General requirements for programs and methods of metrological certification of measuring instruments. Metrological certification of measuring instruments

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STATE STANDARD OF THE UNION OF THE SSR

STATE PROVISION SYSTEM
UNIT OF MEASUREMENTS

METROLOGICAL CERTIFICATION
MEASUREMENT INSTRUMENTS

USSR STATE MANAGEMENT COMMITTEE
PRODUCT QUALITY AND STANDARDS
Moscow

STATE STANDARD OF THE UNION OF THE SSR

State system ensuring the uniformity of measurements

METROLOGICAL CERTIFICATION OF MEASURING INSTRUMENTS

State system for ensuring the uniformity of
measurements. Metrological certification of
measuring instruments

GOST
8.326-89

Date of introduction 01.01.91

The standard applies to:

working and exemplary measuring instruments, as well as calibration facilities that are not subject to state tests in accordance with GOST 8.001;

measuring channels included in systems of automatic or automated measurement, control, management and other systems (complexes) not intended for mass production;

single copies of serial production measuring instruments used in conditions and modes that differ from the conditions and modes for which their metrological characteristics are normalized, or changes have been made to the design that affect these characteristics;

experimental (head) and experimental samples of measuring instruments (with the exception of samples that have passed state acceptance tests with positive results), manufactured in the process of performing experimental design and research work, transferred to operation;

measuring instruments purchased by import in single copies or in small lots.

This standard establishes general requirements for the organization and procedure for metrological certification of measuring instruments *, as a kind of state metrological supervision and departmental control.

* It is allowed to use the conditional generalized name - "non-standardized measuring instruments" in relation to the measuring instruments listed above.

In accordance with this standard, it is allowed to carry out metrological certification of single copies of measuring instruments of serial production, the stability of the metrological characteristics of which makes it possible to establish individual metrological characteristics for them.

On the basis of this standard, enterprises (organizations), if necessary, establish in the regulatory and technical documents the procedure for carrying out metrological certification of measuring instruments, taking into account their specifics.

The terms used in the standard and their explanations are given in Appendix 1.

1. GENERAL PROVISIONS

1.1. The main tasks of metrological certification are:

determination and establishment of conformity of the metrological characteristics of measuring instruments with the requirements of the documents applicable to them, indicating the obtained data in the certificate;

establishment of a list of metrological characteristics of measuring instruments subject to control during verification;

testing of the verification method.

1.2. Work on metrological certification of measuring instruments and payment for its implementation is carried out on the basis of business contracts (hereinafter referred to as the contract) between interested parties or letters of guarantee, in which the deadlines for the performance of work and other conditions are established.

1.3. Metrological examination of technical specifications and technical documentation submitted for metrological certification, it is recommended to carry out in accordance with MI 1314.

1.4. The planning of work on metrological certification carried out by the state metrological service in accordance with clause 2.2 is carried out on the basis of proposals (letters) of organizations (enterprises) sent to the territorial body of the State Standard of the USSR at their location.

In cases where territorial authority USSR State Standard cannot perform metrological certification of measuring instruments, it is necessary to apply to metrological NGOs (NII) of the USSR State Standard for specialization.

In other cases, when, within the framework of the existing specialization, it is not possible to attribute the measuring instrument to the scope of activity of any metrological NGO (NII) of the USSR State Standard, an application for metrological certification is sent to the USSR State Standard.

1.5. Planning of work on metrological certification of measuring instruments subject to metrological certification by departmental metrological services in accordance with clause 2.3 is carried out in the manner established by the relevant organizations (enterprises).

1.6. Metrological certification of imported measuring instruments is carried out by the state or departmental metrological services determined by the State Standard of the USSR in the process of coordinating applications for the purchase of measuring instruments for import.

1.7. Measuring instruments that have passed metrological certification are subject to verification during operation, storage and after repair in accordance with the methodology specified in the metrological certification certificate. Measuring instruments are subject to repeated metrological certification, the design or conditions of use of which have been changed, exemplary measuring instruments and verification installations if a change in discharge is necessary, as well as measuring instruments for which it is required to change the normalized metrological characteristics.

1.8. The decision on the suitability of manufactured measuring instruments for use for the purposes and under the conditions determined by their purpose should be made on the basis of positive results of metrological certification:

measuring instruments that have passed metrological certification in the state metrological service - by the head of the organization (enterprise) that conducted the metrological certification;

other measuring instruments - by the head of the enterprise (organization) that developed, manufactured or uses measuring instruments on the proposal of the organization (subdivision) of the metrological service that carried out their metrological certification.

1.9. The All-Union Scientific Research Institute of Metrological Service (VNIIMS) is the head organization that carries out general scientific and methodological management of work on metrological certification of measuring instruments, as well as registers standard programs for metrological certification (TPMA).

2. ORGANIZATION OF WORK ON METROLOGICAL CERTIFICATION

2.1. Metrological certification of measuring instruments is carried out by:

state metrological service;

departmental metrological services (leading and basic organizations of the metrological service of ministries and departments, metrological services of enterprises and organizations, including cooperative ones), as well as head organizations for state testing of measuring instruments of ministries (departments) in accordance with the provisions on these services.

2.2. Metrological certification in the state metrological service should be subject to measuring instruments subject to mandatory state verification in accordance with GOST 8.513.

2.3. Measuring instruments that are not related to those specified in clause 2.2 are subject to metrological certification by departmental metrological services.

In the absence of exemplary measuring instruments and (or) necessary conditions in the metrological service of an enterprise (organization), metrological certification of measuring instruments can be carried out by the head (base) organizations of departmental metrological services, metrological services of other departments (enterprises) or the state metrological service.

2.4. Metrological certification of measuring instruments not specified in clause 2.2, developed under contracts with third-party enterprises (organizations), should be carried out by metrological services of developing enterprises (manufacturers) with the participation of representatives of the metrological service of the customer, if this is stipulated in the terms of reference (or contract).

2.5. It is allowed to combine metrological certification of measuring instruments with departmental (interdepartmental) acceptance and acceptance tests.

2.6. Metrological certification of measuring instruments included in the test equipment and measuring channels of systems (complexes) may be combined with certification of testing equipment and metrological certification of measuring channels. In this case, the program and methodology for metrological certification (PMA) of measuring instruments can be included in the program for certification of test equipment and the program for metrological certification of measuring channels.

2.7. In the cases provided for in paragraphs. 2.5 and 2.6, representatives of metrological services should participate in the metrological certification of measuring instruments.

2.8. The metrological certification of the first sample of the newly developed verification installation, which is the starting point for departmental metrological services, is carried out by the main center (center) of standards in accordance with its specialization. The metrological certification of the following samples of the calibration plant of the same type is allowed to be carried out by the state or, if the calibration plants are not the original ones, departmental metrological services.

3. ORDER OF PRESENTATION OF MEASURING INSTRUMENTS ON
METROLOGICAL CERTIFICATION

3.1. Measuring instruments of domestic production are submitted for metrological certification along with technical documentation, which should include:

terms of reference for the development or a document replacing it containing the requirements for the measuring instrument and specifications(if their development is provided);

operational documentation in accordance with GOST 2.601 (to the extent stipulated by the terms of reference);

PMA project;

draft document for the verification procedure (in the absence of the "Verification" section in the operational documentation) in accordance with RD 50-660-88 or NTD for the verification procedure, according to which it is allowed to verify the certified measuring instrument;

protocols of preliminary tests carried out by the developer, if these tests were provided for in the terms of reference.

3.1.1. For metrological certification of measuring channels included in automatic control systems and other systems (complexes), additionally submit:

technical documentation for the system (complex);

a list of measuring channels subject to metrological certification, a certificate of metrological certification or documents confirming the verification of measuring instruments that are constituent elements of the measuring channel.

3.1.2. If the technical documentation for the system (complex) does not contain requirements for metrological characteristics, including the metrological characteristics of measuring channels as a whole, then these requirements must be formulated before the start of work on metrological certification by the developer (manufacturer) of systems (complexes) or the metrological service of the customer (consumer).

3.1.3. As part of the technical documentation for calibration installations, they additionally provide certificates of verification (metrological certification) of exemplary measuring instruments included in their composition.

3.2. For metrological certification of measuring instruments purchased by import in single copies or in small batches, the consumer submits:

a set of documents attached by the manufacturer to the supplied measuring instrument (with translation into Russian);

operational documentation developed (if necessary) on the basis of the manufacturer's documents, taking into account the requirements of GOST 2.601; GOST 8.009 and other regulatory and technical documents;

PMA project;

draft document for the verification procedure (in the absence of the "Verification" section in the operational documentation).

3.3. In the cases provided for in paragraphs. 3.1 and 3.2, PMA and the method of verification of measuring instruments can be developed by the organization conducting the metrological certification, provided that these works are included in the contract.

3.4. In necessary cases, in agreement with the organization conducting the metrological certification, the developer organization provides exemplary measuring instruments and other equipment necessary for experimental research and normal functioning of the certified measuring instruments.

3.5. PMA is developed and executed in accordance with Appendix 2.

If there is a TPMA that applies to similar groups of measuring instruments, in agreement with the organization conducting the metrological certification, it is allowed not to develop the PMA. If necessary, additions to the TPMA can be developed, approved by the organization conducting the metrological certification.

4. PROCEDURE FOR METROLOGICAL CERTIFICATION AND
PRESENTATION OF ITS RESULTS

4.1. The procedure for metrological certification (commission, structural units etc.) are established at the conclusion of the contract.

4.2. Metrological certification is carried out according to PMA, approved by the organization conducting metrological certification, and agreed with the metrological service of the customer (consumer), if the latter is provided for by the terms of reference or contract.

4.3. Measuring instruments used in metrological certification must have valid certificates about metrological certification or hallmarks confirming their verification.

4.4. The results of the studies performed when determining each metrological characteristic are recorded in a protocol signed by the performer in the form given in Appendix 3. It is allowed to use printouts obtained by machine, which must be signed by the same persons, as a protocol.

4.5. Comments noted in the process of reviewing the technical documentation should be reflected in the metrological certification protocol signed by the contractor, in accordance with which the technical documentation should be corrected.

4.6. In the course of metrological certification of measuring instruments manufactured (purchased by import) in a separate batch, as well as periodically manufactured in small batches, it is allowed to subject a part of the samples (as agreed with the customer) selected by random selection to full program research. Other copies, upon agreement with the customer, can be certified according to a reduced (adjusted) program, the volume of which must be established during the metrological certification of the first samples (not less than the volume provided for by the verification procedure).

In the event of a negative result of the metrological certification of one of the measuring instruments, the entire batch must be examined according to the full program of metrological certification.

4.7. With positive results of metrological certification of measuring instruments, a certificate is drawn up in the form given in Appendix 4.

It is allowed to reflect the results of metrological certification carried out according to a reduced program in the operational documentation for measuring instruments. At the same time, the number of the certificate of metrological certification of the first sample of measuring instruments, studied in full, and the organization that conducted the metrological certification are indicated.

4.8. Certificates of metrological certification are subject to accounting and are kept until the withdrawal of measuring instruments from circulation.

Copies of certificates of metrological certification of measuring instruments purchased by import are sent to VNIIMS.

4.9. The results of metrological certification of measuring instruments carried out in the process of departmental (interdepartmental) acceptance and acceptance tests, as well as in the process of certification of test equipment, are reflected in the act (protocol) of tests (certification), on the basis of which a certificate of metrological certification of measuring instruments is issued.

4.10. In case of negative results of metrological certification, a protocol is drawn up indicating the results obtained and (or) a notice of the unsuitability of the measuring instrument for use with appropriate justification.

ATTACHMENT 1
Reference

TERMS USED IN THIS STANDARD
AND THEIR EXPLANATIONS

	Explanation
1. Metrological certification of measuring instruments
2. Measuring channel of the system	Serial connection of measuring channels, provided by the algorithm of the system functioning, performing a complete function from the perception of the measured value to the indication or its conversion into a signal, convenient either for further use outside the system, or for input into a digital or analog computing device that is part of the system (complex) (mainly according to MI 202-80)
3. Typical program and methodology for metrological certification of measuring instruments (TPMA)	A methodological document approved by the head organizations for state testing of measuring instruments of the State Standard of the USSR or ministries (departments), as well as the head (basic) organizations of the metrological service of ministries (departments), establishing the sequence, scope and methodology for metrological certification of measuring instruments, characterized by a common functional purpose, methods and means of attestation

GENERAL REQUIREMENTS FOR PROGRAMS AND METHODS
METROLOGICAL CERTIFICATION OF MEASURING INSTRUMENTS

1. PMA should provide a list of works and methods for their implementation, ensuring the fulfillment of the tasks of metrological certification of measuring instruments.

2. In the PMA it is recommended to use the methods of experimental research and review of technical documentation established in the standards, standard programs of state acceptance tests and other regulatory and technical documents. If it is impossible to use these methods and means, then the enterprise (organization) submitting a measuring instrument for metrological certification includes special methods and means for studying metrological characteristics in the PMA.

It is allowed to use calculation and calculation-experimental methods for determining the metrological characteristics of the measuring channels of systems (complexes).

3. If necessary, changes and additions can be made to the PMA, the expediency of which was identified during the certification process. All changes in the approved program and methodology of metrological certification must be formalized in an addendum agreed with the metrological service of the customer (if provided for in the terms of reference), and attached to the certification program.

4. PMA should contain an introductory part and the following sections:

consideration of technical documentation;

experimental study of measuring instruments;

registration of results of metrological certification.

Depending on the specifics of measuring instruments and the specifics of the organization of metrological certification, the PMA of measuring instruments can be supplemented with other sections.

5. The introductory part of the PMA should be stated in the following wording:

"This metrological certification program applies to ... (name and designation of measuring instruments) and establishes the content and methodology of metrological certification."

6. The section "Review of technical documentation" is recommended to be presented in the form of a table.

Requirements for the review of technical documentation	Review Methodology Guidelines

In the general case, in the first column of the table, the following requirements are checked:

compliance of the metrological characteristics of the certified measuring instrument specified in the technical documentation with the requirements terms of reference and regulatory and technical documents applicable to it;

completeness, correctness and method of expressions of metrological characteristics, normalized in the technical documentation;

completeness, correctness of methods and choice of means of verification based on the draft verification procedure in the absence of a registered NTD for the verification procedure;

completeness and correctness of the presentation of operational documentation.

7. The section "Experimental studies" is recommended to be drawn up in the form of a table.

The first column of the table lists the operations performed during experimental studies of measuring instruments, including: appearance; verification and evaluation of completeness; testing; verification of technical and determination of metrological characteristics; testing of the verification method.

The second column of the table sets out the methodology for determining (research) metrological characteristics, including the conditions for their determination. If there are experimental research methods given in the documents specified in paragraph 2 of this Appendix, it is recommended to provide links to these documents.

With a large volume of experimental research methods, they can be presented in a separate section "Research Methods". In these cases, in the second column of the table it is necessary to provide links to the relevant paragraphs of this section.

In the methodology for studying measuring instruments, it is recommended to provide:

list of metrological characteristics determined in the process of certification;

methods for determining metrological characteristics for measuring channels;

requirements for accuracy and conditions for measurements, as well as requirements for the characteristics of exemplary measuring instruments used in metrological certification;

the number of points at which the values of metrological characteristics are determined, and their location in the measurement range;

the number of measurements at each selected point, the number of series of measurements;

measurement mode and their sequence in time;

rules for processing measurement results;

form of presentation of measurement results.

8. The section "Formulation of the results of metrological certification" should contain requirements for the registration of the results of metrological certification of measuring instruments.

8.1. If in the process of checking the correctness of the draft verification methodology, deficiencies are found, then the verification document is subject to correction.

8.2. In the case when, based on the results of testing the current verification procedure for similar measuring instruments, it is established that it can be used for certification of measuring instruments, an appropriate entry is made in the operational documentation for these measuring instruments.

9. Annexes to PMA include:

examples of calculations for processing measurement results;

tables of calculated values, graphs of dependence of values and other calculated data;

terms and their definitions;

technical descriptions of auxiliary devices and devices used in the process of metrological certification;

necessary additional information about certified and exemplary measuring instruments and auxiliary means used in the process of metrological certification;

special safety instructions;

other materials that contribute to the elimination of errors during metrological certification and increase the productivity of certification work, for example, tables with pre-calculated maximum permissible deviations for the values of parameters determined during certification, nomograms, etc.

MINUTES No. dated _____________ 19 _

1. Research operations __________________________________________________

operation name and

___________________________________________________________________________

(or) PMA item number

2. Research methodology _________________________________________________

PMA item number, type, category and

___________________________________________________________________________

number of used exemplary measuring instruments,

___________________________________________________________________________

conditions for

3. Experimental data and results of their processing ______________________

___________________________________________________________________________

4. Conclusions _______________________________________________________________

for each feature

___________________________________________________________________________

or in general

Artists: ___________________________________________

signature, surname, initials

APPENDIX 4
Mandatory

___________________________________________________________________________

name of the organization conducting certification

CERTIFICATE No. dated ______ 199

about metrological certification

___________________________________________________________________________

name, designation, serial number, date of manufacture

Owned by _____________________________________________________________

name of the enterprise or organization

Purpose of the measuring instrument _______________________________________________

a brief description of object, for

___________________________________________________________________________

which the measuring instrument is intended, and operating conditions,

___________________________________________________________________________

name of measured physical quantities

Results of metrological studies *

According to the results of metrological certification, protocol No. _______________________

dated ______________ 19 ___ __________________________________________________

name of the measuring instrument

found to be appropriate __________________________________________________

name of the technical documentation,

___________________________________________________________________________

Verification shall be carried out in accordance with ___________________________________________

name and designation

___________________________________________________________________________

document on the verification procedure or operational document,

___________________________________________________________________________

Verification should be carried out no later than ________________________ 19 ____.

* With a large number of determined metrological characteristics, it is allowed to reflect the results of studies only in the protocol attached to the certificate.

INFORMATION DATA

1. DEVELOPED AND INTRODUCED State Committee USSR for product quality management and standards

DEVELOPERS

E. V. Vasiliev(topic leader); V. I. Belotserkovsky, cand. tech. sciences; X. O. Malikova, cand. legal sciences; V. V. Shchepina

2. APPROVED AND INTRODUCED BY Decree of the USSR State Committee for Product Quality Management and Standards dated 05.12.89 No. 3554.

4. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS

STATE STANDARD OF THE UNION OF THE SSR

STATE PROVISION SYSTEM
UNIT OF MEASUREMENTS

METROLOGICAL CERTIFICATION
MEASUREMENT INSTRUMENTS

GOST 8.326-89

USSR STATE MANAGEMENT COMMITTEE
PRODUCT QUALITY AND STANDARDS

Moscow

STATE STANDARD OF THE UNION OF THE SSR

State system for ensuring the uniformity of measurements

METROLOGICAL CERTIFICATION OF MEANS
MEASUREMENTS

State system for ensuring the uniformity of
measurements. Metrological certification of
measuring instruments

GOST
8.326-89

Introduction date 01.01.91

working and exemplary measuring instruments, as well as calibration facilities that are not subject to state tests in accordance with GOST 8.001;

measuring channels included in systems of automatic or automated measurement, control, management and other systems (complexes) not intended for mass production;

measuring instruments purchased by import in single copies or in small lots.

This International Standard specifies General requirements to the organization and procedure for metrological certification of measuring instruments *, as a kind of state metrological supervision and departmental control.

* It is allowed to use the conditional generalized name - "non-standardized measuring instruments" in relation to the measuring instruments listed above.

The terms used in the standard and their explanations are given in.

1. GENERAL PROVISIONS

1.1. The main tasks of metrological certification are:

establishment of a list of metrological characteristics of measuring instruments subject to control during verification;

testing of the verification method.

1.2. Work on metrological certification of measuring instruments and payment for its implementation is carried out on the basis of business contracts (hereinafter referred to as the contract) between the interested parties or letters of guarantee, which set the deadlines for the performance of work and other conditions.

1.4. The planning of work on metrological certification, carried out by the state metrological service in accordance with, is carried out on the basis of proposals (letters) of organizations (enterprises) sent to the territorial body of the State Standard of the USSR at their location.

In cases where the territorial body of the USSR State Standard cannot perform the metrological certification of measuring instruments, it is necessary to contact the metrological NPO (NIN) of the USSR State Standard for specialization.

1.5. Planning of work on metrological certification of measuring instruments subject to metrological certification by departmental metrological services in accordance with is carried out in the manner established by the relevant organizations (enterprises).

measuring instruments that have passed metrological certification in the state metrological service - by the head of the organization (enterprise) that conducted the metrological certification;

2. ORGANIZATION OF WORK ON METROLOGICAL CERTIFICATION

2.1. Metrological certification of measuring instruments is carried out by:

state metrological service;

2.7. In the cases provided for in and , representatives of metrological services must participate in the metrological certification of measuring instruments.

3. PROCEDURE FOR SUBMISSION OF MEASURING INSTRUMENTS FOR METROLOGICAL CERTIFICATION

terms of reference for the development or a document replacing it containing the requirements for the measuring instrument and technical specifications (if their development is provided);

operational documentation in accordance with GOST 2.601 (to the extent stipulated by the terms of reference);

PMA project;

protocols of preliminary tests carried out by the developer, if these tests were provided for in the terms of reference.

3.1.1. For metrological certification of measuring channels included in automatic control systems and other systems (complexes), additionally submit:

technical documentation for the system (complex);

a set of documents attached by the manufacturer to the supplied measuring instrument (with translation into Russian);

PMA project;

draft document for the verification procedure (in the absence of the "Verification" section in the operational documentation).

3.3. In the cases provided for in and , PMA and the methodology for verifying measuring instruments can be developed by the organization conducting the metrological certification, provided that these works are included in the contract.

3.5. PMA is developed and executed in accordance with.

4. PROCEDURE FOR METROLOGICAL CERTIFICATION AND FORMULATION OF ITS RESULTS

4.1. The procedure for carrying out metrological certification (commission, structural subdivisions, etc.) is established at the conclusion of the contract.

4.3. Measuring instruments used in metrological certification must have valid metrological certification certificates or stamps confirming their verification.

4.4. The results of the studies performed when determining each metrological characteristic are recorded in a protocol signed by the performer in the form given in. As a protocol, it is allowed to use printouts obtained by machine, which must be signed by the same persons.

In the event of a negative result of the metrological certification of one of the measuring instruments, the entire batch must be examined according to the full program of metrological certification.

4.7. With positive results of metrological certification of measuring instruments, a certificate is drawn up in the form given in.

4.8. Certificates of metrological certification are subject to accounting and are kept until the withdrawal of measuring instruments from circulation.

Copies of certificates of metrological certification of measuring instruments purchased by import are sent to VNIIMS.

4.9. The results of metrological certification of measuring instruments, carried out in the process of departmental (interdepartmental) acceptance and acceptance tests, as well as in the process of certification of test equipment, are reflected in the act (protocol) of tests (attestation), on the basis of which a certificate of metrological certification of measuring instruments is issued.

ATTACHMENT 1

Reference

TERMS USED IN THIS STANDARD AND THEIR EXPLANATIONS

	Explanation
1. Metrological certification of measuring instruments	According to GOST 16263
2. Measuring channel of the system	Serial connection of measuring channels provided by the algorithm of the system functioning, performing a complete function from the perception of the measured value to the indication or its conversion into a signal, convenient either for further use outside the system, or for input into a digital or analog computing device that is part of the system (complex) (mainly according to MI 202-80)
3. Typical program and methodology for metrological certification of measuring instruments (TPMA)	A methodological document approved by the head organizations for state testing of measuring instruments of the State Standard of the USSR or ministries (departments), as well as the head (basic) organizations of the metrological service of ministries (departments), establishing the sequence, scope and methodology for metrological certification of measuring instruments, characterized by a common functional purpose, methods and means of attestation

APPENDIX 2 GENERAL REQUIREMENTS FOR PROGRAMS AND METHODS OF METROLOGICAL CERTIFICATION OF MEASURING INSTRUMENTS

1. PMA should provide a list of works and methods for their implementation, ensuring the fulfillment of the tasks of metrological certification of measuring instruments.

STATE STANDARD OF THE UNION OF THE SSR

STATE PROVISION SYSTEM
UNIT OF MEASUREMENTS

METROLOGICAL CERTIFICATION
MEASUREMENT INSTRUMENTS

GOST 8.326-89

USSR STATE MANAGEMENT COMMITTEE
PRODUCT QUALITY AND STANDARDS

Moscow

STATE STANDARD OF THE UNION OF THE SSR

State system for ensuring the uniformity of measurements

METROLOGICAL CERTIFICATION OF MEANS
MEASUREMENTS

State system for ensuring the uniformity of
measurements. Metrological certification of
measuring instruments

GOST
8.326-89

Introduction date 01.01.91

working and exemplary measuring instruments, as well as calibration facilities that are not subject to state tests in accordance with GOST 8.001;

measuring channels included in systems of automatic or automated measurement, control, management and other systems (complexes) not intended for mass production;

measuring instruments purchased by import in single copies or in small lots.

This standard establishes general requirements for the organization and procedure for metrological certification of measuring instruments *, as a type of state metrological supervision and departmental control.

* It is allowed to use the conditional generalized name - "non-standardized measuring instruments" in relation to the measuring instruments listed above.

The terms used in the standard and their explanations are given in.

1. GENERAL PROVISIONS

1.1. The main tasks of metrological certification are:

establishment of a list of metrological characteristics of measuring instruments subject to control during verification;

testing of the verification method.

1.2. Work on metrological certification of measuring instruments and payment for its implementation is carried out on the basis of business contracts (hereinafter referred to as the contract) between the interested parties or letters of guarantee, which set the deadlines for the performance of work and other conditions.

In cases where the territorial body of the State Standard C With CP cannot perform the metrological certification of measuring instruments, it is necessary to contact the metrological NPO (NIN) of the State Standard of the USSR for specialization.

1.5. Planning of work on metrological certification of measuring instruments subject to metrological certification by departmental metrological services in accordance with is carried out in the manner established by the relevant organizations (enterprises).

measuring instruments that have passed metrological certification in the state metrological service - by the head of the organization (enterprise) that conducted the metrological certification;

2. ORGANIZATION OF WORK ON METROLOGICAL CERTIFICATION

2.1. Metrological certification of measuring instruments is carried out by:

state metrological service;

2.7. In the cases provided for in and , representatives of metrological services must participate in the metrological certification of measuring instruments.

3. PROCEDURE FOR SUBMISSION OF MEASURING INSTRUMENTS FOR METROLOGICAL CERTIFICATION

terms of reference for the development or a document replacing it containing the requirements for the measuring instrument and technical specifications (if their development is provided);

operational documentation in accordance with GOST 2.601 (to the extent stipulated by the terms of reference);

PMA project;

protocols of preliminary tests carried out by the developer, if these tests were provided for in the terms of reference.

3.1.1. For metrological certification of measuring channels included in automatic control systems and other systems (complexes), additionally submit:

technical documentation for the system (complex);

a set of documents attached by the manufacturer to the supplied measuring instrument (with translation into Russian);

PMA project;

draft document for the verification procedure (in the absence of the "Verification" section in the operational documentation).

3.5. PMA is developed and executed in accordance with.

4. PROCEDURE FOR METROLOGICAL CERTIFICATION AND FORMULATION OF ITS RESULTS

4.1. The procedure for carrying out metrological certification (commission, structural subdivisions, etc.) is established at the conclusion of the contract.

4.3. Measuring instruments used in metrological certification must have valid metrological certification certificates or stamps confirming their verification.

In the event of a negative result of the metrological certification of one of the measuring instruments, the entire batch must be examined according to the full program of metrological certification.

4.7. With positive results of metrological certification of measuring instruments, a certificate is drawn up in the form given in.

4.8. Certificates of metrological certification are subject to accounting and are kept until the withdrawal of measuring instruments from circulation.

Copies of certificates of metrological certification of measuring instruments purchased by import are sent to VNIIMS.

ATTACHMENT 1

Reference

TERMS USED IN THIS STANDARD AND THEIR EXPLANATIONS

Term	Explanation
1. Metrological certification of measuring instruments	According to GOST 16263
2. Measuring channel of the system	Serial connection of measuring channels provided by the algorithm of the system functioning, performing a complete function from the perception of the measured value to the indication or its conversion into a signal, convenient either for further use outside the system, or for input into a digital or analog computing device that is part of the system (complex) (mainly according to MI 202-80)
3. Typical program and methodology for metrological certification of measuring instruments (TPMA)	A methodological document approved by the head organizations for state testing of measuring instruments of the State Standard of the USSR or ministries (departments), as well as the head (basic) organizations of the metrological service of ministries (departments), establishing the sequence, scope and methodology for metrological certification of measuring instruments, characterized by a common functional purpose, methods and means of attestation

APPENDIX 2 GENERAL REQUIREMENTS FOR PROGRAMS AND METHODS OF METROLOGICAL CERTIFICATION OF MEASURING INSTRUMENTS

1. PMA should provide a list of works and methods for their implementation, ensuring the fulfillment of the tasks of metrological certification of measuring instruments.

2. In PMA it is recommended to use experimental research methods and consideration of technical documentation established in the standards, standard programs of state acceptance tests and other regulatory and technical documents. If it is impossible to use these methods and means, then the enterprise (organization) submitting a measuring instrument for metrological certification includes special methods and means for studying metrological characteristics in the PMA.

It is allowed to use calculation and calculation-experimental methods for determining the metrological characteristics of the measuring channels of systems (complexes).

4. PMA should contain an introductory part and the following sections:

consideration of technical documentation;

experimental study of measuring instruments;

registration of results of metrological certification.

Depending on the specifics of measuring instruments and the specifics of the organization of metrological certification, the PMA of measuring instruments can be supplemented with other sections.

5. The introductory part of the PMA should be stated in the following wording:

"This metrological certification program applies to ... (name and designation of measuring instruments) and establishes the content and methodology of metrological certification."

6. The section "Review of technical documentation" is recommended to be presented in the form of a table.

Requirements for the review of technical documentation	Review Methodology Guidelines

In the general case, in the first column of the table, the following requirements are checked:

compliance of the metrological characteristics of the certified measuring instrument specified in the technical documentation with the requirements of the technical assignment and the normative and technical documents applicable to it;

completeness, correctness and method of expressions of metrological characteristics, normalized in the technical documentation;

completeness, correctness of methods and choice of means of verification based on the draft verification procedure in the absence of a registered NTD for the verification procedure;

completeness and correctness of the presentation of operational documentation.

7. The section "Experimental studies" is recommended to be drawn up in the form of a table.

The first column of the table lists the operations performed during experimental studies of measuring instruments, including: checking the appearance; verification and evaluation of completeness; testing; verification of technical and determination of metrological characteristics; testing of the verification method.

The second column of the table sets out the methodology for determining (research) metrological characteristics, including the conditions for their determination. If there are experimental research methods given in the documents specified in this Appendix, it is recommended to provide links to these documents.

In the methodology for studying measuring instruments, it is recommended to provide:

list of metrological characteristics determined in the process of certification;

methods for determining metrological characteristics for measuring channels;

requirements for accuracy and conditions for measurements, as well as requirements for the characteristics of exemplary measuring instruments used in metrological certification;

the number of points at which the values of metrological characteristics are determined, and their location in the measurement range;

the number of measurements at each selected point, the number of series of measurements;

measurement mode and their sequence in time;

rules for processing measurement results;

form of presentation of measurement results.

8. The section "Formulation of the results of metrological certification" should contain requirements for the registration of the results of metrological certification of measuring instruments.

8.1. If in the process of checking the correctness of the draft verification methodology, deficiencies are found, then the verification document is subject to correction.

9. Annexes to PMA include:

examples of calculations for processing measurement results;

tables of calculated values, graphs of dependence of values and other calculated data;

terms and their definitions;

technical descriptions auxiliary devices and devices used in the process of metrological certification;

necessary additional information about certified and exemplary measuring instruments and auxiliary means used in the process of metrological certification;

special safety instructions;

APPENDIX 3 MINUTES No. dated _____________ 19 _

name, designation, serial number, date of manufacture

1. Research operations __________________________________________________

operation name and

___________________________________________________________________________

(or) PMA item number

2. Research methodology _________________________________________________

PMA item number, type, category and

___________________________________________________________________________

number of used exemplary measuring instruments,

___________________________________________________________________________

conditions for

3. Experimental data and results of their processing ______________________

___________________________________________________________________________

tables

4. Conclusions _______________________________________________________________

for each feature

___________________________________________________________________________

or in general

brief description of the object, for

___________________________________________________________________________

which the measuring instrument is intended, and operating conditions,

___________________________________________________________________________

name of measured physical quantities

Results of metrological studies*

According to the results of metrological certification, protocol No. _______________________

dated ______________ 19 ___ __________________________________________________

name of the measuring instrument

found to be appropriate _________________________________________________

name of the technical documentation,

___________________________________________________________________________

Verification shall be carried out in accordance with ___________________________________________

name and designation

___________________________________________________________________________

document on the verification procedure or operational document,

___________________________________________________________________________

Verification should be carried out no later than ________________________ 19 ____.

* With a large number of metrological characteristics to be determined, it is allowed to reflect the results of studies only in the protocol attachedto the testimony.

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the USSR State Committee for Product Quality Management and Standards

3. The procedure for submitting measuring instruments for metrological certification