Standards

JJG 1012-2006 On-line Automatic Determinator of Chemical Oxygen Demand(COD)

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of online automatic monitors (hereinafter referred to as "instruments") for measuring chemical oxygen demand (COD) in the range of (30 to 1,000) mg/L.

Publish Date: 2006-05-23

JJG 545-2006 Frequency Comparator

This procedure applies to the initial verification, subsequent verification, and in-use inspection of frequency standard comparators based on frequency difference multiplication technology.

Publish Date: 2006-05-23

JJG 603-2006 Frequency Meters

This regulation applies to all pointer-type frequency meters and digital-display frequency meters with a frequency measurement range of 10Hz to 20kHz, as well as industrial frequency counters (hereinafter referred to as frequency meters), for their initial verification, subsequent verification, and inspection during use.

Publish Date: 2006-05-23

JJG 686-2006 Hot Water Meter

This procedure applies to the type evaluation, initial verification, subsequent verification, and in-service inspection of hot water meters.

Publish Date: 2006-03-08

JJG 1008-2006 Master Gears

This procedure specifies the inspection items, inspection requirements, and inspection methods for standard gears, and is applicable to the initial and subsequent inspections of standard gears.
The calibration of gears can also be carried out in accordance with this procedure.

Publish Date: 2006-03-08

JJG 1009-2006 Direct reading Personal dose equivalent(rate) Monitors for X and Gamma Radiation

Publish Date: 2006-03-08

JJG 326-2006 Standard Equipment for Revolution Speed

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of speed standard devices with a speed range of (30 to 6×104) r/min and a relative expanded uncertainty of 1×10-3 to 1×10-5 (k=3).

Publish Date: 2006-03-08

JJG 443-2006 Fuel Dispensers

This regulation applies to the type evaluation, initial inspection, follow-up inspection, and in-use inspection of fuel dispensers (hereinafter referred to as "dispensers"). It also applies to the type evaluation of flow measurement converters in dispensers.

Publish Date: 2006-03-08

JJG 521-2006 X and Gamma Radiation Air Kerma Ratemeters for Environmental Monitoring

This regulation applies to the initial verification, subsequent verification, and in-use inspection of portable, mobile, or fixed instruments for measuring environmental X-ray and gamma radiation air kerma rates (absorbed dose rates) (hereinafter referred to as air kerma rate instruments).
The range of air kerma rates for X-ray and gamma radiation is 30 nGy/h to 10 μGy/h, and the radiation energy range is 50 keV to 15 MeV (for instruments that may be used to measure high-energy photons around nuclear reactors, the radiation energy range also includes a photon energy verification point of 6 MeV). This regulation also applies to instruments that use ionization current, count rate, or other integration methods to measure and display average air kerma rates over a certain period of time.
This regulation does not apply to the verification of instruments for measuring environmental X-ray and gamma radiation air kerma (cumulative dose) rates; nor does it apply to the verification of thermoluminescence dosimeters or other passive measurement devices, as well as beta radiation instruments.

Publish Date: 2006-03-08

JJG 570-2006 Capacitance Comparators

This procedure is applicable to the initial verification, subsequent verification, and in-service inspection of capacitive micrometers with a measuring range not exceeding 2000μm and a resolution of 1nm to 0.05μm.

Publish Date: 2006-03-08

JJG 593-2006 Thermoluminescence Dosimetry Systems Used in Personal and Environmental Monitoring for X and Gamma Radiation

This regulation applies to the initial verification, subsequent verification, and in-use inspection of X〖DK〗 and γ radiation thermoluminescence dose measurement〖DK〗 (devices〖DK〗) systems〖DK〗 (hereinafter referred to as systems〖DK〗) used for personal monitoring and environmental monitoring. The photon energy range is 15 keV to 30 MeV.
This regulation does not apply to the separate verification of X〖DK〗 and γ radiation thermoluminescence dosemeters used for personal monitoring and environmental monitoring.
This regulation does not apply to devices used for personal monitoring that are equipped with limb dosemeters, nor to the verification of devices used to measure β radiation, neutron radiation, and cosmic ray radiation.

Publish Date: 2006-03-08

JJG 741-2005 Standard Steel Tapes

This procedure is applicable to the initial verification, subsequent verification, and in-use inspection of standard steel tape measures.

Publish Date: 2005-12-20