Shulou(Shulou.com)11/24 Report--

CTOnews.com, October 14, according to the website of the State Administration of Market Supervision, the General Administration of Market Supervision recently issued notice No. 32 of 2022, approving the issuance and implementation of 24 national measurement technical specifications, including the Verification regulations for liquid Piston pressure gauges.

In the field of radio metrology, JJF 1286-2022 "Calibration Specification for Wireless Channel Simulator" was revised and issued, focusing on the calibration methods of path delay and path loss, and increasing the calibration of maximum Doppler shift, which provides a technical basis for the calibration of wireless channel simulators in aerospace and aviation industries. JJF 1982-2022 "level oscillator Calibration Specification" is revised and issued, which extends the upper frequency limit of the test signal to 150MHz and expands the output impedance at the same time. The calibration method takes into account both the new digital indicator level oscillator and the traditional pointer level oscillator. JJF 1238-2022 "Calibration Specification for Integrated Circuit Electrostatic discharge sensitivity testing equipment" was revised and published. in order to adapt to the changes of relevant international test standards, the discharge waveform calibration of machine model and latch-up model was added, and the calibration method of integrated circuit electrostatic discharge testing equipment was improved. Formulate and issue JJF 1983-2022 Calibration Specification for HD Video signal Analyzer, which is a special testing instrument for standard conformance test and conformance test of HD video equipment and video terminal equipment, etc., and is widely used by HD video equipment manufacturers and quality testing institutions, and the formulation and release of this standard provides measurement technical support for the development of HD video industry.

In the field of pressure measurement, JJG 59-2022 "Verification Regulation of liquid Piston manometer" is revised and issued, which redefines the measurement range and accuracy grade, puts forward the verification requirements of pressure deformation coefficient and defines the measurement of gravity acceleration, and improves the verification method and technical index. The verification regulation of precision cup-shaped and U-shaped liquid pressure gauges is revised and issued JJG 241-2022, which is widely used in precision machining, pressure (leakage rate) measurement in aerospace industry, leakage research and other fields. This revision improves the technical requirements of some standard instruments used in accuracy grade verification. Formulate and issue JJF 1986-2022 "Calibration Specification for differential pressure Air-tight leak detector", clearly stipulating the calibration items, calibration methods and the selection of standard instruments for this kind of instruments. The calibration items cover the main measurement performance, and the calibration methods are close to the actual working state of the instrument. Formulate and issue JJF 1987-2022 "Atmospheric data Tester Calibration Specification", change the current situation that there is no calibration standard for this type of instruments in China, improve the metering capacity of aircraft flight parameters, reduce the probability of aviation accident symptoms, increase the signing rate and attendance rate of airlines, and provide services to ensure civil aviation transportation.

In the field of temperature measurement, JJF 1991-2022 "short-type low-cost metal thermocouple calibration specification" is formulated and issued. Short-type low-cost metal thermocouple is widely used in aerospace, petrochemical and other fields, and is a commonly used temperature sensor. The specification mainly includes metrological characteristics, calibration conditions, calibration items, calibration methods and evaluation examples of measurement uncertainty, which provides a technical basis for the calibration of short-type low-cost metal thermocouples.

In the field of optical metrology, JJF 1988-2022 "Calibration Specification for Communication signal Analyzer" is formulated and issued. The communication signal analyzer is used to test the performance index of optical transmitter and pluggable optical transceiver module in optical communication system. The formulation and release of this specification creates favorable conditions for effectively carrying out quantity traceability. Formulate and issue JJF 1989-2022 "Calibration Specification for Spectral Illuminometer", define the metrological characteristics, calibration conditions and calibration methods of spectral illuminance meter, support the inspection and testing of electric light source product quality, and promote the high-quality development of electric light source, display and other industries. Formulate and issue JJF 1990-2022 "Calibration Specification for integral Ball Standard Light Source", which is a commonly used instrument for calibrating spectral radiometers, luminance meters and area array detectors. The formulation and issuance of this specification effectively ensures the accuracy and reliability of spectral radiation, luminosity and chromaticity in related fields.

In the field of electromagnetic measurement, JJG 126-2022 "Verification Regulation of Power Frequency AC Electric quantity Measurement transmitter" has been revised and issued. This revision improves the applicability of the regulation, solves the problem of value transmission of the new digital output transmitter, and helps to ensure the safe operation of smart city, intelligent manufacturing, automatic control and other fields. This revision broadens the scope of application, adjusts the assessment range of annual stability, simplifies the verification method of switch variation, highlights the scientific nature, rationality and applicability of verification items and methods, and improves the verification efficiency while ensuring the accuracy and reliability of verification conclusions. Formulate and issue JJG 1186-2022 "verification regulation of DC watt-hour meter verification device". As an important testing equipment of DC watt-hour meter, DC watt-hour meter verification device is directly related to the accuracy and reliability of DC energy metering. The formulation and release of this standard provides a basis for the verification of DC watt-hour meter verification device and provides technical support for DC energy measurement in electric vehicles, solar power generation and other fields. Formulate and issue JJF 1985-2022 "DC welder Welding Power Source Calibration Specification". As an equipment to provide output characteristics, the accuracy of its metering characteristics directly affects the quality of welding products. The formulation and release of this standard plays a positive role in improving the quality of welding products and ensuring the safety of related personnel and property.

In the field of high voltage measurement, JJF 1995-2022 "Calibration Specification for Electronic Transformer Calibrator" is formulated and issued. Electronic Transformer Calibrator is a special instrument for calibrating electronic transformer, which is widely used by transformer production enterprises and power grid construction units. the formulation and release of this specification has solved the problem of lack of unified traceability method for the digital value of electronic transformer for a long time. Further support the inspection and inspection of the product quality of the electronic transformer and provide metrological guarantee for the construction of a new power system.

In the field of time and frequency measurement, JJG 601-2022 "verification regulation of time calibrator" is revised and issued. Time calibrator is a multi-functional and comprehensive time verification equipment. This revision provides a more scientific and reasonable technical basis, so as to ensure that the value of time and frequency measurement instruments is accurate and reliable. Revised and issued JJF 1984-2022 "Calibration Specification for Quartz Crystal Oscillators in Electronic measuring Instruments", electronic measuring instruments generally use quartz crystal oscillators as the frequency source to generate signals. This revision puts forward calibration methods for measurement characteristics such as relative frequency deviation and frequency stability, which provides a scientific and standardized testing basis for quartz crystal oscillators in electronic measuring instruments, and ensures the accuracy and reliability of frequency value transmission.

In the field of meteorological metrology, JJF 1992-2022 "Calibration Specification for long Wave Radiometer" is formulated and issued to calibrate the metrological characteristics such as sensitivity of analog output long wave radiometer and correction coefficient of digital output long wave radiometer, so as to effectively ensure the accurate measurement of long wave radiation and net total radiation. The formulation and release of the specification provides a scientific and unified basis for the value traceability and performance evaluation of the long-wave radiometer.

In the field of energy measurement, JJF 1993-2022 "Technical Specification for Natural Gas Energy Metering" is formulated and issued. Energy measurement is the main way to transfer natural gas trade in the world, which is fully integrated with national standards. The calculation method of uncertainty of natural gas energy is given according to three different methods of calorific measurement (on-line measurement, off-line measurement and assignment). The specification can be used as a basis for the evaluation and acceptance of natural gas energy metering system by measurement technical institutions and for supervision and inspection by government departments, and can also be used as a reference for energy metering management of users such as oil and gas companies.

In the field of energy efficiency measurement, formulate and issue JJF 1994-2022 Calibration Specification for Energy efficiency (performance) measuring Devices of refrigerators, JJF 1261.27-2022 rules for Measurement and testing of Projector Energy efficiency, and revise and issue JJF 1261.6-2022 rules for Measurement and testing of Energy efficiency of computer displays. The refrigerator energy efficiency (performance) measuring device is the main equipment for measuring the performance parameters of refrigerators. the formulation and release of this standard accelerates the accurate consistency of measurement data between testing institutions and production enterprises. it plays a positive role in standardizing the labeling of energy efficiency labels of refrigerator products and even the development of refrigerator industry. Projectors and computer monitors are widely used as office and learning equipment, and their energy saving is of great significance. The revised content of this system includes the measurement requirements of energy efficiency of relevant products, test conditions, test items and methods, test results evaluation criteria, test reports, etc., while guiding consumers to buy high-efficiency and energy-saving products, encourage production enterprises to strengthen research and development, enhance consumer experience.

CTOnews.com learned that the above 24 national measurement technical specifications were formally implemented on March 26, 2023.

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