Standards

JJG 818-2005 Magnetic and Eddy Current Measuring Instrument for Coating Thickness

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of magnetic (magnetoresistive and magnetic) coating thickness gauges and eddy current coating thickness gauges (hereinafter collectively referred to as thickness gauges).

Publish Date: 2005-12-20

JJG 875-2005 Digital Pressure Gauges

This procedure is applicable to the initial verification, subsequent verification, and in-service inspection of digital pressure gauges with a pressure range of (-0.1 to 250) MPa (hereinafter referred to as "pressure gauges").

Publish Date: 2005-12-20

JJG 1005-2005 Electronic Insulating Resistance Meters

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of electronic insulation resistance meters with a measurement range not exceeding 500 GΩ and a rated voltage of less than 10 kV.

Publish Date: 2005-10-09

JJG 1004-2005 Hydrogen Atomic Frequency Standards

This procedure is applicable to the initial verification, subsequent verification, and in-service inspection of hydrogen atom frequency standards.

Publish Date: 2005-09-05

JJG 119-2005 Laboratory pH Meters

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of pH (acidity) meters and general laboratory ion meters that can be used as pH (acidity) meters (hereinafter referred to as "instruments").

Publish Date: 2005-09-05

JJG 168-2005 Vertical Metal Tank Capacity

This procedure applies to the initial inspection, subsequent inspections, and in-service inspections of vertical metal tanks (including floating roof tanks) with a capacity of more than 20 m3.

Publish Date: 2005-09-05

JJG 181-2005 Quartz Crystal Frequency Standards

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of quartz crystal frequency standards (including GPS-controlled quartz crystal frequency standards).

Publish Date: 2005-09-05

JJG 999-2005 Dgital Liquid Density Meter-Weighed Method

Publish Date: 2005-09-05

JJG 633-2005 Gas Displacement Meters

This procedure is applicable to the type evaluation or prototype testing, initial verification, subsequent verification, and in-service inspection of gas volume flowmeters (including gas vane flowmeters, rotary piston gas flowmeters, and wet gas flowmeters, hereinafter referred to as flowmeters). This procedure is not applicable to the verification of diaphragm gas meters.

Publish Date: 2005-04-28

JJG 176-2005 Sound Calibrators

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of LS-grade (laboratory standard), Class 1, and Class 2 sound calibrators.

Publish Date: 2005-04-28

JJG 387-2005 Coaxial Attenuator

This procedure is applicable to the initial verification, subsequent verification, and in-service inspection of coaxial resistive attenuators.

Publish Date: 2005-04-28

JJG 444-2005 Standard Rail-weighbridges

This regulation applies to the initial and subsequent inspections of standard rail weighbridges.

Publish Date: 2005-04-28