Machine Translation of "RS 941.201 DFJP Order of 19 March 2006 on length measuring instruments" (Switzerland)

Art. 1 Purpose

This Order fixes:

A.: Requirements for measuring instruments of length;
B.: The procedures for placing these measuring instruments on the market;
C.: Procedures to maintain the stability of measurement of these measuring instruments.

Art. 2 Scope of application

The following are subject to the provisions of this order:

A.: Measures of length;
B.: Measuring instruments of length;
C.: Multidimensional measuring instruments;
D.: Forest compass;
E.: Facilities for measuring tree trunks;
F.: Level gauges;
G.: Vehicle and vehicle profile measurement facilities.

Art. 3 Definitions

For the purposes of this order:

A.: Materialized length measurement: A measurement instrument with scale benchmarks whose distances are given in units of legal length;
B.: Length measurement instrument: An instrument for determining the length of rope-like materials such as textiles, tapes and cables during movement of the product to be measured;
C.: Multidime measurement instrument N Sional: An instrument for measuring the edge (length, height, width) of the smallest rectangular parallelepiped enclosing a product;
D.: Forest compass: Instrument for measuring the diameter of logs and logs;
E.: Tree trunks metering installation: An electronic measuring instrument for the determination of the volume of logs and logs by measuring one or more diameters and-if not only for the measurement of fixed-length logs-of length during a Movement motion of the product to be measured;
F.: Level gauge: An instrument for automatic measurement of liquid level in relation to a reference height in a fixed storage tank;
G.: Vehicle and vehicle profile measurement facilities: An electronic measuring instrument for the determination of the height, width and length of heavy-duty vehicles during their controlled passage.

Art. 4 Terms of Reference

The reference temperature is 20 ° C, unless otherwise specified by the manufacturer.

Art. 5 Essential requirements

Materialized measures of length must meet the essential requirements set out in Schedule 1 of the Order on Measurement Devices and Schedule 1 of this Order.

¹ The conformity of the measures materialized in length with the essential requirements referred to in Art. 5 may be evaluated and certified at the manufacturer's choice in accordance with one of the following procedures set out in Schedule 2 of the Ordinance on Measuring Instruments:

A.: Type examination (module B) completed by the declaration of conformity to the type on the basis of quality assurance of the manufacturing process (module D);
B.: Declaration of conformity on the basis of quality assurance of the manufacturing process (module D1);
C.: Declaration of conformity on the basis of product verification (F1 module);
D.: Declaration of conformity on the basis of unit verification (module G);
E.: Declaration of conformity on the basis of comprehensive quality assurance (module H).

² If the chosen procedure provides that a copy of the declaration of conformity is sufficient for lots and sets, this provision shall apply to measures of length.

Art. 7 Essential requirements

¹ The length measuring instruments shall meet the essential requirements set out in Annex 1 of the Ordinance on Measuring Instruments and Annex 2, let. A and B of this order.

² Multidimensional measuring instruments shall meet the essential requirements set out in Annex 1 of the Ordinance on Measuring Instruments and Annex 2, let. A and C of this order.

Art. 8 Marketing Procedures

¹ The conformity of mechanical or electromechanical measuring instruments with the essential requirements referred to in Art. 7 may be evaluated and certified at the manufacturer's choice in accordance with one of the following procedures set out in Schedule 2 of the Ordinance on Measuring Instruments:

A.: Type examination (module B) completed by the declaration of conformity to the type on the basis of quality assurance of the manufacturing process (module D);
B.: Type examination (module B) completed by the declaration of conformity to the type on the basis of quality assurance of the inspection and testing of the finished product (module E);
C.: Type examination (module B) completed by the declaration of conformity to the type on the basis of a product verification (module F);
D.: Declaration of conformity on the basis of quality assurance of the manufacturing process (module D1);
E.: Declaration of conformity on the basis of quality assurance of the inspection and testing of the finished product (module E1);
F.: Declaration of conformity on the basis of product verification (F1 module);
G.: Declaration of conformity on the basis of unit verification (module G);
H.: Declaration of conformity on the basis of comprehensive quality assurance (module H);
I.: Declaration of conformity on the basis of comprehensive quality assurance and design control (module H1).

² The compliance of electronic measuring instruments or instruments that use software with the essential requirements referred to in s. 7 may be evaluated and certified at the manufacturer's choice in accordance with one of the following procedures set out in Schedule 2 of the Ordinance on Measuring Instruments:

A.: Type examination (module B) completed by the declaration of conformity to the type on the basis of quality assurance of the manufacturing process (module D);
B.: Type examination (module B) completed by the declaration of conformity to the type on the basis of a product verification (module F);
C.: Declaration of conformity on the basis of unit verification (module G);
D.: Declaration of conformity on the basis of comprehensive quality assurance and design control (module H1).

Art. Procedures for maintaining measurement stability

¹ Mechanical or electromechanical measuring instruments shall be subject to subsequent verification in accordance with Annex 7, c. 1, of the Ordinance on Measuring Instruments, carried out every six years by a cantonal audit office.

² For electronic measuring instruments or instruments that employ software, the user can choose one of the following two procedures:

A.: Subsequent verification in accordance with Annex 7, c. 1, of the Ordinance on Measuring Instruments, carried out every two years by a cantonal audit office;
B.: Subsequent verification in accordance with Annex 7, c. 1, of the order on measuring instruments, carried out every four years by a cantonal audit office and supplemented by a user-control procedure in accordance with Annex 7, c. 5, of the order on measuring instruments.

Art. 10 Essential requirements

The forest compass shall meet the essential requirements set out in Schedule 1 of the Ordinance on Measuring Instruments and Schedule 3 of this Order.

Art. 11 Marketing Procedures

¹ The mechanical forest compass has general approval. They are subject to an initial verification according to Annex 5 of the Ordinance on Measuring Instruments.

² The electronic forest compass is subject to regular approval and an initial verification according to Annex 5 of the Ordinance on Measuring Instruments.

Art. 12 Procedures for maintaining measurement stability

¹ For mechanical foresters, the verification is valid for an unlimited period.

² The electronic forest compass shall be subject to further verification in accordance with Annex 7, c. 1, of the Ordinance on Measuring Instruments, carried out every six years by a cantonal audit office.

Art. 13 Essential requirements

The measuring facilities for tree trunks shall meet the essential requirements set out in Schedule 1 of the Order on Measurement Devices and Schedule 4 of this Order.

Art. 14 Marketing Procedures

The measurement facilities for tree trunks are subject to regular approval and initial verification according to Schedule 5 of the Measurement Instrument Order.

Art. 15 Procedures for maintaining measurement stability

The facilities for measuring tree trunks are subject to further verification in accordance with Annex 7, c. 1, of the Ordinance on Measuring Instruments, carried out every two years by a cantonal audit office. The user shall also apply a control procedure in accordance with Annex 7, c. 5, of the order on measuring instruments.

Art. 16 Essential requirements

Level gauges must meet the essential requirements set out in Schedule 1 of the Measurement Instrument Order and Schedule 5 of this Order.

Art. 17 Marketing Procedures

Level gauges are subject to regular approval and initial verification according to Schedule 5 of the Measurement Instrument Order.

Art. 18 Procedures for maintaining measurement stability

For level gauges, the user can choose one of two procedures:

A.: Subsequent verification in accordance with Annex 7, c. 1, of the Ordinance on Measuring Instruments, carried out every two years by a cantonal audit office;
B.: Subsequent verification in accordance with Annex 7, c. 1, of the order on measuring instruments, carried out every four years by a cantonal audit office and supplemented by a user-control procedure in accordance with Annex 7, c. 5, of the order on measuring instruments.

Art. 19 Essential requirements

The vehicle and vehicle profile measurement facilities shall meet the essential requirements set out in Schedule 1 of the Order on Measurement Devices and Schedule 6 of this Order.

Art. Marketing Procedures

Vehicle and vehicle profile measurement facilities are subject to regular approval and initial verification in accordance with Annex 5 of the Ordinance on Measurement Instruments.

Art. Procedures for maintaining measurement stability

The measurement installations for vehicle and vehicle profiles shall be subject to further verification in accordance with Annex 7, c. 1, of the Ordinance on Measuring Instruments, carried out every two years by a cantonal audit office. The user shall also apply a control procedure in accordance with Annex 7, c. 5, of the order on measuring instruments.

Art.

The user assumes the responsibility specified in s. 21, para. 1, of the order on measuring instruments, but also the order:

A.: Ensure compliance with the manufacturer's instructions for the assembly and commissioning of the measuring instrument;
B.: Maintain the measuring instrument in good condition and periodically review the parts subject to wear, aging or fouling.

Art.

The maximum permissible errors applicable in the challenge of results of measures within the meaning of Art. 29, para. 1, of the order on measuring instruments or in the official control of a measuring instrument carried out outside the scope of the audit are:

A.: Those set out in Schedules 1, 2, 5 and 6 of this order in the case of length measuring devices under sections 2, 3, 6 and 7;
B.: Equal to twice those set out in Schedule 3 of this order in the case of a forest compass under Division 4;
C.: Equal to one and a half times those set out in Schedule 4 of this order in the case of tree trunks metering installations under section 5.

Art. 24 Repeal of the law in force

The order of 8 April 1991 on measuring instruments of length ¹ Is repealed.

¹ [RO 1991 1306, 1997 2761 hp. II let. A]

Art. 25 Transitional provisions

¹ Measurement instruments of length verified prior to the coming into force of this order may continue to be verified. At the time of the subsequent verification, they must comply with the maximum tolerated errors in accordance with the previous provisions.

² The length measurement instruments approved under the earlier right may be put into service and verified initially in accordance with Annex 5, c. 2, of the order on instruments of measurement for ten years from the coming into force of this order. After the expiry of these ten years, they may still be verified at a later date.

³ The facilities for measuring tree trunks placed on the market prior to the coming into force of this order may be used without verification for three years after they are commissioned or revised.

Art. 26 Entry into force

This Order comes into force on October 30, 2006.

(art. 5)

Specific requirements for materialized measures of length

1	Terms of Reference

1.1: For ribbons with a length greater than or equal to 5 m, the maximum tolerated errors (EMT) shall be observed when a pulling force of 50 N or other force values specified by the manufacturer and marked accordingly on the tape Are applied; in the case of rigid or semi-rigid measurements, no traction force is required.
1.2: A different reference temperature of 20 ° C shall be marked on the measure by the manufacturer.

2

EMT

2.1

EMT (positive or negative in mm), between two non-consecutive scale marks are (a + b - L ), where:

-: L Is the value of the rounded length to the nearest metre, in m;
-: A and b are given in Table 1 below.

When a terminal interval is limited by a surface, the LTRs for any distance starting at this point are increased by the c value indicated in Table 1.

Table 1

Accuracy Class	A (mm)	B	C (mm)
I	0.1	0.1	0.1
II	0.3	0.2	0.2
III	0.6	0.4	0.3
D: special class for immersion ribbons ⁽¹⁾ Up to 30 m ⁽²⁾	1.5	Zero	Zero
S: special class for measuring tanks For each 30 m in length when the tape is pressed on a flat surface	1.5	Zero	Zero


⁽¹⁾	Applies to tape/probe combinations.
⁽²⁾	If the nominal length of the tape is greater than 30 m, the TRMS can be increased by 0.75 mm for each 30 m of tape length.

2.2: Immersion ribbons may also be classes I or II, in which case, for any length between two scale marks, one on the probe and the other on the tape, the EMT shall be ± 0.6 mm when the application of the formula gives a value Less than 0.6 mm.
The maximum permissible error (positive or negative) for the length between two consecutive scale marks and the maximum tolerated difference between the lengths of two consecutive intervals are shown in Table 2 below.

Table 2

Interval i Length	Maximum tolerated error or maximum tolerance in mm, depending on the accuracy class
	I	II	III
I ≤ 1 mm	0.1	0.2	0.3
1 mm < i ≤ 1 cm	0.2	0.4	0.6

In the case of a bending metre, the joint between two elements shall not cause any errors, additional to those referred to above, exceeding 0.3 mm for Class II and 0.5 mm for Class III.

3	Materials

3.1: The materials used for the length measurements shall be such that the length variations due to temperature variations up to ± 8 ° C relative to the reference temperature do not exceed the maximum permissible error. This rule does not apply to Class S and Class D measures where the manufacturer provides that corrections for thermal expansion shall be made to the readings found, if necessary.
3.2: Measurements made with materials whose dimensions can significantly change as a result of a wide range of relative air humidity can only be included in Class II or III.

4	Markings

The nominal value must be marked on the measure. The millimetre scales must be numbered every centimetre, and measurements with a scale interval greater than 2 cm must have all their numbered landmarks.

State 1 ^Er January 2013

(art. 7)

Specific requirements for length measuring instruments and multidimensional measuring instruments

A Common requirements for all length measuring instruments and dimensional measuring instruments

1	Electromagnetic immunity

1.1

The effect of electromagnetic disturbance on a length measuring instrument or dimensional measuring instrument shall be such:

-: That the variation of the measurement result does not exceed the critical variation value defined in c. 1.2;
-: It is impossible to measure;
-: The measurement result is momentary variations that cannot be interpreted, stored or transmitted as a measurement result, or
-: That the measurement result is sufficiently large to be noticed by all those who are interested in the measurement result.

1.2

The critical variation value is equal to a step.

B Length-measuring instruments

1	Characteristics of the product to be measured

The textiles are characterized by the characteristic K factor. This factor, which takes into account the extensibility and weight per unit area of the measured product, is defined by the following formula:
K = å - ( G _A + 2.2 N/m ²), where å is the relative extension of a sample of fabric 1 m wide to a pulling force of 10 N and where G _A Is the weight per unit area of a tissue sample in N/m ².

2	Operating Conditions

2.1: The dimensions and factor K, if applicable, shall be within the limits specified by the manufacturer for the instrument. The K-factor areas are shown in Table 1:

Table 1

Group	K Range	Product to be measured
I	0 < K < 2 × 10 ^-2 N/m ²	Low extensibility
II	2 × 10 ^-2 N/m ² < K < 8 × 10 ^-2 N/m ²	Average extensibility
III	8 × 10 ^-2 N/m ² < K < 24 × 10 ^-2 N/m ²	High extensibility
IV	24 × 10 ^-2 N/m ² < K	Very high extensibility

2.2: Where the product to be measured is not driven by the measuring instrument, the speed of the displacement shall be within the limits specified by the manufacturer for the instrument.
2.3: If the result of the measurement depends on the thickness, surface condition and presentation of the product (e.g. on a large drum or pile), the manufacturer specifies the corresponding limitations.

3	Maximum Tolerated Errors (EMT)

Instrument of measurement

Table 2

	Accuracy Class	EMT
	I	0.125 %, but not less than 0.005 L _M
	II	0.25 %, but not less than 0.01 L _M
	III	0.5 %, but not less than 0.02 L _M

Where L _M Is the minimum measurable length, that is, the smallest length specified by the manufacturer for which the device is intended to be used.
In the case of testing or testing, the length of the different types of materials should be measured using appropriate instruments (e.g., one metre tape). For this, the product to be measured must be placed on a suitable medium (e.g. a table) flat and without stretching.

4	Other requirements

The instrument must be able to measure the product in its unstretched state, depending on the extensibility for which the instrument is designed.

C Multidimensional Measuring Instruments

1	Operating Conditions

1.1: Scope: the dimensions of the product must be within the scope specified by the manufacturer for the device.
1.2: Minimum dimension: the lower limit of the minimum dimension for all values of the scale is indicated in Table 3.

Table 3

	Echelon (d)	Minimum dimension (lower limit)
	D ≤ 2 cm	10 d
	2 cm < d ≤ 10 cm	20 d
	10 cm < d	50 d

1.3: The rate of displacement of the product to be measured: the speed must be within the range specified by the manufacturer for the instrument.

2

EMT

EMT shall be ± 1.0 d.

State 1 ^Er January 2013

(art. 10)

Specific Requirements for Forest Compas

1	Metrological Characteristics

1.1: The forest compass used to measure the diameter of logs and logs consists of a straight-line rule with one end with a fixed perpendicular bracket as well as another bracket that can slide along the rule. The broad face of the rule has a division in centimetres.
1.2: The length of the brackets must be at least half the length of the rule. The movable bracket shall be constructed so as to slide without play and to have a soft friction on the ruler, regardless of the position. The movable bracket cannot, under a moderate effort of the hand, deviate more than 5 mm from its parallelism with the fixed bracket.
1.3: The rule must be divided into centimeters or millimeters, and all marks in centimeters must be encrypted.
1.4: The electronic forest compass should be displayed in centimetres. For verification, the reading of the values in millimetres must be possible.
1.5: When drawing up lists of wood using electronic forest compass, rounding rules, deductions for bark and quality deductions are to be considered taking into account the customs and customs of local timber trade.

2

EMT

2.1: The EMT for the rule and the distance of the gauged brackets are ± 2 mm.
2.2: The EMT for the difference between the gap of the points of the brackets and the base of their base is ± 2 mm.

State 1 ^Er January 2013

(art. 13)

Specific requirements for tree trunks metering installations

1	Metrological Characteristics

1.1: The determination of the diameter of the measured element is either by the establishment of the average diameter in the middle of the total length or by the determination of several mean diameters in the middle of different sections of the same length.
1.2: The diameter measurement system shall determine the average of two or three unique diameters located at 90 ° or 60 °, respectively, relative to each other for each measurement position.
1.3: To prevent falsification of values measured by branches or bark remnants, one must measure for each average diameter at least two measurement positions located in an area of 20 cm. The smallest diameter measured in this sector is considered to be the average diameter.
1.4: The length of the measured element is determined by the measurement system during the movement of movement of the element.
1.5: For the cross section of the element or sections of the measured element, the surface of a circle with the average diameter shall be taken into account.
1.6: For the volume of the element, the product of the cross section by the length of the measured element or the sum of the volumes of all sections is taken into account.
1.7: The resolution of the measured value for the diameter can not be worse than 5 mm and that for the length worse than 1 cm.
1.8: When drawing up lists of wood, rounding rules, deductions for bark and quality deductions are to be considered taking into account the customs and customs of local timber trade.
1.9: For tests or tests, the reading of unrounded values should be possible.

2	Operating Conditions

2.1: The accuracy and reliability of the measurement results shall be guaranteed for an ambient temperature between -15 ° C and +45 ° C.
2.2: The accuracy and reliability of the measurement results shall be guaranteed for a change in the power supply voltage between -15 % and +10 % of the rated voltage.
2.3: Measurement systems must be protected against parasitic light disturbances that could falsify the measurement result.

3	Maximum Tolerated Errors (EMT)

3.1

The TRAs for a single diameter amount to:

-: For each individual measure: ± 10 mm;
-: For the average of 10 to 20 individual measurements according to different situations of the same element: ± 2.5 mm.

3.2

TRMS for the measured length amount to ± 1 % of the measured length, but not less than 5 cm.

State 1 ^Er January 2013

(art. 16)

Specific requirements for level gauges

1	Metrological Characteristics

1.1: An automatic level gauger includes at least one liquid-level sensor element, a transmitter and an indicator device.
1.2: The scale of the indicator device shall not exceed 1 mm.
1.3: An automatic gauger may have several indicator devices, such as remote indications. These must be identified in an unambiguous manner with respect to the applicable gauge.
1.4: For the verification, an indication of the full height shall be available.

2	Operating Conditions

2.1

The accuracy and reliability of the measurement results shall be guaranteed for the specified operating conditions, which include:

-: Minimum and maximum temperatures of the liquid and medium above the liquid;
-: Minimum and maximum fluid pressures;
-: Liquid and medium characteristics above the liquid;
-: Minimum and maximum densities of liquid and medium above the liquid;
-: Maximum and minimum gauge capacity;
-: Ambient conditions.

2.2

Unless otherwise specified, the following values apply for maximum and minimum operating temperatures:

-: -25 ° C to +55 ° C for outside operation;
-: + 5 ° C to +40 ° C for operation indoors.

2.3

The accuracy and reliability of the measurement results shall be guaranteed for a change in the power supply voltage between -15 % and +10 % of the rated voltage.

3	Maximum Tolerated Errors (EMT)

The TRAs for the full height indication are as follows:

-: For the gauge prior to its installation on the tank, for the type examination and for the initial verification, generally performed on the manufacturing site: ± 1 mm.
-: For the gauge after its installation on the tank, for initial and subsequent verifications: ± 4 mm.

4	Normative document

The construction requirements and the metrological characteristics of the level gaugers shall be deemed to be observed if the gauge meets the requirements set out in the following International OIML Recommendation ¹:

-: International Recommendation OIML R 85:1998 "Automatic gauges for the measurement of liquid levels in storage tanks"

¹ OIML: International Organization of Legal Metrology. Information on OIML's international recommendations can be obtained from the Federal Institute of Metrology, 3003 Berne-Wabern.

State 1 ^Er January 2013

(art. 19)

Specific requirements for vehicle and vehicle profile measurement installations

1	Metrological Characteristics

1.1: A vehicle and vehicle profile measurement facility includes a device for the determination of the lateral profile (height, width) and another for the length of the vehicle during its controlled-speed crossing.
1.2: The longitudinal range of sections of profiles shall not exceed 2.5 cm.
1.3: The installation of measurement determines the maximum dimensions of vehicles in height, width and length. The stationary external parts of the vehicle according to Art. 38, para. 1 and 1 ^Bis, of the order of 19 June 1995 concerning the technical requirements for on-road vehicles (OETV) ¹ Must be identified and excluded from measurement results.
1.4: The scale of the indicator device shall not exceed 1.0 cm.
1.5: For the verification, an indication of the height, width and length measured continuously shall be available. For this purpose, the resolution of the specified values must not exceed 0.5 cm.

2	Operating Conditions

2.1: The accuracy and reliability of the measurement results shall be guaranteed for an ambient temperature between -20 ° C and +50 ° C and for a wind speed up to 60 km/h.
2.2: The accuracy and reliability of measurement results should be guaranteed in the event of rain or light snowfall.
2.3: In the event of unacceptable weather conditions, the false measures must be excluded.
2.4: The accuracy and reliability of the measurement results shall be guaranteed for a change in the power supply voltage between -15 % and +10 % of the rated voltage.
2.5: Measurement systems must be protected against parasitic light disturbances that could falsify the measurement result.
2.6: The dimensions of the vehicle shall be within the scope specified by the manufacturer.
2.7: The speed of the vehicle during its passage through the metering installation shall be less than the maximum speed specified by the manufacturer.

3	Maximum Tolerated Errors (EMT)

The EMTs for the values specified by the profile measurement installation when measuring a test object are as follows:

-: For height: ± 1.5 cm;
-: For width: ± 1.5 cm;
-: For length: ± 2.5 cm.

¹ RS 741.41

State 1 ^Er January 2013

RS 941.201 DFJP Order of 19 March 2006 on length measuring instruments

Original Language Title: RS 941.201 Ordonnance du DFJP du 19 mars 2006 sur les instruments de mesure de longueur

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941.201

DFJP Ordinance on Length Measurement Instruments

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