Standards

JJG 2044-2010 Replaced

JJG 2044-2010 Metrological Instruments for Air Kerma of γ Rays

This verification system is suitable for gamma-ray therapy levels [with an air dose rate of approximately (001~10) Gy/min], protection levels [with an air dose rate of approximately (1×10-6~1) Gy/h], and environmental levels [with an air dose rate of approximately (1×10-8~1×10-4) Gy/h] of air dose rate measurement instruments. It includes the procedures, methods, and optimal measurement capabilities for transferring values from gamma-ray air dose rate reference measurement instruments to working measurement instruments through standard measurement instruments. When conducting gamma-ray air dose rate calibration projects, this verification system can serve as a basis for traceability of values.
The gamma-ray air dose rate measurement instrument verification system consists of reference measurement instruments, standard measurement instruments, and working measurement instruments. The gamma-ray air dose rate reference measurement instruments transfer values to working measurement instruments through standard measurement instruments, ensuring the accuracy and uniformity of air dose rate values in China.

Publish Date: 2010-09-06

JJG 237-2010 Replaced

JJG 237-2010 Stopwatches

This procedure applies to the initial verification, subsequent verification, and in-use inspection of stopwatches (electronic stopwatches, mechanical stopwatches, pointer-style electronic stopwatches, and digital electronic stopwatches).

Publish Date: 2010-09-06

JJG 1058-2010 Replaced

JJG 1058-2010 Laboratory Oscillation-type Liquid Density meters

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of laboratory vibration-type liquid density meters (including desktop vibration tube density meters and handheld vibration tube density meters, hereinafter referred to as density meters) with a density range of (650～3 000) kg/m3.

Publish Date: 2010-06-10

JJG 2094-2010 Replaced

JJG 2094-2010 Measuring Instruments for Density

This verification system table is applicable to the transfer of measurement values for density measuring instruments. It specifies the procedures and methods for transferring measurement values from the national density standard to working measuring instruments through metrological standards, and provides the corresponding expanded uncertainty or maximum allowable error. This system table provides guidance to ensure that density measuring instruments meet the corresponding technical specifications and confirm their traceability.

Publish Date: 2010-06-10

JJG 579-2010 Replaced

JJG 579-2010 Trial Case Lenses

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of all types of full-aperture and reduced-aperture optical lens boxes.

Publish Date: 2010-05-11

JJG 58-2010 Replaced

JJG 58-2010 Radius Gauges

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of radius gauges with a radius of 1 mm to 25 mm.

Publish Date: 2010-05-11

JJG 1051-2009 Replaced

JJG 1051-2009 Electrolyte Analyzers

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of medical electrolyte analyzers that use ion-selective electrodes to determine the concentration of K+, Na+, and Cl- ions.

Publish Date: 2009-10-09

JJG 292-2009 Replaced

JJG 292-2009 Rubidium Atomic Frequency Standards

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of rubidium atomic frequency standards (hereinafter referred to as rubidium frequency standards, including rubidium atomic frequency standards controlled by GNSS).

Publish Date: 2009-07-10

JJG 379-2009 Replaced

JJG 379-2009 Wide Range Dauges Reading in 0.01 mm

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of dial-type or digital-display large-range dial gauges with a measuring range of more than 10 mm and less than or equal to 100 mm, and a graduation value/resolution of 0.01 mm.

Publish Date: 2009-07-10

JJG 517-2009 Replaced

JJG 517-2009 Taximeters

This regulation applies to the type evaluation, initial inspection, follow-up inspection, and in-use inspection of taxi meters (hereinafter referred to as "meters").

Publish Date: 2009-07-10

JJG 906-2009 Replaced

JJG 906-2009 Roller Opposite Force Type Brake Testers

This procedure is applicable to the initial verification, subsequent verification, and in-service inspection of roller counter-force brake test stands used for motor vehicle inspections (hereinafter referred to as brake test stands).

Publish Date: 2009-07-10

JJG 908-2009 Replaced

JJG 908-2009 Automobile Side Slip Tester

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of the skateboard-style automobile side-slip test bench (hereinafter referred to as the side-slip test bench).

Publish Date: 2009-07-10