Standards

JJF 2176-2024 Active

JJF 2176-2024 Calibration Specification for Portable Humidity Generators

This specification is applicable to the calibration of portable humidity generators that use a method of mixing dry gas and high-humidity gas to measure relative humidity in the range of 5% to 95%, and temperature in the range of 5℃ to 50℃.

Publish Date: 2024-10-19

JJF 2158-2024 Active

JJF 2158-2024 Program of Pattern Evaluation of Heat Meters

This outline is applicable to the type evaluation of heat meters with a nominal diameter not exceeding 50 mm, which are classified and coded as 12240000 and use water as the medium.

Publish Date: 2024-10-19

JJF 2159-2024 Active

JJF 2159-2024 Calibration Specification for Zero Gas Generators

This specification applies to the calibration of zero air generators (hereinafter referred to as generators) used by motor vehicle inspection and testing institutions.

Publish Date: 2024-10-19

JJF 2164-2024 Active

JJF 2164-2024 Calibration Specification for On-line Oscillation-type Liquid Density Meters

This specification is applicable to the calibration of online vibrating tube liquid density meters (hereinafter referred to as online density meters).

Publish Date: 2024-10-19

JJF 2166-2024 Active

JJF 2166-2024 Calibration Specification for Electronic Solid Density Balances

This calibration specification is applicable to the calibration of electronic solid density balances (hereinafter referred to as density balances).

Publish Date: 2024-10-19

JJF 2167-2024 Active

JJF 2167-2024 Calibration Specification for Pirani Vacuum Transmitters

This specification is applicable to the calibration of resistance vacuum transmitters with a measurement range of (1×10-1 to 1×105) Pa and below.

Publish Date: 2024-10-19

JJF 2169-2024 Active

JJF 2169-2024 Calibration Specification for Deuterium Lamps Spectral Irradiance(200 nm～400 nm)

This specification is applicable to the calibration of the spectral radiation illuminance of deuterium lamps in the wavelength range of 200 nm to 400 nm. The calibration of the spectral radiation illuminance of other types of UV light sources, such as xenon lamps, in the wavelength range of 200 nm to 400 nm can be carried out by referring to this specification.

Publish Date: 2024-10-19

JJF 2170-2024 Active

JJF 2170-2024 Calibration Specification for Laser Beam Analyzers

This specification is applicable to the calibration of laser beam analyzers with a beam width of (0.2 to 10) mm. The calibration of laser beam analyzers with other beam width ranges can be carried out by referring to this specification.

Publish Date: 2024-10-19

JJF 2172-2024 Active

JJF 2172-2024 Calibration Specification for Display Flicker or Response Time Meters

This standard applies to the calibration of various types of display flicker/response time measurement instruments with a flicker measurement range of (-80 to 0) dB, a flicker frequency measurement range of (1 to 120) Hz, and a response time measurement range of (0.1 to 200) ms. The calibration of display flicker/response time measurement instruments with other measurement ranges can be carried out in accordance with this standard.

Publish Date: 2024-10-19

JJF 2174-2024 Active

JJF 2174-2024 Calibration Specification for Low Transmittance Simulators of Polarimeters and Polarimetric Saccharimeters Calibration

This specification applies to the calibration of low-transmittance simulators used for the verification of polarimeters and polarimetric sugar meters.

Publish Date: 2024-10-19

JJF 2178-2024 Active

JJF 2178-2024 Calibration Specification for Volt-second Generators

This specification is applicable to the calibration of generators with a magnetic flux output range of 0.1 mWb to 10 Wb volt-seconds.

Publish Date: 2024-10-19

JJF 2160-2024 Active

JJF 2160-2024 Calibration Specification for Laser Confocal Microscopes

This specification is applicable to the calibration of laser confocal microscopes. The calibration of other microscopes based on the confocal principle can also refer to this specification.

Publish Date: 2024-10-19