THE LEGAL SYSTEM OF UNITS OF MEASURES, AS WELL AS THE GENERAL PRINCIPLES AND NORMS TO WHICH THE ORGANIZATION AND THE LEGAL REGIME OF THE METROLOGICAL ACTIVITY IN SPAIN WILL HAVE TO ADJUST, ARE CURRENTLY ESTABLISHED BY THE ACT 3/1985, OF 18 MARCH, OF METROLOGY, ONE OF WHOSE KEY PIECES HAS BEEN THE ESTABLISHMENT OF A METROLOGICAL CONTROL BY THE STATE, TO WHICH THEY MUST SUBMIT, IN DEFENSE OF THE SAFETY, THE PROTECTION OF THE HEALTH AND THE INTERESTS CONSUMERS 'AND USERS' ECONOMIC OPERATORS ALL INSTRUMENTS, APPARATUS, MEANS AND SYSTEMS OF MEASUREMENT WHICH THEY SERVE TO WEIGH, MEASURE OR COUNT, AND WHICH HAS BEEN DEVELOPED BY ROYAL DECREE 1616/1985, OF SEPTEMBER 11.

PRODUCED THE ACCESSION OF SPAIN TO THE EUROPEAN COMMUNITIES BY ROYAL LEGISLATIVE DECREE 1296/1986, OF 28 JUNE, THE LAW OF METROLOGY IS AMENDED TO ADD TO THE COMMUNITY DERIVED RIGHT, ESTABLISHING, IN ADDITION TO THE CONTROL OF THE STATE, A SPECIAL METROLOGICAL CONTROL, WITH EFFECT WITHIN THE EUROPEAN ECONOMIC COMMUNITY, KNOWN AS EEC METROLOGICAL CONTROL, WHICH SHALL BE APPLICABLE, IF THE CONTROL EQUIPMENT AT THE DISPOSAL OF THE STATE SO PERMITS, TO MEASURING INSTRUMENTS AND TO THE METHODS OF METROLOGICAL CONTROL REGULATED BY A SPECIFIC COMMUNITY DIRECTIVE EUROPEAN ECONOMIC, AND WHICH HAS BEEN REGULATED BY ROYAL DECREE 597/1988 OF 10 JUNE.

AMONG THE COMMUNITY RULES FOR MEASURING INSTRUMENTS AND METHODS OF METROLOGICAL CONTROL IS DIRECTIVE 77 /313/EEC OF 5 APRIL 1977 AS AMENDED BY 82 /625/EEC OF 1 JULY 1982 ON THE APPROXIMATION OF THE LAWS OF THE MEMBER STATES APPROXIMATION OF THE LAWS OF THE MEMBER STATES RELATING TO SYSTEMS OF MEASUREMENT OF LIQUIDS OTHER THAN WATER.

THIS ORDER HAS NO OTHER OBJECT THAN TO INCORPORATE THE DIRECTIVE MENTIONED IN SPANISH DOMESTIC LAW, AND IT IS ISSUED IN USE OF THE AUTHORIZATION GRANTED TO THE MINISTRY OF PUBLIC WORKS AND URBANISM BY THE FINAL DISPOSITION OF THE ROYAL DECREE 597/1988 OF 10 JUNE 1988 REGULATING EEC METROLOGICAL CONTROL.

IN HIS VIRTUE, I HAVE:

FIRST.

THE MEASUREMENT SYSTEMS FOR LIQUIDS OTHER THAN WATER DESCRIBED IN THE ANNEX TO THIS ORDER SHALL BE SUBJECT TO THE METROLOGICAL CONTROL OF MODEL APPROVAL AND OF PRIMITIVE VERIFICATION, WHICH SHALL BE CARRIED OUT IN ACCORDANCE WITH THE PROVISIONS OF THIS ANNEX. PROVISIONS OF ROYAL DECREE 597/1988 OF 10 JUNE 1988 REGULATING THE EEC METROLOGICAL CONTRO OR, IN ITS CASE, IN ACCORDANCE WITH THE PROVISIONS OF ROYAL DECREE 1616/1985 OF 11 SEPTEMBER 1985 ESTABLISHING THE METROLOGICAL CONTROL WHICH PERFORMS THE ADMINISTRATION OF THE STATE.

SECOND. THE METROLOGICAL CONTROL REFERRED TO IN THE PREVIOUS PARAGRAPH SHALL BE CARRIED OUT BY THE SPANISH METROLOGY CENTRE OF THE MINISTRY OF PUBLIC WORKS AND TOWN PLANNING, IN ACCORDANCE WITH THE TECHNICAL SPECIFICATIONS SET OUT IN THAT ANNEX.

FINAL DISPOSITION

THIS ORDER WILL ENTER INTO FORCE THE DAY NEXT TO YOUR POST IN THE .

MADRID, DECEMBER 28, 1988.

COCULLUELA SAENZ

ILMOS. SRES. DEPUTY SECRETARY OF PUBLIC WORKS AND URBAN PLANNING AND DIRECTOR GENERAL OF THE NATIONAL GEOGRAPHIC INSTITUTE.

ANNEX

THIS PROVISION SHALL APPLY TO SYSTEMS OF MEASUREMENT OF LIQUIDS OTHER THAN WATER, EQUIPPED WITH VOLUMETRIC METERS IN WHICH THE LIQUID CAUSES THE MOVEMENT OF THE MOVABLE WALLS OF MEASURING CHAMBERS.

1.

GENERAL PRESCRIPTIONS REGARDING MEASUREMENT SYSTEMS

1.1 DEFINITIONS:

1.1.1 MEDIDA SYSTEM. A SYSTEM OF MEASUREMENT OF LIQUIDS OTHER THAN WATER SHALL BE CONSTITUTED, BY THE COUNTER ITSELF AND THE COMPLEMENTARY DEVICES IT CAN CARRY ASSOCIATED WITH IT, WHICH MUST CONFORM TO THE ORDER REGULATING THE VOLUMETRIC METERS OF LIQUIDS OTHER THAN WATER AND THEIR COMPLEMENTARY DEVICES, AS WELL AS ALL THE DEVICES NECESSARY TO ENSURE A CORRECT MEASUREMENT OR TO FACILITATE OPERATIONS, AND ALL OTHER DEVICES WHICH MAY IN SOME WAY INFLUENCE THE ACTION.

WHEN SEVERAL COUNTERS FOR DIFFERENT MEASUREMENT OPERATIONS WORK IN CONNECTION WITH COMMON ELEMENTS, EACH COUNTER SHALL BE CONSIDERED TO FORM, WITH THE COMMON ELEMENTS, A MEASUREMENT SYSTEM.

WHEN MULTIPLE COUNTERS ARE INTENDED FOR THE SAME MEASUREMENT OPERATION, THESE COUNTERS ARE CONSIDERED TO BE INCLUDED IN THE SAME MEASUREMENT SYSTEM.

1.1.2 MINIMUM DELIVERY. THE MINIMUM SUPPLY OF A SYSTEM OF MEASUREMENT SHALL BE DETERMINED IN ACCORDANCE WITH THE PROVISIONS LAID DOWN IN THE ORDER GOVERNING THE COUNTERS OF LIQUIDS OTHER THAN WATER AND THEIR COMPLEMENTARY DEVICES, TAKING INTO ACCOUNT THE REQUIREMENTS OF THE PRESENT ANNEX

IN MEASUREMENT SYSTEMS INTENDED FOR LIQUID RECEPTION OPERATIONS, THE MINIMUM VOLUME OF LIQUID TO WHICH THE MEASURE IS AUTHORISED IS REFERRED TO AS MINIMUM RECEPTION. THE PRECEDING PROVISION CONCERNING THE MINIMUM SUPPLY SHALL APPLY, BY ANALOGY, TO THE MINIMUM RECEPTION.

1.1.3 GAS SEPARATOR. A GAS SEPARATOR IS AN APPARATUS INTENDED TO SEPARATE PERMANENTLY AND TO EVACUATE, BY MEANS OF AN APPROPRIATE DEVICE, THE AIR OR GASES WHICH MAY BE CONTAINED IN THE LIQUID.

THE EXHAUST SYSTEM OF GASES SHALL IN PRINCIPLE BE AUTOMATIC. HOWEVER, THIS CONDITION SHALL NOT BE REQUIRED IF THERE IS A DEVICE WHICH AUTOMATICALLY STOPS THE FLOW OF THE LIQUID WHEN THERE IS A RISK THAT AIR OR GASES MAY ENTER THE COUNTER. IN SUCH A CASE, THE MEASURE SHOULD ONLY BE ABLE TO RESUME AFTER THE AIR OR GASES ARE REMOVED, AUTOMATICALLY OR MANUALLY.

1.1.4 GAS EXTRACTOR. A GAS EXTRACTOR IS AN APPARATUS INTENDED TO EVACUATE AIR OR GASES THAT ACCUMULATE IN THE METER ' S FEEDING PIPES IN THE FORM OF BAGS SLIGHTLY MIXED WITH THE LIQUID.

1.1.2 MINIMUM DELIVERY. THE MINIMUM SUPPLY OF A SYSTEM OF MEASUREMENT SHALL BE DETERMINED IN ACCORDANCE WITH THE PROVISIONS LAID DOWN IN THE ORDER GOVERNING THE COUNTERS OF LIQUIDS OTHER THAN WATER AND THEIR COMPLEMENTARY DISISOTIVES, TAKING INTO ACCOUNT THE REQUIREMENTS OF THE PRESENT ANNEX

IN MEASUREMENT SYSTEMS INTENDED FOR LIQUID RECEPTION OPERATIONS, THE MINIMUM VOLUME OF LIQUID TO WHICH THE MEASURE IS AUTHORISED IS REFERRED TO AS A MINIMUM RECEPTION.

THE PRECEDING PROVISION RELATING TO THE MINIMUM SUPPLY SHALL APPLY, BY ANALOGY, TO THE MINIMUM RECEPTION.

1.1.3 GAS SEPARATOR. A GAS SEPARATOR IS AN APPARATUS INTENDED TO SEPARATE PERMANENTLY AND TO EVACUATE, BY MEANS OF AN APPROPRIATE DEVICE, THE AIR OR GASES WHICH MAY BE CONTAINED IN THE LIQUID.

THE EXHAUST SYSTEM OF GASES SHALL IN PRINCIPLE BE AUTOMATIC. HOWEVER, THIS CONDITION SHALL NOT BE REQUIRED IF THERE IS A DEVICE WHICH AUTOMATICALLY STOPS THE FLOW OF THE LIQUID WHEN THERE IS A RISK THAT AIR OR GASES MAY ENTER THE COUNTER. IN SUCH A CASE, THE MEASURE SHOULD ONLY BE ABLE TO RESUME AFTER THE AIR OR GASES ARE REMOVED, AUTOMATICALLY OR MANUALLY.

1.1.4 GAS EXTRACTOR. A GAS EXTRACTOR IS AN APPARATUS INTENDED TO EVACUATE AIR OR GASES THAT ACCUMULATE IN THE METER ' S FEEDING PIPES IN THE FORM OF BAGS SLIGHTLY MIXED WITH THE LIQUID.

THE PRECEDING REQUIREMENTS CONCERNING THE GAS SEPARATOR GAS EVACUATION DEVICE SHALL ALSO APPLY TO THE GAS EXTRACTOR.

1.1.5 GAS SPECIAL EXTRACTOR.

A SPECIAL GAS EXTRACTOR IS AN APPARATUS THAT, ON THE ONE HAND, LIKE THE GAS SEPARATOR, BUT UNDER LESS SEVERE OPERATING CONDITIONS, PERMANENTLY SEPARATES THE AIR OR GASES THAT MAY EVENTUALLY CONTAIN THE GAS. LIQUID, AND WHICH, ON THE OTHER HAND, AUTOMATICALLY STOPS THE FLOW OF LIQUID WHEN THERE IS A RISK THAT THE AIR OR GASES ACCUMULATED IN THE FORM OF BAGS SLIGHTLY MIXED WITH THE LIQUID WILL PENETRATE THE COUNTER.

1.1.6 CONDENSER CUBA. A CONDENSER CUBA IS A CLOSED CONTAINER INTENDED, IN THE MEASUREMENT SYSTEMS OF LIQUEFIED GAS PRESSURE, TO COLLECT THE GASES CONTAINED IN THE LIQUID TO BE MEASURED AND TO CONDENSE THEM BEFORE THE MEASUREMENT.

1.1.7 GAS INDICATOR. A GAS INDICATOR IS A DEVICE THAT ALLOWS TO EASILY DISTINGUISH AIR AND GAS BUBBLES THAT MAY BE PRESENT IN THE FLOW OF LIQUID.

1.1.8 VISIT. A VIEWFINDER IS A DEVICE THAT ALLOWS YOU TO EASILY VERIFY WHETHER THE SYSTEM OR PART OF THE MEASUREMENT SYSTEM IS FULLY LIQUID.

1.2 APPLICATION FIELD: THE GENERAL REQUIREMENTS OF POINT 1 SHALL APPLY TO ALL TYPES OF MEASUREMENT SYSTEMS, PROVIDED THAT NO DIFFERENT RULES ARE LAID DOWN IN THE PARTICULAR REQUIREMENTS OF PARAGRAPH 2.

1.3 METERS, LIMITS: THE COUNTERS FORMING PART OF A MEASUREMENT SYSTEM, INCLUDING ANY COMPLEMENTARY DEVICES, MUST BE OF AN APPROVED MODEL FOR THE MEASUREMENT OF THE LIQUID CONSIDERED, IN THE NORMAL OPERATING CONDITIONS.

SUCH COUNTERS SHALL BE THE SUBJECT OF A MODEL APPROVAL OR, WHERE APPROPRIATE, APPROVAL OF A SEPARATE EEC MODEL OR A APPROVAL INCLUDED IN THE MODEL APPROVAL OR, WHERE APPROPRIATE, APPROVAL OF THE EEC MODEL OF THE MEASUREMENT SYSTEM. FORMER PART. THE LIMITS OF A MEASUREMENT SYSTEM (MAXIMUM FLOW RATE AND MINIMUM FLOW RATE) MAY BE DIFFERENT FROM THOSE OF THE METER WITH WHICH IT IS EQUIPPED. IN THIS CASE, IT IS APPROPRIATE TO VERIFY THAT THE LIMITS OF THE MEASUREMENT SYSTEM ARE COMPATIBLE WITH THOSE OF THE COUNTER. IN ANY CASE, EVEN IF THE COUNTER IS THE SUBJECT OF AN APPROVAL AS AN ELEMENT INCLUDED IN A MEASUREMENT SYSTEM, IT MUST COMPLY WITH THE REQUIREMENTS CONTAINED IN THE ORDER GOVERNING THE COUNTERS OF LIQUIDS OTHER THAN WATER AND THEIR DEVICES SUPPLEMENTARY.

WHEN SEVERAL COUNTERS ARE INSTALLED IN PARALLEL WITHIN THE SAME SYSTEM, ACCOUNT MUST BE TAKEN, AT THE TIME OF THE DETERMINATION OF THE LIMITS OF THE MEASUREMENT SYSTEM, OF THE SUM OF THE LIMITS OF THE LIMITS. DIFFERENT COUNTERS, WITH THE EXCEPTION OF THE PARTICULAR CASES PROVIDED FOR IN THIS ANNEX. THE MAXIMUM FLOW RATE OF THE MEASUREMENT SYSTEM SHALL BE EQUAL TO OR GREATER THAN DOUBLE THE MINIMUM FLOW OF THE METER OR DOUBLE THE SUM OF THE MINIMUM FLOW RATES OF THE METERS WITH WHICH IT IS EQUIPPED.

1.4 TRANSFER POINT:

1.4.1 MEASUREMENT SYSTEMS MUST CARRY A LIQUID DELIMITATION POINT SUPPLIED OR RECEIVED, CALLED A TRANSFER POINT.

THIS TRANSFER POINT SHALL BE PLACED AFTER THE COUNTER ON THE DELIVERY SYSTEMS AND BEFORE THE COUNTER ON THE RECEIVING SYSTEMS.

1.4.2 MEASUREMENT SYSTEMS CAN BE OF TWO TYPES: THOSE OPERATING UNDER AND THOSE OPERATING UNDER , BEING ABLE TO INCLUDE IN THE TERM RIGID PIPES.

1.4.2.1 SYSTEMS OPERATING UNDER ARE, IN THE CASE OF SUPPLY DEVICES, MEASUREMENT SYSTEMS WHOSE TRANSFER POINT IS LOCATED BEFORE A DISTRIBUTION HOSE. THIS TRANSFER POINT SHALL BE EITHER AN OVERFLOW LEVEL INDICATOR WITH A VIEWFINDER, OR A CLOSING DEVICE, COMBINED IN BOTH CASES WITH A SYSTEM BY WHICH THE DISTRIBUTION HOSE IS EMPTIED AFTER EACH OPERATION. ACTION.

1.4.2.2 MEASUREMENT SYSTEMS OPERATING UNDER ARE, IN THE CASE OF SUPPLY DEVICES, MEASUREMENT SYSTEMS WHOSE TRANSFER POINT IS CONSTITUTED BY A LOCKING MECHANISM LOCATED IN THE SUPPLY. WHEN THE SUPPLY PIPE HAS A FREE END, THE CLOSING MECHANISM SHALL BE AS CLOSE AS POSSIBLE TO THAT END.

1.4.2.3 IN THE CASE OF RECEPTION APPARATUS, THE SAME PROVISIONS SHALL APPLY BY ANALOGY TO THE RECEPTION PIPES LOCATED BEFORE THE COUNTER.

1.5 FILTERS: THE MEASURING SYSTEMS MUST CARRY, BEFORE THE COUNTER, A DEVICE INTENDED TO REMOVE SOLID IMPURITIES FROM LIQUIDS (FILTER). THE FILTERS MUST BE POSITIONED, AS FAR AS POSSIBLE, SO THAT THEY CAN BE EASILY ACCESSIBLE.

1.6 REMOVAL OF AIR OR GASES:

1.6.1 GENERAL OPTION. THE MEASUREMENT SYSTEMS SHALL BE INSTALLED IN SUCH A WAY AS NOT TO PRODUCE, UNDER NORMAL OPERATING CONDITIONS, OR AIR INTAKE, OR GAS FORMATION IN THE LIQUID BEFORE THE METER. WHERE THERE IS A RISK THAT THIS CONDITION WILL NOT BE MET, THE MEASUREMENT SYSTEMS SHALL INCLUDE GAS REMOVAL DEVICES THAT ALLOW THE CORRECT REMOVAL OF AIR AND GASES THAT MAY BE CONTAINED IN THE LIQUID. BEFORE YOUR PASSAGE THROUGH THE COUNTER.

THE GAS DISPOSAL DEVICES MUST BE ADAPTED TO THE FEEDING CONDITIONS AND ARRANGED IN SUCH A WAY THAT THE ADDITIONAL ERROR DUE TO THE INFLUENCE OF THE AIR OR GASES ON THE RESULTS OF THE MEASURE DOES NOT EXCEEDS:

0.5 PER 100 OF THE MEASURED QUANTITY FOR LIQUIDS OTHER THAN FOOD LIQUIDS WHOSE VISCOSITY IS EQUAL TO OR LESS THAN 1 MP.S.

1 PER 100 OF THE MEASURED QUANTITY FOR FOOD LIQUIDS AND FOR THOSE WHOSE VISCOSITY IS GREATER THAN 1 MP.S.

HOWEVER, IT SHALL NOT BE NECESSARY FOR THIS ERROR TO BE LESS THAN 1 PER 100 OF THE MINIMUM SUPPLY.

1.6.2 PUMP POWER:

1.6.2.1 WITHOUT PREJUDICE TO THE PROVISIONS OF PARAGRAPH 1.6.6, WHERE THE PRESSURE AT THE PUMP INLET MAY, EVEN MOMENTARILY, BE LOWER THAN THE ATMOSPHERIC PRESSURE, OR AT THE PRESSURE OF VAPOUR SATURATION OF THE LIQUID, REQUIRED TO HAVE A GAS SEPARATOR.

1.6.2.1.1 A GAS SEPARATOR DESIGNED TO OPERATE AT A MAXIMUM FLOW RATE NOT EXCEEDING 100 M /H MAY BE THE SUBJECT OF A MODEL APPROVAL OR, IF CASE, OF A SEPARATE EEC MODEL APPROVAL OR OF AN APPROVAL INCLUDED IN THE MODEL ' S APPROVAL OR, WHERE APPROPRIATE, APPROVAL OF THE EEC MODEL OF THE MEASURE TO WHICH IT FORMS PART, PROVIDED THAT APPROVAL OF THAT SYSTEM IS PROVIDED FOR IN THIS ANNEX. HOWEVER, AS REGARDS GAS SEPARATORS DESIGNED TO OPERATE AT A MAXIMUM FLOW RATE EXCEEDING 100 M /H, THE MODEL APPROVALS OR, WHERE APPLICABLE, THE EEC MODEL APPROVALS MAY BE GRANTED BY ANALOGY WITH AN APPROVED MODEL OF THE SAME DESIGN AND OF LOWER DIMENSIONS. GAS SEPARATORS WHICH HAVE BEEN THE SUBJECT OF AN APPROVAL OR, WHERE APPROPRIATE, APPROVAL OF A SEPARATE EEC MODEL, MAY BE USED IN MEASUREMENT SYSTEMS WITHOUT A GAS INDICATOR.

1.6.2.1.2 THE GAS SEPARATOR WILL BE INSTALLED IN PRINCIPLE IN THE PUMP DISCHARGE PIPE. HOWEVER, IT MAY BE COMBINED WITH THE PUMP IN SOME CASES.

IN ANY CASE, SHOULD BE PLACED AS CLOSE AS POSSIBLE TO THE COUNTER, SO THAT THE LOSS OF LOAD, DUE TO THE FLOW OF THE LIQUID BETWEEN THESE TWO DEVICES, IS NEGLIGIBLE.

1.6.2.1.3 THE OPERATING LIMITS OF A GAS SEPARATOR WILL BE AS FOLLOWS:

A) THE MAXIMUM FLOW OR FLOW RATES FOR ONE OR MORE DETERMINED LIQUIDS.

B) THE MAXIMUM AND MINIMUM PRESSURE LIMITS COMPATIBLE WITH THE CORRECT OPERATION OF THE GAS REMOVAL DEVICE.

1.6.2.1.4 WHEN A GAS SEPARATOR DESIGNED TO OPERATE AT A MAXIMUM RATE OF NOT MORE THAN 100 M /H IS THE SUBJECT OF A MODEL APPROVAL OR, WHERE APPROPRIATE, A SEPARATE EEC MODEL APPROVAL, IT SHALL BE ENSURED WITHIN THE ERROR LIMITS SET OUT IN POINT 1.6.1, THE REMOVAL OF AIR OR GASES MIXED WITH THE LIQUID TO BE MEASURED UNDER THE FOLLOWING TEST CONDITIONS:

A) THE MEASUREMENT SYSTEM SHALL OPERATE IN THE MAXIMUM FLOW RATE AND THE MINIMUM PRESSURE PROVIDED FOR THE GAS SEPARATOR;

B) THE PROPORTION BY VOLUME OF AIR OR GASES IN RELATION TO THE LIQUID MAY BE ANY IF THE GAS SEPARATOR IS DESIGNED FOR A MAXIMUM FLOW RATE OF NOT MORE THAN 20 M /H; IT SHALL BE LIMITED TO 30 PER 100 IF THE GAS SEPARATOR IT IS DESIGNED FOR A MAXIMUM FLOW OF MORE THAN 20 M /H (FOR THE ASSESSMENT OF THE PERCENTAGE OF AIR OR GASES, THESE SHALL BE MEASURED AT ATMOSPHERIC PRESSURE).

IN ADDITION, THE AUTOMATIC GAS EVACUATION DEVICE SHALL FUNCTION CORRECTLY EVEN AT THE MAXIMUM PRESSURE FIXED FOR THESE GAS SEPARATORS.

1.6.2.1.5 WHEN A GAS SEPARATOR IS THE SUBJECT OF AN APPROVAL AS AN ELEMENT IN AN APPROVED MEASURE SYSTEM, YOU MAY BE ABLE TO APPLY IT 1.6.2.1.4. IN THIS CASE, THE GAS INDICATOR SHALL NOT BE REQUIRED.

WHEN THE MEASURING SYSTEM HAS A GAS INDICATOR IN ACCORDANCE WITH THE DEFINITION IN PARAGRAPH 1.1.7, THE GAS SEPARATOR SHALL ENSURE, WITHIN THE LIMITS OF THE ERROR SPECIFIED IN PARAGRAPH 1.6.1, THE REMOVAL OF THE AIR. OR OF THE GASES MIXED WITH THE LIQUID TO BE MEASURED UNDER THE FOLLOWING CONDITIONS:

(A) THE MEASUREMENT SYSTEM SHALL OPERATE IN THE MAXIMUM FLOW RATE AND AT THE MINIMUM EXPECTED PRESSURE FOR THE MEASUREMENT SYSTEM.

B) THE VOLUME OF AIR OR GASES IN RELATION TO THE LIQUID SHALL NOT EXCEED:

20 PER 100 FOR LIQUIDS OTHER THAN FOOD LIQUIDS AND THE VISCOSITY OF WHICH DOES NOT EXCEED 1 MP.S,

10 PER 100 FOR FOOD LIQUIDS AND FOR OTHER LIQUIDS WITH A VISCOSITY GREATER THAN 1 MP.S (1).

(1) EXPERIENCE SHOWS THAT THE CONDITIONS REFERRED TO IN POINTS (A) AND (B) ARE GENERALLY MET IF A CORRECTLY CONSTRUCTED SEPARATOR IS USED, AND IF ITS USEFUL VOLUME IS EQUAL TO OR GREATER THAN 8 PER 100 OF THE VOLUME SUPPLIED IN ONE MINUTE TO THE MAXIMUM FLOW RATE INDICATED ON THE MEASUREMENT SYSTEM BOARD.

WHEN THE PROPORTION BY VOLUME OF AIR OR GASES IN RELATION TO THE LIQUID IS HIGHER THAN THE ABOVE PERCENTAGES AND WHEN THE GAS SEPARATOR DOES NOT MEET THE REQUIREMENTS FOR MAXIMUM TOLERATED ERRORS, THE GAS INDICATOR SHALL CLEARLY SHOW AIR OR GAS BUBBLES.

1.6.2.2 WHEN THE PRESSURE, AT THE INLET OF THE PUMP, IS ALWAYS HIGHER THAN THE ATMOSPHERIC PRESSURE AND THE VAPOUR PRESSURE OF THE LIQUID SATURATION AND THERE IS NO GAS SEPARATOR, A GAS EXTRACTOR OR AN EXTRACTOR SHALL BE REQUIRED. GAS SPECIAL TO PREVENT THE FORMATION OF GASES BETWEEN THE PUMP AND THE COUNTER DURING PERIODS WHEN THE APPARATUS IS NOT WORKING OR TO AVOID AIR BAGS THAT CAN BE INSERTED INTO THE PIPE (WHEN THE SUPPLY TANK IS COMPLETELY EMPTY, FOR EXAMPLE) SO THAT THEY CAN PRODUCE A SPECIFIC ERROR IN THE MEASURE ABOVE 1 PER 100 OF THE MINIMUM DELIVERY.

1.6.2.2.1 THE GAS EXTRACTOR AND THE SPECIAL GAS EXTRACTOR DESIGNED TO OPERATE AT A MAXIMUM RATE NOT EXCEEDING 100 M /H MAY BE THE SUBJECT OF A MODEL APPROVAL OR, WHERE APPROPRIATE, APPROVAL OF EEC MODEL SEPARATE EITHER OF AN APPROVAL INCLUDED IN THE APPROVAL OF A MODEL OR, WHERE APPROPRIATE, APPROVAL OF THE EEC MODEL OF THE MEASURE OF WHICH THEY ARE A PARTY, PROVIDED THAT THE APPROVAL OF THAT SYSTEM IS PROVIDED FOR IN THIS ANNEX.

HOWEVER, AS REGARDS GAS EXTRACTORS DESIGNED TO OPERATE AT A MAXIMUM FLOW RATE OF MORE THAN 100 M /H, MODEL APPROVALS OR EEC MODEL APPROVALS MAY BE GRANTED BY ANALOGY WITH A APPROVED MODEL OF THE SAME DESIGN AND OF LOWER DIMENSIONS.

GAS EXTRACTORS AND SPECIAL GAS EXTRACTORS WHICH HAVE BEEN THE SUBJECT OF A MODEL APPROVAL OR, WHERE APPROPRIATE, APPROVAL OF A SEPARATE EEC MODEL, MAY BE USED IN MEASUREMENT SYSTEMS WITHOUT GAS INDICATOR.

1.6.2.2.2 THE GAS EXTRACTOR OR THE GAS SPECIAL EXTRACT SHALL BE INSTALLED IN PRINCIPLE IN THE PUMP DISCHARGE PIPE. HOWEVER, IT MAY ALSO BE COMBINED WITH THE PUMP.

IN THE TWO CASES, IT WILL NORMALLY BE PLACED AT THE HIGHEST POINT IN THE PIPELINE, AS CLOSE TO THE COUNTER AS POSSIBLE. IF IT IS INSTALLED AT A LOWER LEVEL THAN THAT OF THE COUNTER, AN ANTI-RETURN DEVICE MUST BE USED, PROVIDED, IF NECESSARY, WITH A PRESSURE LIMITER TO PREVENT THE PIPE LINKING THESE TWO ORGANS FROM EMPTYING.

IF THE COUNTER POWER LINE HAS SEVERAL HIGH POINTS, SEVERAL GAS EXTRACTORS MAY BE REQUIRED.

1.6.2.2.3 THE OPERATING LIMITS OF A GAS EXTRACTOR OR A SPECIAL GAS EXTRACTOR SHALL BE THE SAME AS THOSE DEFINED FOR GAS SEPARATORS IN POINT 1.6.2.1.3, INCLUDING MINIMUM SUPPLIES FOR WHICH THESE DEVICES ARE DESIGNED.

1.6.2.2.4 A GAS EXTRACTOR OR A SPECIAL GAS EXTRACTOR SHALL ENSURE IN THE MAXIMUM FLOW RATE OF THE MEASUREMENT SYSTEM, THE REMOVAL OF AN AIR OR GAS BAG, MEASURED AT ATMOSPHERIC PRESSURE, OF A VOLUME AT LEAST EQUAL TO THE MINIMUM SUPPLY WITHOUT AN ADDITIONAL ERROR EXCEEDING 1 PER 100 OF THE MINIMUM SUPPLY. IN ADDITION, A SPECIAL GAS EXTRACTOR MUST BE ABLE TO PERMANENTLY SEPARATE AN AIR OR GAS VOLUME EQUAL TO 5 PER 100 FROM THE VOLUME OF LIQUID SUPPLIED IN MAXIMUM FLOW RATE, WITHOUT THE ADDITIONAL ERROR EXCEEDING THE LIMITS AS SET OUT IN POINT 1.6.1.

1.6.2.3 POINTS 1.6.2.1 AND 1.6.2.2 WILL NOT BE AN OBSTACLE TO THE USE OF MANUAL OR AUTOMATIC EXTRACTION DEVICES IN THE CASE OF LARGE FIXED INSTALLATIONS.

1.6.2.4 WHEN THE FEEDING DEVICE IS ARRANGED SO THAT, WHATEVER THE CONDITIONS OF USE, NO GASEOUS FORMATIONS MAY BE PRODUCED OR PENETRATED IN THE INLET PIPE DURING THE NO GAS DISPOSAL DEVICE SHALL BE REQUIRED, PROVIDED THAT THE GASEOUS FORMATIONS WHICH MAY OCCUR DURING PERIODS OF TIME WHICH THE APPARATUS DOES NOT FUNCTION DO NOT CAUSE A SPECIFIC ERROR OF MORE THAN 1 PER 100 OF THE MINIMUM DELIVERY.

1.6.3 PUMP-LESS POWER:

1.6.3.1 WHEN A COUNTER IS POWERED BY FORCE OF GRAVITY EFFECT, WITHOUT THE AID OF A PUMP, IF THE PRESSURE OF THE LIQUID ON ALL PARTS OF THE PIPE WHICH IS LOCATED BEFORE THE COUNTER AND IN THE SAME COUNTER, IT IS SUPERIOR TO THE PRESSURE OF SATURATION VAPOR AND ATMOSPHERIC PRESSURE, IT WILL NOT BE NECESSARY TO HAVE A DEVICE FOR THE ELIMINATION OF GASES. HOWEVER, DEVICES SHOULD BE PROVIDED WHICH, ONCE THE SYSTEM IS IN SERVICE, MAINTAIN THE SYSTEM OF MEASUREMENT CORRECTLY FILLED.

1.6.3.2 WHERE THERE IS A RISK THAT SUCH PRESSURE MAY BE LOWER THAN THE ATMOSPHERIC PRESSURE, REMAINING HIGHER THAN THE SATURATION VAPOUR PRESSURE, THE INTRODUCTION OF AIR INTO THE COUNTER MUST BE PREVENTED BY MEANS OF A DEVICE. APPROPRIATE.

1.6.3.3 WHEN A COUNTER IS FED BY THE EFFECT OF THE PRESSURE OF A GAS, THE GAS INLET SHALL BE PREVENTED FROM ENTERING THE COUNTER BY AN APPROPRIATE DEVICE.

1.6.3.4 IN ANY CIRCUMSTANCE, THE PRESSURE OF THE LIQUID BETWEEN THE COUNTER AND THE TRANSFER POINT SHALL BE GREATER THAN THE VAPOUR PRESSURE OF THE LIQUID SATURATION.

1.6.4 EVACUATION OF GASES. THE EXHAUST PIPE OF THE GASES OF A GAS REMOVAL DEVICE SHALL NOT CARRY A MANUAL CONTROL VALVE IF THE CLOSURE OF THIS VALVE ALLOWS THE OPERATION OF THIS DEVICE TO BE CANCELLED. HOWEVER, WHERE A CLOSURE MECHANISM OF THIS TYPE IS NECESSARY FOR SAFETY REASONS, A SEALING DEVICE MUST BE ABLE TO ENSURE THAT IT IS MAINTAINED IN AN OPEN POSITION.

1.6.5 ANTI-SWIRL DEVICE. WHERE THE COMPLETE EMPTYING OF THE FEEDING TANK OF A MEASURING SYSTEM IS PROVIDED, THE EXIT ORIFICE OF THE MEASURING SYSTEM MUST BE EQUIPPED WITH A DEVICE TO PREVENT THE SWIRL, EXCEPT WHERE THE INSTALLATION IS EQUIPPED WITH A GAS TAB.

1.6.6 VISCOUS LIQUIDS. THE EFFICIENCY OF THE GAS SEPARATORS AND THE GAS EXTRACTORS DECREASES AS THE VISCOSITY OF THE LIQUID INCREASES, WHICH MAKES IT POSSIBLE TO GIVE UP ITS INSTALLATION FOR LIQUIDS WHOSE DYNAMIC VISCOSITY IS GREATER THAN 20 MPA.S AT 20 C. THE PUMP MUST TO BE INSTALLED IN SUCH A WAY THAT THE INPUT PRESSURE IS ALWAYS GREATER THAN THE ATMOSPHERIC PRESSURE. WHERE THERE IS A RISK THAT THIS CONDITION MAY NOT ALWAYS BE MET, A DEVICE MUST BE INSTALLED TO AUTOMATICALLY STOP THE FLOW OF THE LIQUID AT THE TIME THE INPUT PRESSURE STARTS TO BE LOWER THAN THE ATMOSPHERIC PRESSURE. THIS PRESSURE MUST BE CONTROLLED BY A PRESSURE GAUGE. THESE CONDITIONS SHALL NOT BE REQUIRED IF IT IS ENSURED THAT AIR IS NOT POSSIBLE TO BE INTRODUCED THROUGH THE GASKETS WHICH ARE LOCATED IN THE AREAS UNDER PRESSURE UNDER PRESSURE.

DURING PERIODS WHEN THE SYSTEM DOES NOT WORK THE PIPELINE MUST BE KEPT FULL OF LIQUID TO THE POINT OF TRANSFER.

1.7 GAS INDICATOR DEVICE:

1.7.1 MEASUREMENT SYSTEMS MAY BE PROVIDED WITH GAS INDICATOR DEVICES. THESE DEVICES MAY BE REQUIRED IN SOME OF THE CASES REFERRED TO IN POINT 2.

1.7.2 THE GAS INDICATOR SHALL BE DESIGNED IN SUCH A WAY AS TO PERMIT A SATISFACTORY INDICATION OF THE PRESENCE OF AIR OR GASES IN THE LIQUID.

1.7.3 THE GAS INDICATOR DEVICE SHALL BE PLACED AFTER THE COUNTER.

1.7.4 ON THE MEASURED SYSTEMS OF , THE GAS INDICATOR DEVICE MAY BE CONSTRUCTED IN SUCH A WAY AS TO RENDER THE FUNCTION OF THE INDICATOR OF OVERFLOW AND TO SERVE SIMULTANEOUSLY AS A POINT OF TRANSFER.

1.7.5 THE GAS INDICATOR DEVICE MAY BE PROVIDED WITH A PURGE SCREW OR ANY OTHER EVACUATION DEVICE WHEN IT IS AT AN ELEVATED POINT IN THE PIPELINE. NO CONDUIT SHALL BE CONNECTED TO SUCH AN EVACUATION DEVICE. THE INCORPORATION INTO THE GAS INDICATOR DEVICE OF DEVICES WHICH ALLOW THE FLOW OF THE LIQUID (E.G. SPIRALS OR WHEELS WITH FINS) TO BE OBSERVED, PROVIDED THAT SUCH DEVICES DO NOT PREVENT THE OBSERVATION OF THE FORMATIONS GASEOUS WHICH MAY EVENTUALLY CONTAIN THE LIQUID.

1.8 FULL FILLING OF THE MEASUREMENT SYSTEM:

1.8.1 THE COUNTER AND THE PIPE BETWEEN THE COUNTER AND THE TRANSFER POINT SHALL BE KEPT AUTOMATICALLY FILLED WITH LIQUIDS DURING THE MEASUREMENT AND DURING THE PERIODS OF NON-OPERATION OF THE SYSTEM.

WHEN THIS CONDITION IS NOT MET, ESPECIALLY IN THE CASE OF FIXED INSTALLATIONS, THE COMPLETE FILLING OF THE MEASUREMENT SYSTEM UP TO THE POINT OF TRANSFER MUST BE CARRIED OUT MANUALLY AND MUST BE CONTROLLABLE DURING THE MEASURE AND DURING PERIODS OF NON-OPERATION. IN ORDER TO ENSURE THE TOTAL EVACUATION OF AIR AND GASES FROM THE MEASURING SYSTEM, EVACUATION DEVICES MUST BE PLACED IN APPROPRIATE PLACES, PROVIDED, IF POSSIBLE, BY SMALL VIEWERS.

1.8.2 AS A GENERAL RULE, THE PIPES BETWEEN THE COUNTER AND THE TRANSFER POINT SHALL NOT PRODUCE, FOR THE PURPOSE OF TEMPERATURE VARIATIONS, ADDITIONAL ERRORS GREATER THAN 1 PER 100 OF THE MINIMUM SUPPLY.

IN POINT 2, THE TECHNICAL CONDITIONS UNDER WHICH THIS PRESCRIPTION MAY BE APPLIED SHALL BE SPECIFIED FOR CERTAIN PARTICULAR CASES.

1.8.3 WHEN NECESSARY, A PRESSURE MAINTENANCE DEVICE SHALL BE PLACED AFTER THE COUNTER TO ENSURE, ON THE GAS REMOVAL DEVICES AND ON THE COUNTER, A PRESSURE WHICH IS ALWAYS GREATER THAN THE PRESSURE ATMOSPHERIC AND THE PRESSURE OF VAPOR SATURATION OF THE LIQUID.

1.8.4 THE MEASUREMENT SYSTEMS IN WHICH THERE IS A POSSIBILITY THAT THE LIQUID CIRCULATES IN THE OPPOSITE DIRECTION TO THE NORMAL FLOW WHEN THE PUMP STOPS, MUST BE FITTED WITH AN EQUIPPED ANTI-RETURN DEVICE, IF NECESSARY, WITH A PRESSURE LIMIT.

1.8.5 ON MEASUREMENT SYSTEMS OPERATING UNDER , THE PIPELINE LOCATED AFTER THE COUNTER AND, WHERE NECESSARY, THE PIPE LOCATED BEFORE THE COUNTER, SHALL BE PROVIDED WITH A HIGH POINT FOR WHICH ALL PARTS OF THE MEASURING SYSTEM ARE CONSTANTLY KEPT FULL. THE EMPTYING OF THE DISTRIBUTION HOSE CONSIDERED IN PARAGRAPH 1.4.2.1 SHALL BE ACHIEVED BY MEANS OF AN OUTLET VALVE TO THE ATMOSPHERE. IN SOME CASES, THIS VALVE MAY BE REPLACED BY SPECIAL DEVICES SUCH AS AN AUXILIARY PUMP OR A COMPRESSED GAS INJECTOR. FOR MEASURING SYSTEMS DESIGNED FOR MINIMUM SUPPLIES OF LESS THAN 10 CUBIC METRES, THESE DEVICES SHALL OPERATE AUTOMATICALLY.

1.8.6 ON MEASUREMENT SYSTEMS OPERATING UNDER , THE FREE END OF THE HOSE MUST CARRY A DEVICE THAT PREVENTS EMPTYING

OF THE HOSE DURING PERIODS WHEN THE SYSTEM DOES NOT WORK. THIS PRESCRIPTION MAY NOT APPLY TO LIQUEFIED GASES.

WHEN A CLOSING MECHANISM IS PLACED AFTER THIS DEVICE, THE BUFFER SPACE MUST BE AS SMALL AS POSSIBLE AND, IN ANY CASE, LESS THAN THE MAXIMUM TOLERATED ERROR FOR THE MINIMUM SUPPLY OF THE SYSTEM. ACTION.

FOR SYSTEMS INTENDED FOR THE MEASUREMENT OF VISCOUS LIQUIDS, THE CONTERA OF THE DISTRIBUTION KEY MUST BE DESIGNED IN SUCH A WAY THAT IT CANNOT RETAIN A QUANTITY OF LIQUID GREATER THAN 0,4 TIMES THE MAXIMUM ERROR TOLERATED FOR THE MINIMUM SUPPLY OF THE MEASUREMENT SYSTEM.

1.8.7 IF THE HOSE IS COMPOSED OF DIFFERENT ELEMENTS, THEY MUST BE CONNECTED EITHER BY MEANS OF A SPECIAL SPLICE THAT KEEPS THE HOSE FULL, EITHER BY MEANS OF A SYSTEM OF SEALED JOINTS OR MADE IN SUCH A WAY. THE ELEMENTS CANNOT BE PRACTICALLY SEPARATED WITHOUT A SPECIAL TOOL OR TOOL.

1.9 VARIATION OF THE INTERNAL VOLUME OF THE HOSE ON THE SYSTEMS OPERATING UNDER .

WITH RESPECT TO HOSES WHICH ARE MOUNTED ON A MEASURING SYSTEM WITH WINDING, THE INCREASE OF THE INTERNAL VOLUME RESULTING FROM THE CHANGE OF POSITION OF THE ROLLED HOSE NOT UNDER PRESSURE TO THE HOSE POSITION UNWOUND SUBJECTED TO THE PRESSURE OF THE PUMP WITHOUT LIQUID PASSAGE, SHALL NOT EXCEED TWICE THE MAXIMUM ERROR TOLERATED FOR THE MINIMUM SUPPLY.

WHEN THE MEASURE SYSTEM DOES NOT HAVE A ROLL, THE INCREASE IN INTERNAL VOLUME SHALL NOT EXCEED THE MAXIMUM ERROR TOLERATED FOR THE MINIMUM SUPPLY.

1.10 BRANCHES:

1.10.1 IN THE MEASUREMENT SYSTEMS INTENDED FOR SUPPLY ONLY FORKS SHALL BE ALLOWED AFTER THE COUNTER, WHEN PLACED IN SUCH A WAY THAT THE DISTRIBUTION OF LIQUID CANNOT BE CARRIED OUT MORE THAN BY A SINGLE POINT OF DISTRIBUTION AT THE SAME TIME. FORKS LOCATED BEFORE THE COUNTER SHALL NOT BE ALLOWED IN THE MEASURING SYSTEMS INTENDED FOR THE RECEPTION OF LIQUID, EXCEPT WHERE THEY ARE ARRANGED IN SUCH A WAY THAT THEY ALLOW ONLY ONE PIPE TO BE ADMITTED AT A TIME.

EXCEPTIONS WILL ONLY BE ALLOWED FOR INSTALLED PROVISIONING SYSTEMS SO THAT THEY CANNOT BE USED BY MULTIPLE USERS AT THE SAME TIME, AND FOR RECEIVE SYSTEMS THAT CANNOT WORK FOR MULTIPLE PROVIDERS AT THE SAME TIME.

1.10.2 ON MEASUREMENT SYSTEMS THAT CAN BE USED IN A WAY THAT CAN OPERATE UNDER OR AND FITTED WITH FLEXIBLE PIPES, AN ANTI-RETURN VALVE MUST BE INCORPORATED, WHEN NECESSARY, IN THE FIXED PIPE WHICH LEADS TO THE FILLED HOSE, IMMEDIATELY AFTER THE SELECTION MECHANISM. ON THE OTHER HAND, THIS MECHANISM MUST BE ARRANGED IN SUCH A WAY THAT IN NO POSITION WILL IT BE POSSIBLE TO MAKE A CONNECTION OF THE DISTRIBUTING HOSE OPERATING UNDER WITH THE PIPELINE LEADING TO THE .

1.11 CONNECTIONS: CONNECTIONS WHICH, IF NECESSARY, ARE INTENDED FOR DERIVATIONS THAT DO NOT PASS THROUGH THE COUNTER, MUST BE CLOSED BY MEANS OF SEALING FLANGES. HOWEVER, WHEN SUCH A DERIVATION IS NECESSARY FOR THE PURPOSES OF OPERATION, IT MUST BE CLOSED EITHER BY MEANS OF A SEALING DISC OR BY MEANS OF A DOUBLE LOCKING DEVICE WITH AN INTERSPERSED CONTROL VALVE. THE CLOSURE MUST BE ENSURED BY MEANS OF A SEAL.

1.12 VALVES AND REGULATORY MECHANISMS:

1.12.1 WHEN THERE IS A RISK THAT THE FEEDING CONDITIONS MAY OVERLOAD THE COUNTER, A FLOW LIMITATION DEVICE MUST BE INTERSPERSED. THIS DEVICE MUST BE PLACED AFTER THE COUNTER WHEN IT CAUSES A LOAD LOSS. IT SHALL BE SEALED.

1.12.2 THE VARIOUS POSITIONS OF THE CONTROL MECHANISMS OF THE PASSING KEYS OF DIFFERENT TRACKS MUST BE EASILY SEEN AND SECURED BY MEANS OF NOTCHES, RETENTION STOPS OR OTHER SAFETY DEVICES. EXCEPTIONS TO THIS REQUIREMENT SHALL BE PERMITTED WHERE THE ADJACENT POSITIONS OF THE CONTROL MECHANISMS ARE AT AN ANGLE OF NOT LESS THAN 90 DEGREES.

1.12.3 RETENTION VALVES AND CLOSING MECHANISMS THAT DO NOT SERVE TO DELIMIT THE MEASURED QUANTITY SHALL, WHERE NECESSARY, CARRY DISCHARGE VALVES IN ORDER TO ELIMINATE ABNORMALLY LOW PRESSURE. HIGH THAT MAY OCCUR IN THE MEASUREMENT SYSTEM.

1.13 PROVISION OF MEASUREMENT SYSTEMS: THE MEASURING SYSTEMS SHALL BE SO INSTALLED THAT THE INDICATOR DEVICE IS PERFECTLY VISIBLE UNDER NORMAL CONDITIONS OF USE. THE INDICATOR DEVICE AND, WHERE THE GAS INDICATOR EXISTS, SHALL, AS FAR AS POSSIBLE, BE ABLE TO BE OBSERVED FROM THE SAME PLACE. THE SEALING DEVICES SHALL BE EASILY ACCESSIBLE, THE PLATES SHALL BE PERFECTLY FIXED AND THE STATUTORY MARKINGS SHALL BE VERY VISIBLE AND INDELIBLE.

1.14 DEVICES THAT FACILITATE CONTROL AT THE PLACE OF INSTALLATION OF THE SYSTEM: THE INSTALLATION SHALL ALLOW THE VERIFICATION REFERRED TO IN POINT 3.2. WHEN NECESSARY, A PIPE SHALL BE INSTALLED TO DRIVE THE MEASURED LIQUID TO A STORAGE TANK. THE INSTALLATION SHALL BE EQUIPPED, WHERE NECESSARY, WITH TEMPERATURE AND PRESSURE TAKES, IN PARTICULAR WHERE THE USE OF THE MEASURING SYSTEM OR ITS VERIFICATION REQUIRES THE KNOWLEDGE OF THESE FACTORS.

1.15 CHARACTERISTICS OF A MEASUREMENT SYSTEM: THE CHARACTERISTICS OF A MEASUREMENT SYSTEM ARE AS FOLLOWS:

MAXIMUM FLOW RATE AND MINIMUM FLOW RATE.

MAXIMUM OPERATING PRESSURE.

WHEN NECESSARY, THE MINIMUM OPERATING PRESSURE.

THE LIQUID OR LIQUIDS TO BE MEASURED AND THE LIMITS OF VISCOSITY, KINEMATIC OR DYNAMIC, WHEN THE SINGLE INDICATION OF THE NATURE OF THE LIQUIDS IS NOT SUFFICIENT TO CHARACTERIZE ITS VISCOSITY.

MINIMUM DELIVERY.

THE TEMPERATURE RANGE IN CASE THE LIQUID CAN BE MEASURED AT A TEMPERATURE BELOW-10 DEGREES C OR ABOVE + 50 DEGREES C.

1.16 INSCRIPTIONS: EACH MEASUREMENT SYSTEM, ELEMENT OR SUBSYSTEM WHICH HAS BEEN THE SUBJECT OF A MODEL APPROVAL, MUST BE MARKED, GROUPED IN A VISIBLE MANNER, EITHER ON THE DIAL OF THE INDICATOR DEVICE OR ON A PLATE SPECIAL DESCRIPTION, THE FOLLOWING INFORMATION:

A) THE SIGN OF THE MODEL APPROVAL.

B) THE MANUFACTURER ' S IDENTIFICATION MARK OR ITS SOCIAL REASON.

C) EVENTUALLY, THE NAME CHOSEN BY THE MANUFACTURER.

D) THE SERIAL NUMBER AND YEAR OF MANUFACTURE.

E) THE CHARACTERISTICS OF THE MEASUREMENT SYSTEM AS DEFINED IN POINT 1.15.

F) ANY OTHER ADDITIONAL INDICATION SPECIFIED IN THE MODEL APPROVAL CERTIFICATE.

IF MULTIPLE COUNTERS WORK ON THE SAME SYSTEM USING COMMON ELEMENTS, THE PRESCRIBED INDICATIONS FOR EACH PART OF THE SYSTEM CAN BE MET ON A SINGLE BOARD.

INDICATIONS THAT ARE ENTERED ON THE DIAL OF THE COUNTER INDICATOR DEVICE WHICH IS PART OF THE MEASUREMENT SYSTEM SHALL NOT BE CONTRADICTED BY THOSE ON THE DESCRIPTIVE PLATE OF THE MEASURING SYSTEM.

WHEN A MEASURING SYSTEM CAN BE TRANSPORTED WITHOUT BEING DISASSEMBLED, THE INSCRIPTIONS PROVIDED FOR EACH ELEMENT MAY ALSO BE ASSEMBLED ON A SINGLE PLATE.

1.17 SEALS: THE SEALS SHALL PREFERABLY BE MADE OF UNSEALED LEAD. HOWEVER, CERTAIN SEALS MADE BY MEANS OF A CLAMP IN THE CASE OF FRAGILE INSTRUMENTS SHALL BE PERMITTED, OR WHERE SUCH SEALS ARE SUFFICIENTLY PROTECTED AGAINST ANY RISK OF ACCIDENTAL BREAKAGE.

IN ANY CASE, THE SEALS MUST BE EASILY ACCESSIBLE.

SEALING DEVICES MUST BE PLACED ON ALL PARTS OF THE SYSTEM OF MEASUREMENT WHICH CANNOT OTHERWISE BE PROTECTED AGAINST MANIPULATIONS CAPABLE OF INFLUENCING THE ACCURACY OF THE MEASUREMENT. HOWEVER, THE SEALING DEVICES SHALL NOT BE REQUIRED ON ALL SUCH CONNECTIONS MADE IN SUCH A WAY THAT THEIR DISASSEMBLY CAN ONLY BE CARRIED OUT WITH THE AID OF A PARTICULAR TOOL OR SPECIAL TOOL.

THE SEALING DEVICES MUST BE CARRIED OUT IN SUCH A WAY AS TO ENABLE THE ORIGINAL VERIFICATION MARK OR, WHERE APPROPRIATE, THE ORIGINAL EEC VERIFICATION MARK, TO BE REGISTERED ON THEM.

THE SEALING PLATE REFERRED TO IN POINT 3.3.2.1 OF ANNEX II TO ROYAL DECREE 597/1988 OF 10 JUNE MUST BE ABLE TO BE SEALED ON A SUPPORT OF THE MEASURING SYSTEM. IT MAY ALSO BE COMBINED WITH THE DESCRIPTION PLATE OF THE MEASURING SYSTEM REFERRED TO IN POINT 1.16.

IN THE CASE OF A MEASUREMENT SYSTEM USED FOR FOOD LIQUIDS, SEALS MUST NOT BE APPLIED IN ORDER TO ALLOW THE DISASSEMBLY NECESSARY FOR THEIR CLEANING.

PARTICULAR PROVISIONS REGARDING DIFFERENT TYPES OF MEASUREMENT SYSTEMS

2.1 MEASUREMENT SYSTEMS FOR THE SUPPLY OF LIQUID FUEL FOR MOTOR VEHICLES (1):

(1) ADDITIONAL PROVISIONS RELATING TO THE MEASURING SYSTEMS THAT ARE EQUIPPED WITH:

FUEL MIXER COUNTERS.

FUEL AND LUBRICANT MIXERS.

ELECTRICAL OR ELECTRONIC COMPLEMENTARY INDICATORS AND DEVICES.

SELF-SERVICE DEVICES.

MEASUREMENT SYSTEMS FOR THE SUPPLY OF LIQUEFIED GASES.

2.1.1 SCHEMES FOR THE PROVISION OF LIQUID FUEL FOR VEHICLES AUTHORISED FOR ROAD TRAFFIC ARE INTENDED TO BE USED.

THE MEASUREMENT SYSTEMS FOR THE SUPPLY OF LIQUID FUELS FOR RECREATIONAL BOATS AND SMALL AIRCRAFT SHALL BE EQUIVALENT TO THE SYSTEMS FOR MEASURING THE SUPPLY OF LIQUID FUEL FOR MOTOR VEHICLES.

MAY HAVE YOUR OWN POWER DEVICE OR BE DESIGNED TO BE INSTALLED IN A CENTRAL POWER SYSTEM.

FOR THESE SYSTEMS, THE RATIO BETWEEN THE MAXIMUM FLOW RATE AND THE MINIMUM FLOW RATE MUST BE EQUAL TO OR GREATER THAN 10.

THE VOLUME INDICATORS THAT HAVE BEEN INCORPORATED INTO THESE SYSTEMS SHALL INDICATE THE VOLUME MEASURED IN LEGAL UNITS OF MEASUREMENT.

2.1.2 WHEN THE MEASURING SYSTEM CARRIES ITS OWN FEEDING DEVICE, A GAS SEPARATOR MUST BE PLACED IMMEDIATELY BEFORE THE ENTRY OF THE COUNTER WHEN THIS IS POSSIBLE.

THE GAS SEPARATOR MUST COMPLY WITH THE REQUIREMENTS OF POINT 1.6.2.1.4, OR THOSE OF POINT 1.6.2.1.5 (2).

(2) IF THE SEPARATOR IS IN ACCORDANCE WITH POINT 1.6.2.1.5, EXPERIENCE SHOWS THAT THE PRESCRIPTION IS GENERALLY MET, PROVIDED THAT THE SEPARATOR ' S USEFUL VOLUME IS AT LEAST EQUAL TO 5 PER 100 OF THE VOLUME SUPPLIED IN A MINUTE TO THE MAXIMUM FLOW RATE INDICATED ON THE COUNTER PLATE.

IN THIS LAST CASE, THE EVACUATION DEVICE REFERRED TO IN PARAGRAPH 1.7.5 SHALL NOT BE AUTHORISED FOR THE GAS INDICATOR.

2.1.3 WHEN THE MEASUREMENT SYSTEM IS INTENDED TO BE INSTALLED IN A CENTRAL FEEDING SYSTEM OR TO BE POWERED REMOTELY, THE GENERAL RULES OF POINT 1.6 SHOULD BE APPLIED TO IT.

2.1.4 THE MEASUREMENT SYSTEMS FOR THE SUPPLY OF LIQUID FUEL IN MOTOR VEHICLES SHALL BE EQUIPPED WITH A DEVICE TO ENABLE THE VOLUME INDICATOR TO BE SET TO ZERO, IN ACCORDANCE WITH POINTS 1.1, 1.2, 1.3 AND 1.5 OF THE ANNEX II OF THE ORDER REGULATING THE VOLUMETRIC METERS OF LIQUIDS OTHER THAN WATER AND THEIR COMPLEMENTARY DEVICES, AS WELL AS A VOLUME TOTALIZER.

WHEN SUCH SYSTEMS CARRY A PRICE INDICATOR IN ADDITION, THEY MUST BE FITTED WITH A SET-TO-ZERO DEVICE.

THE ZERO-START DEVICES OF THE PRICE INDICATOR AND THE VOLUME INDICATOR MUST BE ARRANGED IN SUCH A WAY THAT THE SET-TO-ZERO OF ANY ONE OF THE TWO INDICATORS AUTOMATICALLY CAUSES THE ENTRY TO ZERO OF THE OTRO.

2.1.5 WHEN THE LIQUID FUEL SUPPLY MEASUREMENT SYSTEM FOR VEHICLES HAS ITS OWN POWER SUPPLY SYSTEM, CONTROLLED BY AN ELECTRIC MOTOR, A DEVICE SHALL, AFTER THE ENGINE STOP, PREVENT ANY NEW LIQUID SUPPLY IF THE SETTING HAS NOT BEEN PREVIOUSLY MADE.

IN NO CASE SHOULD BE POSSIBLE TO ZERO WHILE THE SYSTEM IS SUPPLYING LIQUID.

2.1.6 THE ANTI-RETURN DEVICE, CONSIDERED IN POINT 1.8.4, IS BLIGATORY. MUST BE PLACED BETWEEN THE GAS REMOVAL DEVICE AND THE COUNTER. HOWEVER, IT MAY BE PLACED IMMEDIATELY AFTER THE COUNTER, PROVIDED THAT THE GAS REMOVAL DEVICE IS ABOVE THE LEVEL OF THE COUNTER. IN THIS CASE, IT MAY BE COMBINED WITH THE DEVICE REFERRED TO IN POINT 1.8.3. WHEN THE ANTI-RETURN DEVICE IS INSTALLED BETWEEN THE GAS REMOVAL DEVICE AND THE COUNTER, THE LOSS OF LOAD IT CAUSES SHALL BE SMALL ENOUGH TO BE CONSIDERED AS NEGLIGIBLE.

2.1.7 ON SYSTEMS OPERATING UNDER , HOSES SHALL BE EQUIPPED WITH A MANUAL LOCKING DEVICE IN ACCORDANCE WITH THE REQUIREMENTS OF PARAGRAPH 1.8.6. AN AUTOMATIC CLOSING DEVICE IS ALSO SUPPORTED.

ON SYSTEMS OPERATING UNDER , POWERED ONLY BY A HAND PUMP, ONLY THE DEVICE IN POINT 1.8.6 SHALL BE REQUIRED.

2.1.8 MEASURING SYSTEMS HAVING A MAXIMUM FLOW RATE OF 60 LITRES OR LESS MUST HAVE A MINIMUM SUPPLY OF 5 LITRES OR LESS.

2.1.9 WHEN THE COUNTER IS EQUIPPED WITH A BILL PRINTER OR RECEIPTS, THE PRINTING MECHANISM OF THE RECEIPT MUST BE ASSOCIATED WITH THE INDICATOR ' S SET-TO-ZERO DEVICE. AFTER PRINTING, THIS MECHANISM MUST BE ABLE TO CONTROL THE RECEIPT BY COMPARISON WITH THE INDICATED INDICATION.

2.1.10 IN ACCORDANCE WITH POINT 3.2, THE PRIMITIVE VERIFICATION OF THE LIQUID FUEL SUPPLY MEASUREMENT SYSTEMS FOR MOTOR VEHICLES SHALL BE CARRIED OUT IN ONE OR TWO PHASES, DEPENDING ON WHETHER OR NOT THESE EQUIPMENT INCORPORATE THEIR OWN FOOD SYSTEM.

2.2 MEASUREMENT SYSTEMS INSTALLED ON TRUCK-TANKERS FOR ROAD TRANSPORT AND THE SUPPLY OF LOW-VISCOSITY LIQUIDS (VISCOSITY < = MPA.S) AND STORED AT ATMOSPHERIC PRESSURE, WITH THE EXCEPTION OF LIQUIDS FOOD.

2.2.1 THE PROVISIONS OF POINT 2.2 SHALL BE APPLIED TO THE MEASUREMENT SYSTEMS INSTALLED ON A TANKER OR ON MOVABLE TRANSPORT TANKS.

MEASUREMENT SYSTEMS MAY BE INSTALLED ON TANKS WITH ONE OR MORE COMPARTMENTS, EACH OF WHICH MUST BE FITTED WITH AN INDIVIDUAL CLOSURE (MANUAL OR AUTOMATIC).

2.2.2 ACCORDING TO ITS USE, EACH MEASUREMENT SYSTEM MUST BE ASSOCIATED WITH A GIVEN PRODUCT OR A CLASS OF PRODUCTS FOR WHICH THE COUNTER HAS OBTAINED THE APPROVAL OF A MODEL OR, WHERE APPROPRIATE, THE APPROVAL OF THE EEC MODEL.

THE PIPELINE SYSTEM MUST BE DISPOSED OF IN SUCH A WAY AS TO AVOID MIXING OF PRODUCTS WITHIN THE MEASUREMENT SYSTEM.

2.2.3 WHEN TANKS ARE FITTED IN TRAILERS OR SEMI-TRAILERS, THE MEASURING SYSTEMS MAY BE FITTED EITHER IN THE TRACTOR OR IN THE TRAILER OR SEMI-TRAILER.

2.2.4 A MEASUREMENT SYSTEM INSTALLED ON A TRUCK-TANK CAN BE A SYSTEM THAT WORKS UNDER OR , LIKEWISE, IT CAN INCORPORATE AN EMPTY HOSE AND A FULL HOSE, WELL TWO HOSES FILLED WITH DIFFERENT DIMENSIONS ARRANGED SO THAT THEY CAN OPERATE ALTERNATELY.

DURING A MEASUREMENT OPERATION, THE SUPPLY PIPELINE CHANGE MUST BE IMPOSSIBLE.

2.2.5 WHEN THE COUNTER IS EQUIPPED WITH A RECEIPT PRINTER, THE PRINTING MECHANISM OF THE RECEIPT MUST BE ASSOCIATED WITH THE ZERO-SETTING DEVICE OF THE VOLUME INDICATOR.

2.2.6 A MEASUREMENT SYSTEM INSTALLED ON A TRUCK-TANK MAY BE ARRANGED SO THAT IT CAN FUNCTION EITHER BY PUMP OR BY FORCE OF GRAVITY OR BY THE FORCE OF GRAVITY OR BY THE FORCE OF GRAVITY. BOTH, OR BY PRESSURE OF A GAS.

2.2.6.1 MEASUREMENT SYSTEMS THAT ARE POWERED BY PUMP ONLY MAY BE SYSTEMS THAT WORK UNDER OR .

2.2.6.1.1 WHERE THERE IS POSSIBILITY THAT THE CONDITION SPECIFIED IN POINT 1.6.2.4 MAY BE ALLOWED TO BE FULFILLED, THE COUNTER MUST BE PRECEDED BY A GAS REMOVAL DEVICE, SUCH AS A:

A) APPROPRIATE GAS SEPARATOR: THE GAS SEPARATOR SHALL COMPLY WITH THE REQUIREMENTS OF POINT 1.6.2.1.4 OR POINT 1.6.2.1.5 (1).

B) GAS EXTRACTOR.

C) GAS SPECIAL EXTRACTOR.

WHEN THE PRESSURE AT THE COUNTER OUTLET CAN BE LOWER THAN THE ATMOSPHERIC PRESSURE IN THE MEASURING SYSTEM. THE DEVICE SHALL BE EQUIPPED WITH AN AUTOMATIC SYSTEM FOR REDUCING AND STOPPING THE FLOW OF THE LIQUID, IN ORDER TO PREVENT AIR FROM BEING INTRUDATE INTO THE COUNTER.

WHEN THE PRESSURE ON THE COUNTER OUTPUT DOES NOT RUN THE RISK OF BEING LOWER THAN THE ATMOSPHERIC PRESSURE (ESPECIALLY IN THE CASE OF SYSTEMS THAT OPERATE ONLY UNDER ), THE PRESSURE WILL NOT BE REQUIRED. USE OF AUTOMATIC DEVICES TO REDUCE AND STOP THE FLOW OF LIQUID.

2.2.6.1.2 THE SPECIAL GAS EXTRACTION WITH AUTOMATIC STOP DEVICE SHALL BE EQUIPPED WITH A VIEWFINDER IN ACCORDANCE WITH PARAGRAPH 1.1.8.

2.2.6.1.3 TANK COMPARTMENTS MUST BE FITTED WITH AN ANTI-SWIRL DEVICE, EXCEPT WHEN THE MEASURING SYSTEM HAS A GAS SEPARATOR IN ACCORDANCE WITH POINT 1.6.2.1.4.

(1) IF THE SEPARATOR IS IN ACCORDANCE WITH POINT 1.6.2.1.5, EXPERIENCE SHOWS THAT THE PRESCRIPTION IS GENERALLY MET, PROVIDED THAT THE USEFUL VOLUME OF THE GAS SEPARATOR IS AT LEAST EQUAL TO 5 PER 100 OF THE VOLUME SUPPLIED IN ONE MINUTE TO THE MAXIMUM FLOW RATE OF THE MEASUREMENT SYSTEM.

2.2.6.2 MEASUREMENT SYSTEMS THAT OPERATE ONLY BY FORCE OF GRAVITY MUST MEET THE FOLLOWING CONDITIONS:

2.2.6.2.1 INSTALLATIONS MUST BE CARRIED OUT IN SUCH A WAY THAT THE WHOLE OR THE COMPARTMENTS CAN BE MEASURED AT A RATE OF FLOW GREATER THAN OR EQUAL TO THE MINIMUM FLOW RATE OF THE MEASUREMENT SYSTEM.

2.2.6.2.2 IF CONNECTIONS EXIST WITH THE GAS PHASE OF THE CISTERN, APPROPRIATE DEVICES MUST BE INCORPORATED TO PREVENT THE INTRODUCTION OF GASES INTO THE COUNTER.

2.2.6.2.3 TANK COMPARTMENTS SHALL BE EQUIPPED WITH AN ANTI-SWIRL DEVICE, EXCEPT IF THE MEASURING SYSTEM INCORPORATES A GAS SEPARATOR ACCORDING TO PARAGRAPH 1.6.2.1.4.

2.2.6.2.4 POINTS 1.6.3.1, 1.6.3.2 AND 1.6.3.4 WILL BE APPLIED. WHERE THE CONDITIONS SET OUT ABOVE ARE MET, THE USE OF A RECOVERY PUMP LOCATED AFTER THE TRANSFER POINT MAY BE AUTHORISED.

THIS PUMP MUST PREVENT DOWNWARD PRESSURE ON THE COUNTER.

2.2.6.2.5 ON CERTAIN MEASUREMENT SYSTEMS, ESPECIALLY THOSE WHICH ARE FITTED WITH A SPECIAL GAS EXTRACTOR WITH AUTOMATIC STOPPING DEVICE, AND THOSE INCORPORATING, IMMEDIATELY AFTER THE POINT OF TRANSFER, SOME CONDUIT IN PERMANENT DIRECT CONTACT WITH THE ATMOSPHERE, IT WILL NOT BE NECESSARY TO INSTALL A GAS INDICATOR.

ON THE CONTRARY, IN THE MEASUREMENT SYSTEMS WHICH ARE IMMEDIATELY AVAILABLE AFTER THE TRANSFER POINT OF ANY MANUAL CONTACT DEVICE WITH THE ATMOSPHERE, THE GAS INDICATOR SHALL BE MANDATORY, EXCEPT IN THE CASE OF SYSTEMS IN WHICH THE PRESSURE CANNOT BE LOWER THAN THE ATMOSPHERIC PRESSURE.

2.2.6.3 MEASUREMENT SYSTEMS WHICH CAN BE OPERATED BY THE FORCE OF GRAVITY OR BY MEANS OF A PUMP MUST COMPLY WITH THE CONDITIONS OF PARAGRAPHS 2.2.6.1 AND 2.2.6.2.

2.2.6.4 MEASUREMENT SYSTEMS POWERED BY THE PRESSURE OF A GAS MAY BE SYSTEMS OPERATING UNDER OR . INPUT OF GASES IN THE COUNTER (REFERRED TO IN POINT 1.6.3.3) WITH THE COUNTER ITSELF SHALL NOT HAVE ANY STRANGULATION POINT OR ORGAN CAPABLE OF CAUSING A LOAD LOSS CAPABLE OF CAUSING GASEOUS FORMATIONS BY DETACHMENT OF THE DISSOLVED GASES IN THE LIQUID.

THESE SYSTEMS MUST BE EQUIPPED WITH A PRESSURE GAUGE TO INDICATE THE PRESSURE IN THE TANK. THE DIAL OF THIS PRESSURE GAUGE MUST SIGNAL THE SUPPORTED PRESSURE ZONE.

2.3 LIQUID RECEIVING MEASUREMENT SYSTEMS FOR THE DISCHARGE OF TANKERS, TANKERS, AND TANKERS.

2.3.1 MEASUREMENT SYSTEMS INTENDED TO MEASURE VOLUMES OF LIQUID DURING THE DISCHARGE OF TANK-TANKERS, TANK-TANKERS AND TANKER TRUCKS MUST BE FITTED WITH AN INTERMEDIATE DEVICE IN WHICH THE LEVEL OF THE LIQUID DETERMINE THE TRANSFER POINT.

THE INTERMEDIATE DEVICE MAY BE INSTALLED IN SUCH A WAY THAT IT CAN PERFORM THE GAS REMOVAL OPERATION.

2.3.1.1 IN THE TANKERS AND IN THE TANK-TANKERS, THE INTERMEDIATE TANK MUST AUTOMATICALLY GUARANTEE THE VISIBILITY OR RECOGNITION OF A CONSTANT LEVEL, BOTH AT THE BEGINNING AND AT THE END OF THE MEASUREMENT OPERATION.

VARIATIONS OF THE ALLOWED CONSTANT LEVEL MUST CORRESPOND TO A VOLUME EQUAL TO OR LESS THAN THE MAXIMUM TOLERATED ERROR FOR THE MINIMUM RECEPTION.

2.3.1.2 IN TANK-TANKERS THERE WILL BE NO NEED FOR THE AUTOMATIC ESTABLISHMENT OF A CONSTANT LEVEL. IN THIS CASE THE LIQUID VARIATIONS MUST BE MEASURED.

IF THE DISCHARGE OF THE TANKERS IS CARRIED OUT BY MEANS OF PUMPS LOCATED AT THE BOTTOM OF THE VESSEL, THE INTERMEDIATE TANK MAY BE USED ONLY AT THE BEGINNING AND AT THE END OF THE LIQUID INLET OPERATION.

2.3.1.3 IN THE TWO CASES PROVIDED FOR IN PARAGRAPHS 2.3.1.1 AND 2.3.1.2, THE INTERMEDIATE TANK SECTION MUST BE DESIGNED IN SUCH A WAY THAT AN AMOUNT EQUAL TO THE MAXIMUM ERROR TOLERATED FOR THE MINIMUM RECEPTION CORRESPONDS TO A DIFFERENCE LEVEL OF, AT LEAST, 2 MILLIMETERS.

2.4 SYSTEMS FIXED OR INSTALLED IN TANK-TRUCKS INTENDED FOR THE MEASUREMENT OF LIQUEFIED PRESSURE GASES (WITH THE EXCEPTION OF CRYOGENIC LIQUIDS).

2.4.1 THE UNION OF THE MEASURING SYSTEMS WITH THEIR POWER TANKS MUST BE PERMANENTLY PERFORMED BY RIGID PIPES. AN ANTI-RETURN VALVE MUST BE PLACED BETWEEN THE POWER TANKS AND THE COUNTER.

2.4.2 DURING THE MEASUREMENT OPERATION, A PRESSURE MAINTENANCE DEVICE, PLACED AFTER THE COUNTER, SHALL ENSURE THE MAINTENANCE OF THE LIQUID STATE OF THE PRODUCT IN THE COUNTER. THE NECESSARY PRESSURE MAY BE MAINTAINED EITHER IN A FIXED VALUE OR IN A VALUE ADJUSTED TO THE CONDITIONS OF MEASUREMENT.

2.4.2.1 WHEN THE PRESSURE IS MAINTAINED AT A FIXED VALUE IT MUST BE EQUAL TO OR GREATER THAN THE VAPOUR PRESSURE OF THE PRODUCT, FOR A HIGHER TEMPERATURE BY 15 DEGREES C. AT THE HIGHEST POSSIBLE TEMPERATURE IN SERVICE. THE ADJUSTMENT MECHANISM OF THE PRESSURE MAINTENANCE DEVICE SHALL BE SEALED.

2.4.2.2 WHEN THE PRESSURE IS ADJUSTED TO THE MEASUREMENT CONDITIONS, THE PRESSURE SHALL BE AT LEAST 100 KPA (A BAR) AT THE VAPOUR PRESSURE OF THE LIQUID DURING THE MEASUREMENT OPERATION. THIS FUNCTION MUST BE AUTOMATIC.

2.4.2.3 IN THE INDUSTRIAL FIXED MEASUREMENT SYSTEMS THE COMPETENT METROLOGY SERVICE MAY AUTHORISE MAINTENANCE DEVICES OF THE MANUAL ADJUSTMENT PRESSURE. IN THIS CASE THE PRESSURE AT THE OUTLET OF THE COUNTER MUST BE AT LEAST EQUAL TO THE VAPOUR PRESSURE OF THE PRODUCT, FOR A TEMPERATURE ABOVE 15 DEGREES C AT THE TEMPERATURE OF THE LIQUID DURING THE MEASUREMENT. IN THIS CASE, A DIAGRAM INDICATING THE VAPOUR PRESSURE OF THE MEASURED PRODUCT ACCORDING TO ITS TEMPERATURE WILL NEED TO BE PLACED IN THE MEASUREMENT SYSTEM. WHEN THESE MEASURING SYSTEMS ARE DESIGNED TO OPERATE WITHOUT CONTROL FOR LONG PERIODS OF TIME, THEY MUST BE EQUIPPED WITH RECORDING EQUIPMENT TO PERMANENTLY INDICATE THE TEMPERATURE AND PRESSURE.

2.4.3 THE COUNTER MUST BE PRECEDED BY A GAS REMOVAL DEVICE, EITHER BY A GAS SEPARATOR OR BY A CONDENSER CUBA.

2.4.3.1 THE GAS SEPARATOR SHALL COMPLY WITH THE GENERAL REQUIREMENTS REFERRED TO IN POINT 1, EITHER WITH RESPECT TO THE LIQUEFIED GAS ITSELF OR FOR A HIGHER VISCOSITY LIQUID.

HOWEVER, DUE TO DIFFICULTIES WHICH MAY ARISE IN THE CONTROL, IT SHALL BE PERMISSIBLE FOR A GAS SEPARATOR TO BE APPROVED WHEN ITS USEFUL VOLUME IS AT LEAST EQUAL TO 1,5 PER 100 OF THE VOLUME SUPPLIED IN ONE MINUTE. MAXIMUM FLOW RATE, IN THE CASE WHERE THE PIPE JOINING THE COUNTER WITH THE SUPPLY TANK IS A LENGTH OF 25 METRES OR LESS. WHEN THE LENGTH OF THIS PIPE EXCEEDS 25 METRES, THE USEFUL VOLUME OF THE GAS SEPARATOR SHALL BE EQUAL TO OR GREATER THAN 3 PER 100 OF THE VOLUME SUPPLIED IN ONE MINUTE AT MAXIMUM FLOW RATE.

IN LIQUEFIED GAS MEASUREMENT SYSTEMS IT WILL NOT BE NECESSARY TO INSTALL A GAS INDICATOR OR A CONTROL VIEWFINDER.

THE EXHAUST PIPE MAY BE CONNECTED TO THE SPACE CONTAINING THE GASEOUS PHASE OF THE FEEDING TANK, OR TO AN AUTONOMOUS PRESSURE MAINTENANCE DEVICE, REGULATED AT A LOWER PRESSURE, IN 50 TO 100 KPA (0.5 TO 1 BAR), AT THE OUTLET PRESSURE OF THE COUNTER. THIS CONDUIT MAY INCORPORATE A CLOSURE VALVE WHICH, HOWEVER, MUST NOT BE ABLE TO BE CLOSED DURING THE MEASUREMENT.

2.4.3.2 THE VOLUME OF THE CONDENSER CUBA DEPENDS ON THE VOLUME OF THE DUCTS BETWEEN THE VALVE OF THE SUPPLY TANK AND THE PRESSURE MAINTENANCE VALVE LOCATED AFTER THE COUNTER. THIS VOLUME SHALL BE AT LEAST EQUAL TO TWICE THE VOLUME OF THE LIQUID WHICH MAY BE PRODUCED FOR A TEMPERATURE DECREASE WHICH IS CONVENTIONALLY FIXED AT 10 DEGREES C FOR THE AIR DUCTS AND 2 DEGREES C FOR THE DUCTS. BURIED OR COVERED WITH A CALORIFUGO.

FOR THE EVALUATION OF THAT VOLUME, INSTEAD OF THE EXACT VALUE OF THE COEFFICIENT OF THERMAL EXPANSION, THE VALUES OF 3 X 10 PER DEGREE CELSIUS FOR PROPANE AND PROPYLENE AND 2 X 10 PER DEGREE CELSIUS FOR BUTANE AND THE BUTADIENE. FOR THE REMAINING PRODUCTS SUBJECT TO HIGH VAPOUR PRESSURE, THE VALUES OF THE COEFFICIENT TO BE ADOPTED SHALL BE FIXED BY THE COMPETENT METROLOGY SERVICE.

THE CONDENSER CUBA MUST BE EQUIPPED WITH A MANUAL EXTRACTOR.

IN A MEASUREMENT SYSTEM IT MUST BE INSTALLED AT THE HIGH POINT OF THE PIPELINE.

THE RESULTING VOLUME OF THE PRECEDING CALCULATION MAY BE DISTRIBUTED AMONG DIFFERENT CONDENSER VATS LOCATED AT HIGH POINTS OF THE PIPELINE.

2.4.4 A THERMOMETRIC WELL NEAR THE COUNTER MUST BE PROVIDED. THE THERMOMETER USED MUST HAVE A GRADUATION STEP EQUAL TO OR LESS THAN 0,5 DEGREES C SHALL BE VERIFIED.

ENTER THE COUNTER AND THE PRESSURE MAINTENANCE VALVE MUST INSTALL A PRESSURE GAUGE.

IN THE TRUCK INSTALLED MEASURE SYSTEMS IT WILL BE SUFFICIENT TO HAVE ONE

TAKE MANometric.

2.4.5 WHEN THE MEASURE IS CARRIED OUT BY MEANS OF A SYSTEM INSTALLED ON A TANKER, THE UNION SHALL NOT BE PERMITTED BETWEEN THE GASEOUS PHASES OF THE FEEDING TANK AND THE RECEPTION TANK.

2.4.6 THE INCORPORATION INTO THE SYSTEM OF MEASUREMENT OF SAFETY VALVES IS AUTHORIZED TO PREVENT ABNORMALLY HIGH PRESSURES. IF SUCH VALVES ARE LOCATED AFTER THE COUNTER, THEY MUST EITHER FLOW INTO THE OPEN AIR OR BE CONNECTED TO THE RECEPTION TANK.

IN NO CASE, THE SECURITY VALVES LOCATED BEFORE THE COUNTER MAY BE CONNECTED TO THE VALVES LOCATED AFTER THE COUNTER, BY MEANS OF A BYPASS PIPE ().

2.4.7 WHEN OPERATING CONDITIONS REQUIRE THE USE OF DETACHABLE HOSES, THESE HOSES MUST REMAIN FULL IF THEIR VOLUME IS GREATER THAN THE MAXIMUM ERROR TOLERATED FOR THE MINIMUM SUPPLY.

REMOVABLE HOSES OF THE OPERATING SYSTEMS MUST BE PROVIDED WITH SPECIAL CONNECTIONS FOR FULL HOSES, CALLED COUPLERS. MANUAL EXTRACTION DEVICES, LOCATED AT THE ENDS OF SUCH HOSES, SHALL BE FITTED WHERE NECESSARY.

2.4.8 THE DOUBLE LOCKING DEVICE CONTROL STEP KEY, CONSIDERED IN POINT 1.11 FOR AN EVENTUAL BYPASS CHANNELLING OVER THE COUNTER, MAY BE CLOSED FOR SAFETY REASONS. IN THIS CASE, A GAUGE BETWEEN THE TWO LOCKING MECHANISMS OR ANY OTHER EQUIVALENT SYSTEM SHALL ALLOW THE TIGHTNESS TO BE CONTROLLED.

2.5 MEASUREMENT SYSTEMS FOR MILK:

2.5.1 THE REQUIREMENTS OF PARAGRAPH 2.5 SHALL APPLY TO THE TRANSPORTABLE MEASURING SYSTEMS USED FOR THE RECEPTION OF MILK IN THE COLLECTION-TANK TRUCKS, TO THE FIXED-MEASURE SYSTEMS USED FOR THE RECEPTION AND TO THE FIXED OR TRANSPORTABLE MEASURING SYSTEMS USED FOR THE SUPPLY OF MILK.

2.5.2 IN FACILITIES INTENDED FOR RECEPTION, THE TRANSFER POINT SHALL BE MATERIALIZED AT A CONSTANT LEVEL IN A DEPOSIT LOCATED BEFORE THE COUNTER. THIS CONSTANT LEVEL MUST BE OBSERVABLE BEFORE AND AFTER EACH MEASUREMENT OPERATION, AND SET AUTOMATICALLY.

2.5.2.1 WHEN THE COUNTER IS FED BY A PUMP, THE TANK AT CONSTANT LEVEL MAY BE LOCATED EITHER BEFORE THE PUMP OR BETWEEN THE PUMP AND THE COUNTER.

2.5.2.1.1 IN THE FIRST CASE, THE DEPOSIT MAY BE FED, BY GRAVITY, BY DUMPING OF DRUMS, BY MEANS OF AN AUXILIARY PUMP OR A VACUUM SYSTEM.

IF THE MILK IS INTRODUCED INTO THE TANK BY A PUMP OR BY THE ACTION OF A VACUUM SYSTEM, A GAS REMOVAL DEVICE IS REQUIRED WHICH CAN BE COMBINED WITH THE TANK AT CONSTANT LEVEL.

2.5.2.1.2 IN THE SECOND CASE, THE TANK AT CONSTANT LEVEL MUST ENSURE THE GAS REMOVAL OPERATION.

2.5.2.2 AS EXCEPTION TO POINT 1.8.3, THE COUNTER MAY BE FED BY THE ACTION OF A VACUUM SYSTEM. IN THIS CASE, SINCE THE PRESSURE INSIDE THE PIPELINE LINKING THE TANK TO THE CONSTANT LEVEL WITH THE COUNTER REMAINS LOWER THAN THE ATMOSPHERIC PRESSURE, IT MUST BE ENSURED, IN PARTICULAR, THE TIGHTNESS OF THE CONNECTIONS OF THE SAID JUNCTION. SUCH TIGHTNESS MUST BE CONTROLLED.

2.5.2.3 IN ALL RECEPTION CASES, PIPES LOCATED BEFORE THE CONSTANT LEVEL MUST BE AUTOMATICALLY AND FULLY EMPTIED UNDER NORMAL OPERATING CONDITIONS.

2.5.2.4 THE CONTROL OF THE CONSTANT LEVEL WILL BE PERFORMED BY A VIEWER OR A LEVEL INDICATOR. THE LEVEL SHALL BE CONSIDERED CONSTANT WHEN IT IS ESTABLISHED IN A ZONE DELIMITED BY TWO STROKES CORRESPONDING TO A DIFFERENCE OF VOLUME EQUAL TO OR LESS THAN TWICE THE MAXIMUM TOLERATED ERROR FOR THE MINIMUM SUPPLY. THE DISTANCE BETWEEN THE TWO STROKES MUST BE AT LEAST 15 MILLIMETRES.

2.5.2.5 WHEN, TO MEET THE CONDITION OF PARAGRAPH 2.5.2.4, THE MEASUREMENT SYSTEM IS EQUIPPED WITH DECELERATING DEVICES, THE FLOW RATE DURING THE DECELERATION PERIOD SHALL BE MAINTAINED AT LEAST EQUAL TO THE MINIMUM FLOW RATE OF THE CONTACT.

2.5.2.6 AT RECEPTION FACILITIES, WHERE THE MEASURED LIQUID IS CARRIED AT A LOWER LEVEL THAN THE METER, AN AUTOMATIC DEVICE SHALL BE INSTALLED TO ENSURE, AT THE OUTLET OF THE COUNTER, A PRESSURE GREATER THAN THE PRESSURE ATMOSPHERIC.

2.5.3 THE MEASUREMENT SYSTEMS USED FOR THE SUPPLY OF MILK SHALL COMPLY WITH THE REQUIREMENTS OF PARAGRAPH 1.

2.5.4 NOTWITHSTANDING THE PROVISIONS OF PARAGRAPH 1 CONCERNING THE REMOVAL OF AIR OR GASES, THE GAS DISPOSAL DEVICES SHALL COMPLY WITH THE REQUIREMENTS OF PARAGRAPH 1.6.1 ONLY UNDER THE OPERATING CONDITIONS, THAT IS, WITH AIR INTAKE AT THE BEGINNING AND AT THE END OF EACH MEASUREMENT OPERATION.

FOR RECEPTION FACILITIES, THE USER MUST BE ABLE TO ENSURE THE PERFECT TIGHTNESS OF THE CONNECTIONS SO THAT NO AIR INTAKE OCCURS BEFORE THE COUNTER. IN THE SUPPLY FACILITIES, THE ASSEMBLY MUST BE CARRIED OUT IN SUCH A WAY THAT THE PRESSURE OF THE LIQUID IS ALWAYS SUPERIMPOSED ON THE ATMOSPHERIC PRESSURE, AT THE LEVEL OF THE JOINTS LOCATED AFTER THE FEEDING CUBA.

3. MODEL APPROVAL AND PRIMITIVE VERIFICATION

3.1 MODEL APPROVAL:

3.1.1 WILL BE SUBJECT TO MODEL APPROVAL OR, IF CASE, EEC MODEL APPROVAL, THE FOLLOWING SYSTEMS:

MEASUREMENT SYSTEMS FOR THE SUPPLY OF LIQUID FUEL TO MOTOR VEHICLES, CONSIDERED IN PARAGRAPH 2.1. WHEN SUCH SYSTEMS ARE TO BE INSTALLED ON A CENTRAL FEEDING SYSTEM, THE MODEL APPROVAL CERTIFICATE SHALL BE COMPLETED WITH ONE OR MORE DRAWINGS, SPECIFYING THE CONDITIONS FOR ASSEMBLY AT THE PLACE OF USE.

MEASUREMENT SYSTEMS INSTALLED ON TRUCK-TANKERS INTENDED FOR ROAD TRANSPORT AND THE SUPPLY OF LOW-VISCOSITY LIQUIDS (VISCOSITY < = 20 MPA.S) STORED AT ATMOSPHERIC PRESSURE (WITH THE EXCEPTION OF LIQUIDS) FOOD), AS REFERRED TO IN POINT 2.2.

PRESSURE-LIQUEFIED GAS MEASUREMENT SYSTEMS INSTALLED ON TANKER TRUCKS, AS REFERRED TO IN POINT 2.4.

MEASUREMENT SYSTEMS USED FOR THE RECEPTION OF MILK, REFERRED TO IN POINT 2.5.

3.1.2 ESSAYS:

3.1.2.1 IN THE CONDUCT OF THE TESTS, THE WORKING PATTERNS AND THEIR USE SHALL BE DETERMINED IN SUCH A WAY THAT THE IMPRECISION OF THE CALIBRATION METHOD DOES NOT EXCEED ONE-FIFTH OF THE MAXIMUM ERROR TOLERATED FOR THE SYSTEM A MEASURE TO CONTROL.

3.1.2.2 COUNTER TEST: IT IS APPROPRIATE TO FIRST DETERMINE THE CURVE OF THE ERRORS ACCORDING TO THE FLOW RATE, USING A SUFFICIENTLY LARGE NUMBER OF MEASUREMENT POINTS BETWEEN THE MINIMUM FLOW RATE AND THE FLOW RATE. MAXIMO. IT IS APPROPRIATE TO CHECK, IN PARTICULAR, THE EXTENT OF THE RANGE OF COUNTER ERRORS IN THAT AREA, THE POSITION OF THE ERROR CURVE WITH RESPECT TO THE LINE OF ZERO BEING OF MINOR IMPORTANCE.

TESTING MAY ALSO BE NECESSARY OUTSIDE THE PERMITTED FLOW LIMITS.

AS FAR AS POSSIBLE, THE TESTS SHALL BE CARRIED OUT UNDER THE OPERATING LIMIT CONDITIONS, THAT IS TO SAY, WITHIN THE PRESCRIBED TEMPERATURE AND VISCOSITY LIMITS, AND FOR THE MINIMUM SUPPLY.

EXCEPT IN THE CASE OF TESTS CONCERNING THE MINIMUM SUPPLY, THE VOLUME TO BE TESTED SHALL BE CHOSEN SUFFICIENTLY LARGE TO ENSURE THAT THE VALUE OF THE STEP OF THE INDICATOR DEVICE IS NEVER GREATER THAN ONE THIRD OF THE MAXIMUM TOLERATED ERROR.

WHEN A MODEL APPROVAL HAS ALREADY BEEN GRANTED OR, WHERE APPROPRIATE, AN APPROVAL OF THE EEC MODEL TO THE COUNTER AND ANY ADDITIONAL DEVICES, IT SHALL BE APPROPRIATE TO CHECK WHETHER THE CHARACTERISTICS OF THE COUNTER AND THE CHARACTERISTICS OF THE SYSTEM OF MEASUREMENT ARE IN AGREEMENT. IF YES, NO FURTHER TESTS SHALL BE REQUIRED FOR THE COUNTER. HOWEVER, THE MINIMUM SUPPLY OF THE MEASURING SYSTEM SHALL BE DETERMINED IN ACCORDANCE WITH POINT 4.2 OF CHAPTER I OF ANNEX I TO THE ORDER GOVERNING THE CONTROL OF VOLUMETRIC METERS OF LIQUIDS OTHER THAN WATER AND THEIR DEVICES SUPPLEMENTARY.

WHEN THE CHARACTERISTICS OF THE COUNTER AND THOSE OF THE MEASUREMENT SYSTEM DIFFER OR WHERE THE APPROVAL OF THE MODEL OR, WHERE APPROPRIATE, THE APPROVAL OF THE EEC MODEL FOR THE COUNTER (AND ANY DEVICES) HAS NOT BEEN granted THE SYSTEM OF MEASUREMENT SHALL, IN ITS ENTIRETY, BE SUBJECTED TO THE TESTS PROVIDED FOR BY THIS PROVISION AND SHALL BE ESTABLISHED FOR THE VOLUMETRIC METERS OF LIQUIDS OTHER THAN WATER AND THEIR COMPLEMENTARY DEVICES.

3.1.2.3 TESTS FOR THE REMOVAL OF AIR OR GAS: TESTS MUST SHOW THAT THE AIR OR GAS DISPOSAL DEVICES COMPLY WITH THE REQUIREMENTS OF POINTS 1.6.2.1.4, 1.6.2.1.5 AND 1.6.2.2.4.

IN THE CASE OF GAS SEPARATORS AND SPECIAL GAS EXTRACTORS, IT IS NECESSARY TO CONTROL THE CONTINUOUS ELIMINATION BY COMPARISON OF THE MEASUREMENT RESULTS OF AN APPROPRIATE VOLUMETRIC METER, INTERSPERSED AFTER OF THE SEPARATOR (SPECIAL EXTRACTOR), WITH AND WITHOUT THE ADDITION OF AIR OR GASES.

IN THE CASE OF SPECIAL EXTRACTORS, IT WILL ALSO BE NECESSARY TO CARRY OUT TOTAL TANK EMPTYING TESTS. WHERE POSSIBLE, TESTS MUST BE CARRIED OUT ON THE LIQUID WHICH MEETS THE MOST UNFAVOURABLE CONDITIONS. IN THE CASE OF TESTS ON PROTOTYPES OR MODELS CARRIED OUT AT A DIFFERENT SCALE FROM THAT OF THE ACTUAL DEVICE, IT IS NECESSARY TO TAKE INTO ACCOUNT SIMILAR LAWS RELATING TO VISCOSITY (REYNOLDS), GRAVITY (FRODE) AND SURFACE TENSION (WEVER). AS A GENERAL RULE, SUCH MODEL TESTS SHALL ONLY BE CARRIED OUT WHEN JUSTIFIED.

3.1.2.4 TESTS ON PARTICULAR MEASUREMENT SYSTEMS:

3.1.2.4.1 MEASUREMENT SYSTEMS FOR SUPPLYING LIQUID FUEL TO MOTOR VEHICLES.

TRIALS SHOULD UNDERSTAND:

A) THE CONTROL OF THE COUNTER AND THE COMPLEMENTARY DEVICES, AS WELL AS THE DETERMINATION OF THE INFLUENCE OF THE LATTER (PRICE INDICATOR, PRINTER, PREDETERMINATOR, ETC.).

B) THE CONTROL OF THE GAS REMOVAL DEVICE.

C) THE CONTROL OF THE CONSTANCY OF THE VOLUME OF THE HOSE.

D) A SPECIAL CONTROL TO DETERMINE THE REGULARITY OF THE ADVANCE OF THE PRICE INDICATOR (AN IRREGULAR ADVANCE MAY BE CAUSED, ESPECIALLY AS REGARDS THE FIRST ELEMENT OF THE PRICE INDICATOR, DUE TO THE ABRUPT CLOSURE OF THE PRICE INDICATOR DELIVERY VALVE).

3.1.2.4.2 LIQUEFIED GAS MEASUREMENT SYSTEMS. THE EXAMINATION MUST INCLUDE:

A) THE CONTROL, ON A PLANE, OF THE GAS SEPARATORS AS REGARDS THE AREA OF EFFICIENCY AND THE ASSEMBLY.

B) AN OPERATING TEST OF THE GAS REMOVAL DEVICE (LEVEL REGULATOR) INCORPORATED, IF APPLICABLE, TO THE GAS SEPARATOR.

THE PRESSURE MAINTENANCE DEVICE MUST ALSO BE CHECKED AT THE PLANES. WHERE APPROPRIATE, A MODEL TEST MAY BE NECESSARY IN SUCH CASES AS MAY BE DETERMINED BY THE SUPERVISORY AUTHORITY.

3.1.3 AS REGARDS THE MEASUREMENT SYSTEMS REFERRED TO IN POINTS 2.2 AND 2.4, THE APPROVAL OF THE MODEL OR, WHERE APPROPRIATE, THE APPROVAL OF THE EEC MODEL MAY BE GRANTED ON THE BASIS OF A STUDY ON PLANS AND SCHEMES, WHEN COMPLYING WITH THE REQUIREMENTS OF PARAGRAPH 4 OF THIS ANNEX.

3.2 PRIMITIVE VERIFICATION:

3.2.1 GENERALATIONS:

3.2.1.1 THE PRIMITIVE VERIFICATION OR, WHERE APPROPRIATE, THE ORIGINAL EEC VERIFICATION OF A MEASUREMENT SYSTEM SHALL BE CARRIED OUT IN ONE OR TWO PHASES.

3.2.1.1.1 WILL BE CARRIED OUT IN A SINGLE PHASE WHEN THE SYSTEM IS FULLY MANUFACTURED BY A SINGLE MANUFACTURER, WHEN THE SYSTEM CAN BE TRANSPORTED WITHOUT BEING DISASSEMBLED AND WHEN VERIFIED UNDER THE CONDITIONS INTENDED FOR EXPLOITATION.

3.2.1.1.2 WILL BE CARRIED OUT IN TWO PHASES IN OTHER CASES.

THE FIRST PHASE SHALL BE PERFORMED ON THE COUNTER ONLY OR PROVIDED WITH THE COMPLEMENTARY DEVICES TO BE ASSOCIATED, INCLUDING OR NOT ON A SUBSYSTEM. THE CONTROLS OF THIS FIRST STAGE MAY BE CARRIED OUT ON A TEST BENCH (POSSIBLY ON THE PREMISES OF THE MANUFACTURER) OR ON THE INSTALLED MEASUREMENT SYSTEM. IN THIS CASE, METROLOGICAL EXAMINATIONS MAY BE CARRIED OUT WITH LIQUIDS OTHER THAN THOSE FOR WHICH THE MEASUREMENT SYSTEM HAS BEEN DESIGNED.

THE SECOND PHASE WILL BE PERFORMED ON THE MEASUREMENT SYSTEM UNDER REAL OPERATING CONDITIONS. IT SHALL BE CARRIED OUT AT THE PLACE OF INSTALLATION, ON THE OPERATING CONDITIONS AND WITH THE LIQUID TO WHICH IT IS INTENDED.

HOWEVER, THE SECOND STAGE MAY BE CARRIED OUT IN A PLACE CHOSEN BY THE METROLOGY SERVICE IN QUESTION, WHERE THE MEASUREMENT SYSTEM CAN BE CARRIED WITHOUT THE NEED TO BE DISMANTLED AND THE TESTS CAN BE CARRIED OUT IN THE OPERATING CONDITIONS LAID DOWN FOR THE MEASUREMENT SYSTEM.

3.2.2 ESSAYS:

3.2.2.1 WHEN THE PRIMITIVE VERIFICATION IS CARRIED OUT IN A SINGLE PHASE, ALL THE TESTS REFERRED TO IN PARAGRAPH 3.2.2.2 ABOVE SHALL BE CARRIED OUT.

3.2.2.2 WHEN TESTS ARE CARRIED OUT IN TWO PHASES:

THE FIRST PHASE WILL CONSIST OF:

A COMPLIANCE EXAMINATION OF THE COUNTER, INCLUDING THE INTENDED AUXILIARY DEVICES (CONFORMITY WITH THE RESPECTIVE MODELS).

A METROLOGICAL EXAMINATION OF THE COUNTER, INCLUDING ASSOCIATED COMPLEMENTARY DEVICES.

THE SECOND PHASE WILL CONSIST OF:

A CONFORMITY EXAMINATION OF THE MEASUREMENT SYSTEM, INCLUDING THE COUNTER AND THE COMPLEMENTARY DEVICES.

A METROLOGICAL EXAMINATION OF THE COUNTER AND OF THE COMPLEMENTARY DEVICES IN THE MEASUREMENT SYSTEM.

A TEST OF OPERATION OF THE GAS REMOVAL DEVICE, WHERE IT EXISTS, AND WITHOUT IT BEING NECESSARY TO VERIFY THE MAXIMUM OWN ERRORS OF THIS DEVICE REFERRED TO IN POINT 1.6.

AN INSPECTION OF THE ADJUSTMENT OF THE PRESCRIBED PRESSURE MAINTENANCE DEVICES.

A CONTROL OF THE VARIATIONS OF THE INTERNAL VOLUME OF THE HOSES ON THE SYSTEMS OPERATING UNDER .

THE DETERMINATION OF THE RESIDUAL AMOUNTS ON THE SYSTEMS THAT OPERATE UNDER .

4. MEASUREMENT SYSTEMS MOUNTED ON TANKER TRUCKS

4.1 GENERAL PROVISIONS: MEASUREMENT SYSTEMS MOUNTED ON TANK TRUCKS CONSIDERED IN POINTS 2.2 AND 2.4 MAY OBTAIN A MODEL APPROVAL OR, IF CASE, AN EEC MODEL APPROVAL, FROM THE STUDY OF THE SUBMITTED DOCUMENTATION, IF THEY AGREE WITH ONE OF THE SCHEMAS IN POINT 4.2 AND SATISFY THE FOLLOWING REQUIREMENTS:

4.1.1 THE INSCRIPTIONS PROVIDED FOR IN POINT 1.16 MUST BE COMPLETED WITH THE INDICATION OF THE SCHEME ADOPTED.

4.1.2 THE ELEMENTS CONSTITUTING THE MEASUREMENT SYSTEM MUST HAVE BEEN THE SUBJECT OF A MODEL APPROVAL, WHEN THIS APPROVAL IS PROVIDED FOR BY THE ORDER GOVERNING THE CONTROL OF VOLUMETRIC LIQUID METERS DIFFERENT FROM THE WATER AND ITS COMPLEMENTARY DEVICES, OR BY THIS PROVISION.

4.1.3 WHEN THE TANK HAS SEVERAL COMPARTMENTS, THE OUTLET PIPES OF THE COMPARTMENTS MAY BE CONNECTED TO A MEASURING SYSTEM EITHER SEPARATELY OR BY MEANS OF A COLLECTING PIPE, UNLESS OTHERWISE SPECIFIED IN THE CORRESPONDING SCHEME. IN ANY CASE, THE PROVISIONS OF THE SECOND PARAGRAPH OF POINT 2.2.1 ARE APPLICABLE.

WHEN A MEASUREMENT SYSTEM IS CONNECTED TO SEVERAL COMPARTMENTS BY MEANS OF A COLLECTOR PIPE, THERE WILL BE A DEVICE TO PREVENT SIMULTANEOUS COMMUNICATION OF SEVERAL COMPARTMENTS WITH THE MEASUREMENT SYSTEM.

HOWEVER, THIS PRESCRIPTION IS NOT APPLICABLE IF THE MEASUREMENT SYSTEM INCLUDES A GAS SEPARATOR ACCORDING TO 1.6.2.1.4.

4.1.4 IF A TANKER COMPRISES TWO MEASURING SYSTEMS WHICH COULD BE CONNECTED TO ONE OR MORE SPECIFIED COMPARTMENTS, ACCORDING TO THE NEEDS, THE PIPES AND VALVES SHALL BE ARRANGED IN SUCH A WAY AS TO RENDER IMPOSSIBLE THE SIMULTANEOUS SPLICING OF THE TWO MEASUREMENT SYSTEMS TO THE SAME COMPARTMENT. IN ADDITION, THE CONNECTIONS BETWEEN COMPARTMENTS AND MEASURING SYSTEMS SHOULD BE CLEARLY STATED IN ORDER TO PREVENT A COMPARTMENT FROM BEING WRONGLY CONNECTED TO A SYSTEM OF MEASUREMENT OTHER THAN THAT PROVIDED FOR IN THE MEASURE OF THE PRODUCT CONTAINED IN SAID COMPARTMENT.

4.1.5 WHEN AN ANTI-SWIRL DEVICE IS PRESCRIBED, IT MAY BE COMBINED WITH THE VALVE IN THE BOTTOM OF THE COMPARTMENT.

4.1.6 PIPES, VALVES AND PASS KEYS BETWEEN COMPARTMENTS AND MEASURING SYSTEMS SHALL BE ARRANGED IN SUCH A WAY AS TO MAKE IT IMPOSSIBLE TO SPLICE A MEASURING SYSTEM WITH AN EXTERNAL TANK TO THE TANKER.

4.1.7 THE FILTER, WHICH NORMALLY GOES TO THE ENTRANCE OF THE COUNTER OR THE GAS REMOVAL DEVICE, MAY BE INCORPORATED INTO THE LATTER.

4.1.8 WHEN DEVICES ARE PROVIDED FOR SUPPLIES WITHOUT PASSING THROUGH THE COUNTER, THESE DEVICES MUST BE ABLE TO BE SEALED WITH A VIEW TO THE POSSIBLE APPLICATION OF OTHER REQUIREMENTS.

4.1.9 IN THE CASE OF MEASUREMENT SYSTEMS WITH TWO-WAY STEP KEYS, THESE MUST BE CONSTITUTED IN SUCH A WAY THAT SIMULTANEOUS COMMUNICATION BETWEEN THE THREE HOLES IS IMPOSSIBLE.

4.2 SCHEMAS:

SCHEMA S 1

OPERATION BY FORCE OF GRAVITY WITH PERMANENT OUTPUT TO THE ATMOSPHERE AT THE LEVEL OF THE TRANSFER POINT

ALLOWS ONLY SUPPLIES PER COUNTER (EMPTY HOSE).

(SCHEMA OMITTED)

SCHEMA TEXT S 1

IF THE TANKER IN THE TRUCK HAS SEVERAL COMPARTMENTS, THE MEASUREMENT SYSTEM MUST BE CONNECTED DIRECTLY, AND PERMANENTLY, TO A WELL DEFINED COMPARTMENT, WITHOUT INTERMEDIATE COLLECTING TUBING.

A = ANTI-SWIRL DEVICE.

F = FILTER. THE FILTER SHALL BE DESIGNED AND INSTALLED IN SUCH A WAY THAT ITS CLEANING DOES NOT RESULT IN THE EMPTYING OF THE COUNTER OR THE VIEWER (V 1 OR V 2, AS THE CASE MAY BE).

THE FILTER MUST BE ENTIRELY BELOW THE LEVEL OF THE TRANSFER POINT.

T 1, T 2 = AUTHORIZED VARIANTS FOR GAS EVACUATION:

T 1 = EVACUATION KEY AND ANTI-RETURN VALVE TO PREVENT THE INTRODUCTION OF GAS INTO THE MEASUREMENT SYSTEM.

T 2 = RETURN TO THE GASEOUS PHASE IN THE TANK COMPARTMENT.

CAR = ANTIRETURN VALVE TO PREVENT GAS PASSAGE, IN THE CASE OF THERMAL OVERPRESSURE IN THE CISTERN.

C = CONTACT.

VM = MANEUVER VALVE.

I AND II = VARIANTS OF THE EMPTY HOSE DELIVERY DEVICE.

V 1 = OVERFLOW VIEWER.

V 2 = VIEWFINDER AS DEFINED IN PARAGRAPH 1.1.8 AND WHICH ALSO COMPLIES WITH THE FUNCTION OF A GAS INDICATOR.

AT = PERMANENT OUTPUT VALVE TO THE ATMOSPHERE, WITH A SECTION SUFFICIENT TO ENSURE AT THE COUNTER A PRESSURE, AT LEAST EQUAL TO THE ATMOSPHERIC PRESSURE. THE PERMANENT OUTLET TO THE ATMOSPHERE CAN BE SECURED BY A VERTICAL TUBE WITHOUT A VALVE. IF THE PIPE IS CONNECTED TO THE TOP OF THE TANK, THE ANTI-RETURN VALVE CAN BE DELETED.

H = LOAD HEIGHT OF THE LIQUID.

H = TANK BOTTOM HEIGHT WITH RESPECT TO THE TRANSFER POINT. THIS HEIGHT SHALL BE SUFFICIENT TO ENSURE A FLOW, AT LEAST EQUAL TO THE MINIMUM FLOW OF THE COUNTER, TO THE COMPLETE EMPTYING OF THE TANK.

SCHEMA S 2

OPERATION BY FORCE OF GRAVITY WITHOUT PERMANENT OUTPUT TO THE ATMOSPHERE AT THE LEVEL OF THE TRANSFER POINT DURING SUPPLIES

ALLOWS: A) THE SUPPLY BY COUNTER (EMPTY HOSE).

B) THE DIRECT SUPPLY WITHOUT COUNTER, THE EMPTYING AND FILLING OF THE TANK WITHOUT PASSING THROUGH THE COUNTER.

(SCHEMA OMITTED)

SCHEMA TEXT S 2

PIPES BETWEEN COMPARTMENTS AND MEASUREMENT SYSTEM MUST ENSURE PERMANENT CONNECTIONS.

A = ANTI-SWIRL DEVICE.

R = TWO-WAY STEP-KEY THAT ENABLES COUNTER SUPPLIES, NON-COUNTER SUPPLIES, EMPTYING AND FILLING OF THE CISTERN WITHOUT PASSING THROUGH THE COUNTER.

THIS KEY IS OPTIONAL. IT CAN BE REPLACED BY A DIRECT CONNECTION.

F = FILTER. A FLUSH KEY SHALL BE PERMITTED ONLY IF IT HAS AN ANTI-RETURN VALVE TO PREVENT GAS ENTERING THE MEASUREMENT SYSTEM.

PGS = SPECIAL GAS EXTRACTOR AS DEFINED IN POINT 1.1.5.

V 1 = VIEWER OF THE GAS SPECIAL EXTRACT.

T 1, T 2, T 3, T 4 = AUTHORIZED VARIANTS FOR THE GAS EVACUATION DEVICE:

T 1 = RETURN TO TANKER.

T 2 = OUTPUT TO THE ATMOSPHERE.

T 3 = USE OF A RECOVERY VESSEL OF LIQUID PARTICLES DRAWN BY GASES.

T 4 = UTILIZATION OF AN EVACUATION VALVE.

C = CONTACT.

VA = VALVE WHOSE CLOSURE IS AUTOMATICALLY SECURED BY THE SPECIAL GAS EXTRACTOR AS SOON AS THE PRESSURE IS INSUFFICIENT TO PREVENT ANY VAPORIZATION IN THE COUNTER OR WHEN A BAG OF GASES APPEARS IN THE EXTRACTOR. IN ADDITION, THIS VALVE MUST BE CLOSED IF YOUR COMMAND SYSTEM FAILS.

I AND II = VARIANTS OF THE EMPTY HOSE DELIVERY DEVICE.

VARIANT I= OVERFLOW VIEWER V 2

VARIANT II= VIEWER AS DEFINED IN 1.1.8, EQUALLY FULFILLING THE GAS INDICATOR FUNCTION V 3

VM = MANEUVER VALVE.

THE AUTOMATIC VALVE AND THE MANEUVER VALVE CAN BE INTEGRATED INTO A SPECIAL VALVE THAT PERFORMS BOTH FUNCTIONS. IN SUCH A CASE, THE TWO FUNCTIONS MUST BE INDEPENDENT OF EACH OTHER. IN VARIANT II THIS SPECIAL VALVE MUST BE PLACED AFTER VIEWFINDER V 3

AT = MANUAL OUTPUT TO THE ATMOSPHERE. IT CAN BE AUTOMATIC (FOR EXAMPLE, CLOSED AUTOMATICALLY DURING THE MEASUREMENT AND OPEN AT THE END OF THE MEASURE).

H = LOAD HEIGHT OF THE LIQUID.

H = TANK BOTTOM HEIGHT WITH RESPECT TO THE TRANSFER POINT. THIS HEIGHT MUST BE SUFFICIENT TO ENSURE A FLOW RATE, AT LEAST EQUAL TO THE METER ' S MINIMUM FLOW, TO THE FULL FLUSH OF THE TANK.

SCHEMA S 3

THE MEASUREMENT SYSTEM INCLUDES A PUMP, A GAS SEPARATOR, AND ONE OR TWO HOSES OPERATING UNDER FULL HOSE

ALLOWS:

A) PUMP AND COUNTER SUPPLY (HOSE FILLED).

B) THE DIRECT SUPPLY WITHOUT A COUNTER (WITH OR WITHOUT A PUMP), THE EMPTYING AND FILLING OF THE TANK WITHOUT PASSING THROUGH THE COUNTER.

(SCHEMA OMITTED)

SCHEMA TEXT S 3

R 1 = TWO-WAY STEP KEY THAT ALLOWS COUNTER SUPPLIES, WITHOUT COUNTER, EMPTYING AND FILLING OF THE CISTERN WITHOUT PASSING THROUGH THE COUNTER. THIS KEY IS OPTIONAL. IT CAN BE REPLACED BY A DIRECT CONNECTION.

P = BOMBA. THE PUMP MAY BE REVERSIBLE. IN THIS CASE, AN ANTI-RETURN VALVE MUST BE INSERTED BETWEEN THE R 2 KEY AND THE GAS SEPARATOR SG.

R 2 = TWO-WAY STEP-KEY, OPTIONAL THAT ALLOWS DIRECT NON-COUNTER SUPPLIES.

F = FILTER. THE FILTER MAY BE PROVIDED WITH A FLUSH KEY.

SG = GAS SEPARATOR ACCORDING TO POINT 1.6.2.1.4. THE LEVEL OF THE LIQUID IN THE GAS SEPARATOR MUST BE ABOVE THE LEVEL IN THE COUNTER.

T 1, T 2 = VARIANTS AUTHORIZED FOR THE GAS EVACUATION DEVICE.

T 1 = DIRECT RETURN TO TANKER,

T 2 = RETURN TO THE TANK THROUGH A RECOVERY VESSEL OF THE LIQUID PARTICLES DRAGGED BY THE GASES.

C = CONTACT.

VM = MANEUVER VALVE.

CL = ANTIRETURN valve.

FL 1 = HOSE FULL ON ROLLER.

FL 2 = SECOND HOSE FULL, OPTIONAL AND VERY SHORT, ALLOWING LARGE FLOW SUPPLIES.

CLA = VALVE TO PREVENT EMPTYING OF THE FILLED HOSE.

R 3 = DEVICE THAT, WHEN THE MEASUREMENT SYSTEM CARRIES TWO HOSES, MAKES IT POSSIBLE TO MAKE SUPPLIES WITH EITHER ONE OF THE TWO. THIS DEVICE MUST BE IN ACCORDANCE WITH THE FIRST PARAGRAPH OF POINT 1.10.1 AND THE SECOND PARAGRAPH OF PARAGRAPH 2.2.4 ABOVE.

SCHEMA S 4

THE MEASUREMENT SYSTEM CONSISTS OF A PUMP, A GAS SEPARATOR, AN EMPTY HOSE OR A FULL HOSE AND AN EMPTY HOSE

ALLOWS: A) SUPPLY BY PUMP AND COUNTER (FULL HOSE OR EMPTY HOSE).

B) SUPPLY BY EFFECT OF GRAVITY WITH COUNTER (EMPTY HOSE).

C) DIRECT SUPPLY WITHOUT COUNTER (WITH OR WITHOUT PUMP), EMPTYING AND FILLING OF THE TANK WITHOUT PASSING THROUGH THE COUNTER.

(SCHEMA OMITTED)

SCHEMA TEXT S 4

(SCHEMA OMITTED)

R 1 = TWO-WAY STEP VALVE THAT ALLOWS COUNTER SUPPLIES, NON-COUNTER SUPPLIES, EMPTYING AND FILLING OF THE TANK WITHOUT PASSING THROUGH THE COUNTER. THIS KEY IS OPTIONAL. IT CAN BE REPLACED BY A DIRECT CONNECTION.

P = BOMBA. THE PUMP MAY BE REVERSIBLE. IN SUCH A CASE, AN ANTI-RETURN VALVE MUST BE ADDED BETWEEN THE R 2 KEY AND THE GAS SEPARATOR SG.

B = CONFIGURATION

() OPTIONAL, WHICH ALLOWS THE SUPPLY BY EFFECT OF THE FORCE OF GRAVITY PASSING THROUGH THE COUNTER (EMPTY HOSE). THIS DERIVATION WILL ONLY BE AUTHORIZED WHEN THE R 1 KEY DOES NOT EXIST

R 2 = TWO-WAY STEP-KEY, OPTIONAL, THAT ENABLES DIRECT NON-COUNTER SUPPLIES.

F = FILTER. THE FILTER MAY BE PROVIDED WITH A FLUSH KEY.

SG = GAS SEPARATOR ACCORDING TO POINT 1.6.2.1.4. THE LEVEL OF THE LIQUID IN THE GAS SEPARATOR MUST BE ABOVE THE LEVEL IN THE COUNTER.

CAR = ANTI-RETURN VALVE TO PREVENT THE PASSAGE OF GASES (WHEN THE SUPPLY IS PERFORMED BY EMPTY HOSE).

C = CONTACT.

M = TAKE FOR MANDATORY MANOMETER ONLY WHEN B.

THIS MANOMETRIC INTAKE ALLOWS TO CHECK, DURING THE PRIMITIVE VERIFICATION, THAT THE PRESSURE IN THE COUNTER IS AT LEAST EQUAL TO THE ATMOSPHERIC PRESSURE DURING THE SUPPLIES DUE TO GRAVITY.

AT = OUTPUT TO THE ATMOSPHERE, AUTOMATIC OR MANUAL. WHEN SHUNT B EXISTS, THIS OUTLET TO THE ATMOSPHERE MUST BE AUTOMATIC AND THE SECTION SUFFICIENT TO ENSURE AT THE COUNTER A PRESSURE AT LEAST EQUAL TO THE ATMOSPHERIC PRESSURE.

VM = MANEUVER VALVE.

I AND II = SUPPLY DEVICE VARIANTS:

VARIANT I = EMPTY HOSE,

VARIANT II = COMBINATIONS OF A FULL HOSE AND AN EMPTY HOSE.

CL = ANTIRETURN valve.

V 1 = OVERFLOW VIEWER.

V 2 = VIEWER AS DEFINED IN PARAGRAPH 1.1.8, WHICH MEETS THE GAS INDICATOR FUNCTION AT THE SAME TIME.

FL 1 = HOSE FULL ON ROLLER.

CLA = VALVE TO PREVENT EMPTYING OF THE FILLED HOSE.

R 3 = DEVICE THAT ALLOWS THE SUPPLIES TO BE DONE EITHER BY A FULL HOSE OR BY AN EMPTY HOSE.

THIS DEVICE MUST BE IN ACCORDANCE WITH THE FIRST PARAGRAPH OF POINT 1.10.1 AND THE SECOND PARAGRAPH OF PARAGRAPH 2.2.4 ABOVE.

SCHEMA S 5

THE MEASUREMENT SYSTEM INCLUDES A PUMP, A GAS EXTRACTOR AND ONE OR TWO FULL HOSES

ALLOWS ONLY PUMP AND COUNTER SUPPLIES (HOSE FILLED).

(SCHEMA OMITTED)

SCHEMA TEXT S 5

IF THE TANK HAS SEVERAL COMPARTMENTS, THE MEASUREMENT SYSTEM MUST BE DIRECTLY AND PERMANENTLY CONNECTED, WITHOUT THE MEDIATION OF THE COLLECTOR PIPE, TO A WELL DEFINED COMPARTMENT.

A = ANTI-SWIRL DEVICE.

V = VALVE OF THE TYPE , WITHOUT INTERMEDIATE REGULATION, WHICH MAKES ALL OPPOSITION TO THE PUMP ASPIRATION PRACTICALLY IMPOSSIBLE.

M = PRESSURE GAUGE TO CHECK THAT THE PRESSURE AT THE PUMP INLET IS NOT LOWER THAN THE ATMOSPHERIC PRESSURE.

P = BOMBA.

F = FILTER.

A FLUSH KEY WILL BE AUTHORIZED ONLY IF YOU HAVE AN ANTI-RETURN VALVE THAT PREVENTS GAS FROM BEING INTRODUCED INTO THE MEASUREMENT SYSTEM.

PG = GAS EXTRACTOR. TWO VARIANTS SHALL BE AUTHORISED FOR THE GAS EVACUATION DEVICE: T 1 AND T 2

T 1 = DIRECT CONNECTION BETWEEN THE GAS EXTRACTOR AND THE CISTERN. IN SUCH A CASE, THE PIPE MUST FLOW INTO THE TANK, ALONG THE WALL, TO FACILITATE THE SEPARATION OF LIQUID PARTICLES AND GASES.

T 2 = CONNECTION OF THE GAS EXTRACTOR TO THE CISTERN BY MEANS OF A RECOVERY VESSEL OF THE LIQUID PARTICLES DRAGGED BY THE GASES.

C = CONTACT.

VM = MANEUVER VALVE.

CL = ANTIRETURN valve.

FL 1 = HOSE FULL ON ROLLER.

FL 2 = SECOND HOSE FULL, OPTIONAL AND VERY SHORT, TO ALLOW LARGE FLOW SUPPLIES.

CLA = VALVE TO PREVENT EMPTYING OF THE FILLED HOSE.

R = DEVICE THAT, WHEN THE MEASUREMENT SYSTEM HAS TWO HOSES, ALLOWS THE SUPPLIES TO BE MADE BY ONE OR THE OTHER OF THE TWO HOSES. THE DEVICE MUST BE IN ACCORDANCE WITH THE FIRST PARAGRAPH OF POINT 1.10.1 AND THE SECOND PARAGRAPH OF POINT 2.2.4.

SCHEMA S 6

THE MEASUREMENT SYSTEM INCLUDES A GAS SEPARATOR COMBINED WITH THE POWER PUMP, ONE OR TWO FULL HOSES, OR AN EMPTY HOSE, OR A FULL HOSE AND AN EMPTY HOSE

ALLOWS: A) PUMP AND COUNTER SUPPLY (FULL HOSE OR EMPTY HOSE).

B) THE DIRECT SUPPLY WITH OR WITHOUT A PUMP, WITHOUT PASSING THROUGH THE COUNTER; THE EMPTYING AND FILLING OF THE TANK, WITHOUT PASSING THROUGH THE COUNTER.

(SCHEMA OMITTED)

SCHEMA TEXT S 6

R 1 = TWO-WAY STEP KEY THAT ALLOWS COUNTER SUPPLIES, COUNTER-FREE SUPPLIES, EMPTYING AND FILLING OF THE TANK WITHOUT PASSING THROUGH THE COUNTER.

THIS KEY IS OPTIONAL. IT CAN BE REPLACED BY A DIRECT CONNECTION.

F = FILTER. IT CAN BE PROVIDED WITH A FLUSH KEY.

SGP = GAS SEPARATOR COMBINED WITH THE POWER PUMP AS DESCRIBED IN THE FIRST PARAGRAPH OF POINT 1.6.2.1.2. THIS SUBSYSTEM SHALL COMPLY WITH THE REQUIREMENTS OF POINT 1.6.2.1.4. THE APPROVAL OF A MODEL OR, WHERE APPROPRIATE, THE APPROVAL OF THE EEC MODEL SHALL BE GRANTED.

CL 1 = ANTIRETURN valve. THIS VALVE CAN BE POSITIONED AFTER THE COUNTER.

R 2 = TWO-WAY STEP-KEY, OPTIONAL, THAT ENABLES DIRECT, NON-COUNTER SUPPLIES.

C = CONTACT.

I, II, AND III = SUPPLY DEVICE VARIANTS:

VARIANT I = ONE OR TWO FULL HOSES,

VARIANT II = EMPTY HOSE,

VARIANT III = COMBINATIONS OF A FULL HOSE AND AN EMPTY HOSE.

VM = MANEUVER VALVE.

V 1 = OVERFLOW VIEWER.

V 2 = VIEWFINDER AS DEFINED IN PARAGRAPH 1.1.8 AND WHICH ALSO COMPLIES WITH THE FUNCTION OF A GAS INDICATOR.

FL 1 = HOSE FULL.

FL 2 = SECOND HOSE FULL, OPTIONAL AND VERY SHORT, ALLOWING LARGE FLOW SUPPLIES.

CLA = VALVE THAT PREVENTS EMPTYING OF THE FILLED HOSE.

CL 2 = ANTIRETURN valve.

AT = AUTOMATIC OR MANUAL ATMOSPHERE OUTPUT.

R 3 = DEVICE THAT, WHEN THE MEASUREMENT SYSTEM INCLUDES TWO SUPPLY PATHS, ENABLES THE SUPPLY BY EITHER OF THESE TWO PATHS. THIS DEVICE MUST BE IN ACCORDANCE WITH THE FIRST PARAGRAPH OF POINT 1.10.1 AND THE SECOND PARAGRAPH OF POINT 2.2.4.

SCHEMA S 7

THE MEASUREMENT SYSTEM INCLUDES A PUMP, A SPECIAL GAS EXTRACTOR, ONE OR TWO FULL HOSES, OR AN EMPTY HOSE, OR A FULL HOSE AND AN EMPTY HOSE

ALLOWS: A) PUMP AND COUNTER SUPPLY (FULL HOSE OR EMPTY HOSE).

B) THE SUPPLY BY EFFECT OF GRAVITY WITH COUNTER (EMPTY HOSE).

C) THE DIRECT SUPPLY WITH OR WITHOUT A PUMP, WITHOUT PASSING THROUGH THE COUNTER; THE EMPTYING AND FILLING OF THE TANK, WITHOUT PASSING THROUGH THE COUNTER.

(SCHEMA OMITTED)

SCHEMA TEXT S 7

WHEN THE TANK HAS SEVERAL COMPARTMENTS AND IT IS POSSIBLE TO USE A COLLECTOR PIPE, THE BOTTOM VALVES OF THE COMPARTMENTS AND THE VALVES LOCATED IN THE SUCTION LINE MUST BE OF TYPE

. PIPES BETWEEN COMPARTMENTS AND MEASURING SYSTEM SHALL ENSURE PERMANENT CONNECTIONS.

A = ANTI-SWIRL DEVICE.

R 1 = TWO-WAY STEP KEY THAT ALLOWS COUNTER SUPPLIES, COUNTER-FREE SUPPLIES, EMPTYING AND FILLING OF THE TANK WITHOUT PASSING THROUGH THE COUNTER.

THIS KEY IS OPTIONAL. IT CAN BE REPLACED BY A DIRECT CONNECTION.

P = BOMBA. THE PUMP MAY BE REVERSIBLE. IN SUCH A CASE, AN ANTI-RETURN VALVE MUST BE ADDED BETWEEN THE KEY R 2 AND THE SPECIAL GAS EXTRACTOR PGS.

B = OUTPUT (), OPTIONAL, WHICH ALLOWS THE SUPPLIES BY EFFECT OF GRAVITY PASSING THROUGH THE COUNTER (EMPTY HOSE). THIS DERIVATION WILL ONLY BE AUTHORIZED IF THE R 1 KEY DOES NOT EXIST

R 2 = TWO-WAY STEP-KEY, OPTIONAL, THAT ENABLES DIRECT NON-COUNTER SUPPLIES.

F = FILTER.

YOU CAN ONLY INCORPORATE A FLUSH KEY, IF IT INCLUDES AN ANTI-RETURN VALVE THAT PREVENTS GAS FROM ENTERING THE MEASUREMENT SYSTEM.

PGS = SPECIAL GAS EXTRACTOR, AS DEFINED IN POINT 1.1.5.

V 1 = VIEWER OF THE GAS SPECIAL EXTRACTOR.

T 1, T 2, T 3 = VARIANTS AUTHORIZED FOR THE GAS EVACUATION DEVICE.

T 1 = EMPLOYING A RECOVERY VESSEL FROM LIQUID PARTICLES DRAGGED BY GASES,

T 2 = RETURN TO TANKER,

T 3 = EMPLOYMENT OF AN EVACUATION VALVE.

C = CONTACT.

VA = VALVE WHOSE CLOSURE IS AUTOMATICALLY SECURED BY THE SPECIAL GAS EXTRACTOR, AS SOON AS THE PRESSURE IS INSUFFICIENT TO PREVENT ANY VAPORIZATION IN THE COUNTER OR WHEN A BAG OF GAS APPEARS IN THE EXTRACTOR. AIR. IN ADDITION, THIS VALVE SHALL BE CLOSED IN THE EVENT OF FAILURE OF ITS CONTROL SYSTEM.

I, II, AND III = SUPPLY DEVICE VARIANTS:

VARIANT I = ONE OR TWO FULL HOSES,

VARIANT II = EMPTY HOSE,

VARIANT III = COMBINATIONS OF A FULL HOSE AND AN EMPTY HOSE.

VM = MANEUVER VALVE.

THE AUTOMATIC VALVE AND THE MANEUVER VALVE MAY BE INTEGRATED INTO A SPECIAL VALVE THAT PERFORMS BOTH FUNCTIONS. IN SUCH A CASE, THE TWO FUNCTIONS SHALL BE INDEPENDENT OF EACH OTHER.

IN VARIANTS II AND III, WHICH INCLUDE VIEWFINDER V 3, THE SPECIAL VALVE MUST BE INSTALLED AFTER THE VIEWFINDER V 3

CL = ANTIRETURN valve.

V 2 = OVERFLOW VIEWER.

V 3 = VIEWFINDER AS DEFINED IN PARAGRAPH 1.1.8, ALSO PERFORMS THE FUNCTION OF A GAS INDICATOR.

FL 1 = HOSE FULL ON ROLLER.

FL 2 = SECOND HOSE FULL, OPTIONAL AND VERY SHORT, ALLOWING LARGE FLOW SUPPLIES.

CLA = VALVE THAT PREVENTS EMPTYING OF THE FILLED HOSE.

AT = AUTOMATIC OR MANUAL ATMOSPHERE OUTPUT.

R 3 = DEVICE THAT, WHEN THE MEASUREMENT SYSTEM HAS TWO SUPPLY ROUTES, ALLOWS THE SUPPLIES TO BE MADE BY EITHER OF THESE TWO PATHS. THIS DEVICE MUST COMPLY WITH THE FIRST PARAGRAPH OF POINT 1.10.1 AND THE SECOND PARAGRAPH OF PARAGRAPH 2.2.4 ABOVE.

SCHEMA S 8

THE MEASUREMENT SYSTEM INCLUDES A PUMP, A THREE-WAY STEP KEY, A SPECIAL GAS EXTRACTOR, ONE OR TWO FULL HOSES, OR AN EMPTY HOSE, OR A FULL HOSE AND AN EMPTY HOSE

ALLOWS: A) PUMP AND COUNTER SUPPLY (FULL HOSE OR EMPTY HOSE).

B) THE SUPPLY BY EFFECT OF GRAVITY WITH COUNTER (EMPTY HOSE).

C) THE DIRECT SUPPLY WITH OR WITHOUT A PUMP, WITHOUT PASSING THROUGH THE COUNTER; THE EMPTYING AND FILLING OF THE TANK, WITHOUT PASSING THROUGH THE COUNTER.

(OMITTED BOX)

SCHEMA TEXT S 8

WHEN THE TANK INCLUDES SEVERAL COMPARTMENTS AND IT IS POSSIBLE TO USE A COLLECTOR PIPE, THE BOTTOM VALVES OF THE COMPARTMENTS AND THE VALVES LOCATED IN THE SUCTION CONDUCTOR MUST BE OF THE TYPE . THE TUBERIAS BETWEEN COMPARTMENTS AND MEASURING SYSTEM SHALL ENSURE PERMANENT CONNECTIONS.

A = ANTI-SWIRL DEVICE.

P = BOMBA.

RO = THREE-WAY STEP KEY THAT, COMBINED WITH STEP R 1 AND R 2 KEYS, ALLOWS YOU TO PERFORM THE FOLLOWING OPERATIONS:

1.

PUMP SUPPLY WITHOUT COUNTER OR COUNTER (FULL HOSE OR EMPTY HOSE).

2. SUPPLY BY EFFECT OF GRAVITY WITHOUT COUNTER OR COUNTER (EMPTY HOSE), EMPTYING AND FILLING OF THE TANK.

3. FILLING THE CISTERN BY MEANS OF PUMP P.

R 1 = THIS TWO-WAY STEP KEY IS OPTIONAL. IT CAN BE REPLACED BY A DIRECT CONNECTION.

F = FILTER.

A FLUSH-PASS KEY SHALL BE PERMITTED ONLY IF IT INCLUDES AN ANTI-RETURN VALVE THAT PREVENTS THE INTRODUCTION OF GASES INTO THE MEASUREMENT SYSTEM.

CL 1 = ANTIRETURN valve.

PGS = SPECIAL GAS EXTRACTOR AS DEFINED IN POINT 1.1.5.

V 1 = VIEWER OF THE GAS SPECIAL EXTRACTOR.

T 1, T 2, T 3 = AUTHORIZED VARIANTS FOR THE GAS EVACUATION DEVICE:

T 1 = EMPLOYING A CONTAINER FOR RECOVERY OF LIQUID PARTICLES DRAGGED BY GASES,

T 2 = RETURN TO TANKER,

T 3 = EMPLOYMENT OF AN EVACUATION VALVE.

C = CONTACT.

VA = VALVE WHOSE CLOSURE IS AUTOMATICALLY SECURED BY THE SPECIAL GAS EXTRACTOR AS SOON AS THE PRESSURE IS INSUFFICIENT TO PREVENT ANY VAPORIZATION IN THE COUNTER OR WHEN AN AIR BAG APPEARS IN THE EXTRACTOR. IN ADDITION, THIS VALVE SHALL BE CLOSED IN THE EVENT OF FAILURE OF ITS CONTROL SYSTEM.

I, II, III = SUPPLY DEVICE VARIANTS:

VARIANT I = ONE OR TWO FULL HOSES,

VARIANT II = EMPTY HOSE,

VARIANT III = COMBINATIONS OF A FULL HOSE AND AN EMPTY HOSE.

VM = MANEUVER VALVE.

THE AUTOMATIC VALVE AND THE MANEUVER VALVE MAY BE INTEGRATED INTO A SPECIAL VALVE THAT PERFORMS BOTH FUNCTIONS. IN SUCH A CASE, THE TWO FUNCTIONS SHALL BE INDEPENDENT OF EACH OTHER.

IN VARIANTS II AND III WHICH INCLUDE VIEWFINDER V 3, SUCH SPECIAL VALVE SHALL BE LOCATED AFTER VIEWFINDER V 3

CL 2 = ANTIRETURN valve.

V 2 = OVERFLOW VIEWER.

V 3 = VIEWFINDER AS DEFINED IN PARAGRAPH 1.1.8, ALSO PERFORMING THE FUNCTION OF A GAS INDICATOR.

FL 1 = HOSE FULL ON ROLLER.

FL 2 = SECOND HOSE FULL, OPTIONAL AND VERY SHORT, ALLOWING LARGE FLOW SUPPLIES.

AT = AUTOMATIC OR MANUAL ATMOSPHERE OUTPUT.

R 2 = DEVICE THAT, WHEN THE SYSTEM HAS TWO SUPPLY ROUTES, ALLOWS SUPPLIES TO BE MADE BY EITHER OF THESE TWO PATHS. THE DEVICE SHALL COMPLY WITH THE PROVISIONS OF THE FIRST PARAGRAPH OF POINT 1.10.1 AND THE SECOND PARAGRAPH OF POINT 2.2.4.

SCHEMA S 9

THE MEASUREMENT SYSTEM INCLUDES A PUMP, A GAS SEPARATOR, A PRESSURE MAINTENANCE VALVE, AND A FULL HOSE

ALLOWS:

A) PUMP AND COUNTER SUPPLY (HOSE FILLED).

B) THE SUPPLY WITH OR WITHOUT A PUMP, WITHOUT PASSING THROUGH THE COUNTER, THE EMPTYING AND FILLING OF THE TANK WITHOUT PASSING THROUGH THE COUNTER.

(SCHEMA OMITTED)

SCHEMA TEXT S 9

R 1 = TWO-WAY STEP KEY THAT ALLOWS FOR COUNTER SUPPLIES, EMPTYING AND FILLING OF THE CISTERN WITHOUT PASSING THROUGH THE COUNTER. THIS STEP KEY IS OPTIONAL. IT MAY BE REPLACED BY A DIRECT CONNECTION.

P = BOMBA.

B = ADJUSTABLE SHUNT CONNECTED TO THE CISTERN.

R 2 = TWO-WAY STEP-KEY, OPTIONAL, THAT ENABLES DIRECT NON-COUNTER SUPPLIES.

CL 1 = ANTIRETURN VALVE PRESCRIBED IN PARAGRAPH 2.4.1. IT MAY ALSO BE LOCATED BETWEEN THE FILTER AND THE GAS SEPARATOR. F = FILTER.

SG = GAS SEPARATOR ACCORDING TO POINT 1.6.2.1.4, OR WITH THE SECOND PARAGRAPH OF PARAGRAPH 2.4.3.1. THE GAS EVACUATION DEVICE IS CONNECTED TO THE GAS PHASE OF THE TANK. FOR SAFETY REASONS, A VALVE MAY BE PLACED ON THAT DEVICE; IN SUCH A CASE, IT MUST BE INSTALLED BETWEEN THE TANK AND THE BYPASS TO THE VALVE .

C = CONTACT.

VAMP = AUTOMATIC PRESSURE MAINTENANCE VALVE, REGULATED TO MAINTAIN AN UPPER PRESSURE, AT LEAST IN 100 KPA, AT THE SATURATION VAPOR PRESSURE IN THE CISTERN.

VM = MANEUVER VALVE.

CL 2 = ANTIRETURN valve.

Z = GASEOUS PHASE PIPE WHICH CAN ONLY BE USED FOR THE FILLING OF THE TRUCK TANK AND FOR THE REPLACEMENT OF THE PRODUCT DURING THE VERIFICATION OF THE MEASUREMENT SYSTEM.

TH = THERMOMETER. THIS THERMOMETER MUST BE PLACED CLOSE TO THE COUNTER, EITHER ON THE GAS SEPARATOR OR ON THE ENTRY OR EXIT OF THE COUNTER.

M = MANDATORY GAUGE.

MO = OPTIONAL GAUGES.

NOTE:

(A) WITH A VIEW TO THE APPLICATION OF THE REQUIREMENTS REFERRED TO IN POINT 2.4.5, THE PROHIBITION ON CONNECTING THE GASEOUS PHASES OF THE TANKER WITH THE TANK SHALL BE INDICATED ON A PLATE IN A PERFECTLY LEGIBLE MANNER. CUSTOMER TANKER.

B) SAFETY VALVES SHALL BE PERMITTED; WHERE SUCH VALVES ARE PRESENT, THEY MUST COMPLY WITH THE REQUIREMENTS OF PARAGRAPH 2.4.6.