Some standard content:
National Metrology Technical Standard of the People's Republic of China JJF1117—2004
Specification for Comparison of Measuring Instruments
Specification for Comparison of Measuring Instruments
Issued on March 2, 2004
Implementation on June 2, 2004
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China JJF 1117—2004
Specification for Comparisonot Measuring Instrument
JJF 1117—2
This specification was approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on February 2, 2004, and came into effect on June 2, 2004.
Responsible unit:
Drafting unit:
Enterprise Legal Metrology and Metrology Technical Committee China Institute of Metrology
China Institute of Metrology
Non-standard entrusted enterprise legal metrology management Jichen Technical Committee is responsible for the interpretation of this specification Drafting person:
Wei Shoufang
Shi Changyi
JJF E11—2004
(China Testing Technology Research Institute)
(China Institute of Metrology)
References
Terms and definitions
Measuring instruments
Comparison organizers
Leading laboratory
Reference laboratory
Expert group
Measurement uncertainty
4 Organization and planning of comparison
4.1 Proposal for comparison
Establishment and conditions of leading laboratory
Establishment and conditions of expert group
4.4 Responsibilities
5 Implementation of the comparison
Formulation of comparison implementation plan
J3F 1117—24
5.2 Provisions for circulation and transportation of measuring instruments
6.3 Confidentiality provisions
6. Processing and reporting of comparison results
6.1. Processing of results
6.2. Reporting
7.1. Evaluation of comparison results
8.2. Utilization of comparison results
8.3. Filing and reporting of comparison results
Appendix A. Comparison route and its details
1. Scope
JJF 1117—2H4
Specification for comparison of measuring instruments
This specification is applicable to the organization, implementation and evaluation of the comparison of measuring instruments organized by government metrology administrative departments at the government level (hereinafter referred to as the comparison specification) to ensure and check the accuracy and reliability of the measurement values of measuring instruments and achieve traceability. Similar comparisons organized or initiated by other departments may be used for reference: 2 References
() CIPR/MHA: 1999 International Committee for Measuring Basics "Agreement on the Recognition of Calibration and Measurement Certificates Issued by National Measuring Standards (Standards) Teams and National Metrology Institutes" (2) CITPB/MRA Annex I: 1999 International Committee for Measuring Basics Key Comparison Guidelines "Agreement on the Recognition of Calibration and Measurement Certificates Issued by National Measuring Standards (Standards) Teams and National Metrology Institutes" (3) IS0/EC Rule 43: 1999 Proficiency Verification Using Experimental Space Comparison (41 Rules) 1-2000 National Calibration Standards and Rules (5) JF1001-19>8 General Terms and Definitions (6) JJF1059-190 Evaluation and Expression of Uncertainty in Measurement When using this specification, please pay attention to the current valid versions of the above-mentioned references. 3 Terms and Definitions
Measuring Instruments nteasuringinetruent (F001199g) 3.1
Instruments used alone or together with other instruments for measurement are: 3.2 Comparison cmmparinn ||tt| |This specification refers to the process of comparing the values reproduced by the same type of measuring instruments with the same accuracy level or specified uncertainty range under specified conditions. 3.3 Retereuceval (MRA-99.10) has the same uncertainty and measurement traceability, and is a value of the standard or an agreed value given by the leading laboratory.
Transfer Standard TransferRtandar (JF1001—1998) 3.4
A measurement used as a medium in the comparison of measurement standards Measurement standard, note: the provincial people are not the ones who secrete the measurement on time, they should transmit the device once it is in use. 3.5 Comparison organizer In this standard, it refers to the unit that proposes and manages the comparison work, which is generally undertaken by the government planning and administrative department. 3.6 Pilot laboratory In this standard, it refers to the laboratory that is mainly responsible for the organization and implementation of the comparison. 3. Reference laboratory In this standard, it refers to the laboratory that participates in the comparison work. 3 isl eu
JJF 1117—20(4
In this standard, it refers to a special group implemented by a group of senior experts in the field of Beijing, who is responsible for the technical guidance and coordination of the comparison work:
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4 comparison of the group and planning
4." The comparison was proposed
41.1 Liu Shan National Industry Metrology Technical Committee will decide, you can mountain! 4.1.2 The comparison is a long-term project, which must meet the relevant conditions, and the technical ability of the experiment is effective. 4.2 The establishment of the leading laboratory conditions
4.2.1 The leading laboratory comparison organization is determined. 4.2.2 The leading laboratory should meet the following conditions: a. It should have a legal and impartial status: ! There are stable and reliable standards in the comparison and the comparison process; ! The measurement accuracy meets the requirements of the comparison, and can continuously provide accurate measurement data during the entire comparison period. It can provide a stable and reliable transmission chain, and can provide assistance measures to avoid problems in the middle of the standard, and ensure the implementation of the comparison plan:
d. 4.3 The formation and organization of the expert team 4.3.1 The leading laboratory shall nominate the members of the expert team after consultation with the reference laboratory (usually 35 members) 4.3.2 The members of the expert team shall meet the following conditions: 1) be a technical professional; 2) have adequate technical skills; 3) be fair and responsible. 4.4 The comparison team shall propose the comparison project: 4.2.1 The comparison team shall propose the comparison project: 5) determine the leading laboratory: 6) determine the leading laboratory: 7) determine the leading laboratory: 8) determine the leading laboratory: 9) determine the leading laboratory: 10) determine the leading laboratory: 11) determine the leading laboratory: 12) determine the leading laboratory: 13) determine the leading laboratory: 14) determine the leading laboratory: 15) determine the leading laboratory: 16) determine the leading laboratory: 17) determine the leading laboratory: 18) determine the leading laboratory: 19) determine the leading laboratory: 20) determine the leading laboratory: 21) determine the leading laboratory: 22) determine the leading laboratory: 23) determine the leading laboratory: 24) determine the leading laboratory: 25) determine the leading laboratory: 26) determine the leading laboratory: 27) determine the leading laboratory: 28) determine the leading laboratory: 29) determine the leading laboratory: 30) determine the leading laboratory: 31) determine the leading laboratory: 32) determine the leading laboratory: 33) determine the leading laboratory: 34) determine the leading laboratory: 35) determine the leading laboratory: 36) determine the leading laboratory: 37) determine the leading laboratory: 38) determine the leading laboratory: 39) determine the leading laboratory: 40) determine the leading laboratory: 41) determine the leading laboratory: 42) determine the leading laboratory: 43) determine the leading laboratory: 44) determine the leading laboratory: 45) determine the leading laboratory: 46) determine the leading laboratory: 47) determine the leading laboratory: 48) determine the leading laboratory: 49) Is or solicit reference laboratory;
d read the expert period:
JJ 1117-2IHO4
e: a hundred tables of discussion, the final report of the law: the heart of its own abandoned reason migration pre
4.4.2± experimental prison
express the transmission carefully marked, non-data transmission standard a kill cattle problem of the software implementation b! Preliminary experiments, including data transmission let the standard of the determination of the test and transportation characteristics of the inspection; and rate! The experiment is not discussed, and a plan for the experiment is formulated; the expert group proposes the name of the expert group: in the comparison period, the technical maintenance will provide accurate test data; the epidemic plan is the same as the gold plan, and the treasure is shipped and accepted by the design and acceptance standards:) the acceptance policy of the experiment seat is required: h) write and modify the comparison report:
and abide by the rate regulations,
4.4.3 Zero comparison laboratory
) Cooperate with the nomination of the tenth acceptance laboratory: b) complete the comparison experiment according to the requirements of the comparison plan: the plan accepts the quantity and transmission rate of the experiment, and ensures its investigation and the main points: the leading laboratory provides data:) Animal protection business regulations are completed bzxZ.net
2.4.4 Expert Hong
a) The laboratory advances the technology! The first job index: h city color important culture
\) check the big technical problem:
center modulation leading to technical design:
P) avoid confidentiality regulations,
5.Implementation of the comparison
Formulation of the comparison implementation plan
The comparison implementation plan shall be drafted by the leading laboratory, and the opinions of the signing laboratories shall be sought. Finally, it shall be implemented after expert review. The comparison implementation plan mainly includes the following aspects: 5.1.2 Briefly explain the reason, scope and nature of the comparison. 5.1.3 The base and the working point to be compared, including the distance and frequency band: the requirements for the accuracy level or uncertainty range.
5.1.4 Requirements for the environmental conditions and other influencing factors of the comparison. 5.1.4 Transfer Standard
Specify the transfer standard and its provider: specify the comparison instruments, auxiliary equipment and corresponding accuracy requirements. S.1.5 Participating units and contact information
JIE111T—ZUU4
Specify the pilot test plan, reference test unit and expert group, indicate the contact person and effective contact information, including: unit, name, address, postal code, telephone number, email, etc. 5.1.6 The comparison route should be clearly arranged 5.1.6.1 Determination of the comparison route: There are three types of comparison routes. This standard recommends three typical routes: circular type, early type and long type. The choice of comparison route can be determined by the characteristics of the comparison standard: any of the three typical comparison route forms can be selected, and it is also allowed to adopt the same method for comparison of different properties. The typical comparison route diagram and its description are shown in Appendix A. 5.16.2 Determination of the comparison time: The influence of instability caused by external factors during the transportation process, such as source, vibration, etc., should be fully considered, and the longest comparison work time taken by the experimenter should be determined accordingly, so as to determine the overall schedule of the experimental case: The time is arranged by the company and determined by the comparison laboratory operator. 5.1.7 The formulation of unexpected situation management
The content of the comparison test should be clearly stated in the following:) The procedures for handling general failures in the transfer standard and transportation process; The procedures for handling failures caused by external factors during the calibration of the transfer standard by the laboratory; 5.1.8 Comparison technical plan
5.1.N.1 Provisions for changes in transfer standards
A detailed description of the transferred standard; including size, weight, manufacturer and operator's required technical data, and specify the measures and handover methods to be taken when receiving the transferred standard. 5.1..2 Provisions for the transportation of transfer standards
Special provisions for the handling of transfer standards based on their characteristics: including packaging, installation, adjustment, calibration, repackaging and necessary transportation conditions.
5.1.H.3 Provisions for the preparation of reference laboratory air comparisons, including the formulation of environmental conditions necessary for comparisons and the preparation of special equipment.
5.1.8.4 Guidance for records and result reports, including (but not limited to) the format of records and reports: legal units of measure, number of significant digits of data, etc. 5.1.K.5 Selection of comparison procedures: The format of the compliance record or report shall be distributed to the reference laboratory in advance. 5.1.K.5 Selection of comparison procedures: In addition to the methods and test procedures specified in the national verification procedures or national technical specifications, under certain legal circumstances, the reference laboratory may be required to adopt a specified method, such as a national or internationally recommended standard method, and confirmed by appropriate means (such as collaborative testing): The reference value band should be clearly defined by a high-level laboratory (national base, standard laboratory space) and recognized by the department. , which can be calculated by measurement or jointly agreed upon by the lead laboratory and the reference laboratory. 5.1.8.6 List the main components of the uncertainty of measurement, the necessary explanations for the assessment method, and give the corresponding accuracy and confidence level specifications. 5.1.8.7 Indicate the way in which the instruments and equipment used for comparison are sourced to the national standard and their measurement uncertainty. 5.1.8.8 Provide timely information on the way to transmit the comparison results to the lead laboratory, and the precautions during the transmission and comparison process, etc.:
JFF 1117—2004
5.2 The leading laboratory shall organize the circulation and transportation of the transfer standard, and ensure the safety of the transfer standard during the transportation and handover process. It shall also be stipulated that qualified personnel shall be responsible for the circulation and transportation of the transfer standard, and a special person shall be responsible for it when necessary.
S.2.1 The reference laboratory shall transport the transfer standard to the next laboratory or the leading laboratory according to the specified transportation method and plan.
5.2.2 Before the transfer standard is transported out, the reference laboratory shall notify the next laboratory in time. 5.2.3 When the transfer standard arrives at the next laboratory, the lead laboratory shall immediately check whether the transfer standard has been damaged and fill in the receipt list. S.2.4 If there is any delay in the transportation and inspection process, the lead laboratory shall notify the relevant reference laboratories and, if necessary, modify the schedule or take other corresponding measures. 5.3 The plan shall clearly stipulate that before the comparison data (or report) has not been officially announced, the lead laboratory, all relevant personnel of the comparison laboratory and experts shall be notified. The comparison results shall be kept confidential by both the maintenance and the responsible party. Any data corruption shall not be allowed and the relevant information of the comparison shall not be leaked to ensure the rigor and fairness of the comparison data: (Handling and reporting of comparison results
6.1 Handling of comparison results
6.1.1 Provisions for providing reference laboratory results of comparison When the comparison experiment is completed, the reference laboratory shall submit the comparison results to the leading laboratory within the specified time. Within 10 days after the completion of the comparison work, the comparison results shall be transmitted to the leading laboratory in an appropriate and effective manner: The comparison results shall be submitted to the reference laboratory by the reference laboratory in the form of a corresponding laboratory report. After the results are accumulated, the organization shall conduct statistical analysis of the data and prepare the comparison report in accordance with the regulations:
6.1.2 Statistical analysis of data
) The laboratory shall summarize and analyze the results of the reference experiment, pay special attention to the verification of data input, and make statistical analysis;
The rules for data processing, the number of valid digits, and the elimination of abnormal values shall be carried out in accordance with the metrological verification procedures or the comparison implementation plan;
) The original records, electronic backup files, printed results, and drawings shall be kept for an appropriate period of time. 6.2 Comparison report
The comparison report is divided into the initial report and the final report, which are drafted and revised by the laboratory. According to the report preparation plan, the following principles should be followed:
a! During the comparison period, the leading laboratory shall maintain the comparison results submitted by the comparison laboratory. If the comparison results are not delivered within the specified time limit, the comparison report shall be returned to the relevant laboratory for revision. If the relevant measurement results are not accurate, or the accuracy is not included in the accuracy report, the comparison shall be considered as incomplete and the results shall be returned for revision. If the comparison results are not delivered within the specified time limit, the results shall not be included in the comparison report. If the comparison results are not complete, the laboratory may find that the comparison results are out of range (i.e., out of range), the relevant comparison laboratory shall be informed in time. Verify the space and check it! , but do not know the abnormal signal: if the result is wrong, then the reference drive signature confirmation error, then the comparison result is invalid. The comparison is uncertain and the Pu Changshan scholar is looking for the home account section to explore (you can work together with the participants in the experiment space, when you want to learn the calculation, the three-in-one and effective method will be confirmed by the expert - if you still choose to make a proposal for the comparison result or pure opinion, then the virtual public expert group research level will return the result to the experiment space: if you still make a proposal, then the design will leave an opinion or guarantee that the experiment space will be returned to the European comparison. 6.2.1. The main contents of the comparison report include:) a summary of the technical status of the transmission standard, including the quality and running performance : ）Overview and related explanations:
) Comparison data records and charts when necessary: Comparison results and measurement uncertainty analysis, including reference value uncertainty, the difference between the reference laboratory's measurement results and the reference value, and the measurement uncertainty. In general, the calculation process should be listed in detail;) The expert group reviews the opinions.
6.2.2 Planned return
: After all the comparisons are completed, the reference laboratory will prepare a step-by-step report, and the reference laboratory will be publicly reported and solicited for general opinions: In the preliminary report, it should include the main contents of the new 6..1 specification: The reference experiment plan should be issued within the specified period of time. The leading laboratory shall discuss with the relevant laboratory and reflect the conclusions of the design in the revision of the supplementary report. The leading laboratory shall submit the final report within the specified time. The final report shall include the main contents of the report, including the suggestions put forward by the reference laboratory, and the final report shall be submitted to the review group for review. The final report shall be reviewed and approved by the review group. The final report shall be submitted to the review group for review. The review of the results shall be reviewed and approved by the review group.! The evaluation of the comparison results is based on the receipt of the North Company, the main experiment rate and the reference experiment rate! Sha Shang, and under the guidance of enterprise experts, the unified determination. 7 After the system is completed, the main experiment will be compared with the laboratory on the same day! Review, formally report the results of the comparison, and then list the meeting minutes. 1. Comparison results: The comparison results of the main products should be used as a reference for comparison. 2. Comparison results: The comparison results of the main products should be used as a reference for comparison. 3. Comparison results: The comparison results of the main products should be used as a reference for comparison. 4. Comparison results: The comparison results of the main products should be used as a reference for comparison. 5. Comparison results: The comparison results of the main products should be used as a reference for comparison. 6. Comparison results: The comparison results of the main products should be used as a reference for comparison. 7.2.1 The comparison results should be published in relevant domestic magazines in the form of reports. 7.2.2 The comparison results should be published in relevant technical journals or conference proceedings at home and abroad in the form of papers. 7.2.3 In relevant professional comparison reviews, it should be used as effective evidence of the ability to participate in important technical activities. 7.3 Filing and reporting of comparison results: After the comparison work is completed, the leading laboratory should file all the comparison data. The comparison results shall be submitted to the comparison organizer in time.
Appendix A
JJF1117—2004
Comparison route diagram and its description
The comparison route diagram is shown in Figure A1, Figure 42 and Figure A3. The comparison route can be determined according to the characteristics of the selected transmission standard, and can be any of the following forms (other methods of comparison of different properties are also allowed): A
Figure A shows 1 pilot laboratory, R, C, D, F, F, G represent reference laboratories: 1 Figure 1 is a ring comparison method. First, the pilot laboratory A will measure the transmission standard in this laboratory! After calibration, the transfer standard is transferred to reference laboratory A after calibration data is obtained; after calibration by laboratory B according to the procedure specified in this instruction manual, the transfer standard is transferred to reference laboratory D. The following sequence is repeated, and finally the transfer standard is returned to the first laboratory. The transfer standard is retrogradely calibrated in laboratory A to verify that the transfer standard has changed. There are only a few reference laboratories in the world, and the standard structure is relatively simple, easy to carry, and has very good stability. Figure 42 shows the formal comparison method. First, laboratory A calibrates the transfer standard in laboratory A, and then promptly sends the transfer standard to the reference laboratory for calibration by the laboratory technicians according to the specified procedures in the laboratory. After obtaining the calibration data, the transfer standard is sent back to the laboratory for recalibration in the A test room to examine whether the indication of the transfer standard changes after transportation. If the change is within the allowable range, the comparison is effective. The laboratory can take the average of the two times before and after as the experimental case for comparison. At the same time, the difference between the installation of the two laboratories A and B is calculated. If the difference is within the transfer standard range, it indicates that the laboratory equipment meets the requirements; if the difference is large, the A and B laboratories can check whether there is a systematic error in the installation. After confirming that there is no systematic error, the second round of comparison can be carried out. This method is suitable for color sleeve transfer standards. The comparison cycle is short. Even if a transfer standard is damaged, it only affects the comparison results of one laboratory: Figure A3 is a modified comparison method. The three small rings in the middle are formed. We carried out this comparison of the two reference laboratories according to the circle 5 method and returned the transfer standard to the A test room for recalibration. By comparing, the product can verify the change of the inferred value of the transmission standard during the comparison process, without waiting for the comparison laboratory to complete the comparison before returning to the laboratory: this method can set the effective comparison in the middle of the comparison process. If it is carried out when the transmission standard is strong, the comparison cycle can be shortened. Generally, if the stability of the transmission standard is very good, the circular method can be adopted; if the stability of the special standard is relatively good, the full-scale method can be adopted; otherwise, the full-scale method has to be adopted.
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