【Daily Question 20090226】What are the instruments subject to mandatory inspection in your company?
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Mandatory verification refers to the regular and designated inspections carried out by statutory metrology verification institutions appointed by the metrology administrative departments of people’s governments at or above the county level, or by authorized metrology verification institutions, on social public metrology standards, the highest metrology standards used by departments, enterprises, and institutions, as well as working measuring instruments that are included in the list for mandatory verification and are used in areas such as trade settlement, safety protection, healthcare, and environmental monitoring. Chemical plants are equipped with many instruments, each serving various purposes. Please list the instruments that are subject to mandatory calibration along with their uses.
Our transmitters need to be calibrated every 12 months. Thermocouples and thermistors also require calibration every 12 months, while pressure gauges need to be calibrated every 6 months. Turbometers used for measuring natural gas, which are related to settlements with natural gas companies, must be calibrated in Beijing or Shanghai once a year.
The pressure gauge needs to be checked every 6 months, the thermometer as well every 6 months, while combustible gas and toxic gas detectors require inspection once a year
Flammable gas and toxic gas alarms should be checked once a year
Our transmitters are calibrated every 12 months. Thermocouples and thermal resistors also require calibration every 12 months, while pressure gauges need to be calibrated every 6 months. As for the turbine flowmeters used for measuring natural gas, since this involves settlements with natural gas companies, they must be calibrated in Beijing or Shanghai once a year
Flammable gas and toxic gas detectors need to be checked once a year – this is what I remember most clearly: lol
Gauge for hydraulic testing. :lol
The pressure gauge needs to be checked every 6 months, the thermometer as well every 6 months, while combustible gas and toxic gas detectors require inspection once a year
Our workshop has only 4 pressure gauges of grade B that are inspected once a year; the rest are of grade C
Gas detectors for flammable and toxic gases need to be checked once a year, while vortex flowmeters for steam and natural gas also require inspection once a year as part of the billing process
Gas detectors for flammable and toxic gases need to be checked once a year, while vortex flowmeters for steam and natural gas also require inspection once a year as part of the billing process
Class A pressure gauges should be calibrated every 6 months； Class B pressure gauges every 1 year ； Flammable and toxic gases – once a year ； Thermocouples and resistors every 1 year.
The pressure gauge has a lifespan of 6 months, while the combustible gas and toxic gas alarms are inspected either by ourselves or by third parties
The transmitters need to be calibrated every 12 months. Thermocouples and thermal resistors also require calibration every 12 months. Class A pressure gauges need to be calibrated every 6 months； Class B pressure gauges require inspection once a year, while combustible gas and toxic gas detectors also need to be inspected once a year
List of Working Measuring Instruments Subject to Mandatory Verification in the People’s Republic of China (issued by the Bureau of Metrology on May 28, 1987) I. In accordance with Article 16 of the Regulations on the Management of the Verification of Working Measuring Instruments Subject to Mandatory Verification in the People’s Republic of China, this list is established. II. The measuring instruments listed in this catalog are the specific items included in the \"Catalogue of Working Measuring Instruments Subject to Compulsory Verification in the People’s Republic of China\". For the items listed in this catalog that are used for trade settlement, safety protection, medical and health services, and environmental monitoring, mandatory inspection is required. Specific items are: 1. Rulers: bamboo and wooden rulers, sleeve rulers, steel tape measures, steel tape measures with hammers, railway gauge rulers ； 2. Area meter: Leather area meter ； 3. Glass liquid thermometer: Glass liquid thermometer ； 4. Thermometer: Thermometer ； 5. Petroleum flash point thermometer: Petroleum flash point thermometer ； 6. Petroleum flash point thermometer: Petroleum flash point thermometer ； 7. Calorimeter: Calorimeter ； 8. Brick weights: weights, chain weights, additional counterweights, fixed-quantity thallium weights ； 9. Balance: Balance ； 10. Scales: beam scales, balance scales, counter scales, platform scales, floor scales, belt scales, hanging scales, electronic scales, luggage scales, postal scales, scales for pricing and charging, grain vending machines ； 11. Quantitative packaging machine: Quantitative packaging machine, quantitative filling machine ； 12. Track scale: Track scale ； 13. Grain density meter: Instrument for measuring the density of grains ； 14. Metering tanks, metering tank trucks: vertical metering tanks, horizontal metering tanks, spherical metering tanks, road-based metering tank trucks, rail-based metering tank trucks, ship-based metering tanks ； 15. Fuel filler: Fuel filling machine ； 16. Increase in liquid volume: Increase of liquid amount ； 17. Cooking oil dispenser: Cooking oil selling device ； 18. Alcohol meter: Alcohol meter ； 19. Density meter: Density meter ； 20. Sugar meter: Sugar meter ； 21. Milk meter: Float meter ； 22. Gas meter: Gas meter ； 23. Water meter: Water meter ； 24. Flow meters: liquid flow meters, gas flow meters, steam flow meters ； 25. Pressure gauges: pressure gauges, air pressure gauges, oxygen gauges ； 26. Sphygmomanometer: Blood pressure monitor, sphygmometer ； 27. Tonometer: Tonometer ； 28. Car odometer: Car mileage meter ； (Cancelled) 29. Taxi mileage meter: Taxi mileage meter ； 30. Speed meter: Highway management speed monitoring device ； 31. Vibration meter: Vibration monitoring device ； 32. Electric energy meters: single-phase electric energy meters, three-phase electric energy meters, time-of-use electric energy meters ； 33. Measurement transformers: current transformers, voltage transformers ； 34. Insulation resistance and ground resistance meters: Insulation resistance meters, ground resistance meters ； 35. Field strength meter: Field strength meter ； 36. ECG, EEG machines: ECG machines, EEG machines ； 37. Dosimeter (including medical radiation sources): Dosimeter, medical radiation sources ； 38. Ionizing radiation protection devices: radiation monitors, dose rate meters, radioactive surface contamination detectors, personal dosimeters ； 39. Activity meter: Activity meter ； 40. Laser energy, power meters (including medical laser sources): Laser energy meters, laser power meters, medical laser sources ； 41. Ultrasonic power meter (including medical ultrasonic source): Ultrasonic power meter, medical ultrasonic source ； 42. Sound level meter: Sound level meter ； 43. Audiometer: Audiometer ； 44. Hazardous gas analyzers: CO analyzer, CO2 analyzer, SO2 analyzer, hydrogen detector, hydrogen sulfide detector ； 45. pH meter: pH meter, blood gas acid-base balance analyzer ； 46. Gas meter: Gas alarm, gas detector ； 47. Mercury detector: Mercury vapor analyzer ； 48. Flame photometer: Flame photometer ； 49. Spectrophotometers: Visible light spectrophotometers, ultraviolet spectrophotometers, infrared spectrophotometers, fluorescence spectrophotometers, atomic absorption spectrophotometers ； 50. Colorimeter: Filtered photometric colorimeter, fluorescent photometric colorimeter ； 51. Smoke and dust measuring instruments: Smoke measuring instrument, Dust measuring instrument ； 52. Water quality pollution monitors: water quality monitors, comprehensive water quality analyzers, cyanide detectors, dissolved oxygen meters ； 53. Exhaled breath alcohol detector: Exhaled breath alcohol content detector ； 54. Hemocytometer: Electronic hemocytometer ； 55. Refractometer: Refractometer. 56. Electronic timing billing device: Telephone timing billing device ； 57. Cotton moisture meter: Cotton moisture measuring device ； 58. Optometer: Optometer, optometric lens set ； 59. Microwave Radiation and Leak Meter: Microwave Radiation and Leak Meter. 60. Gas filling station: Gas filling machine ； 61. Heat meter: Heat meter.
Transmitters are calibrated every 12 months; thermocouples and thermal resistors also require calibration every 12 months. Pressure gauges need to be calibrated every 6 months, while turbine flowmeters need to be calibrated once a year. CO analyzers, CO2 analyzers, SO2 analyzers, hydrogen detectors, and hydrogen sulfide detectors require calibration every 6 months
Thermocouples and resistors are to be inspected once a year； Class A pressure gauges should be inspected every 6 months ； Class B pressure gauges shall be inspected once a year ； Flammable and toxic gases require inspection once a year ； The flow meter should be inspected once a year.
The pressure gauge needs to be checked every 6 months, the thermometer as well every 6 months, while combustible gas and toxic gas detectors require inspection once a year
The equipment subject to mandatory inspection in our company includes electronic vehicle scales, electronic scales in the finished products workshop, pressure gauges on pressure vessels, and standard instruments in the metrology room.
Total air flow meter------for settlement in power plants; electronic scales for finished products------for trade settlements; truck scales--------------for settling large-volume goods transactions; standards (weights, precision pressure gauges, resistance boxes, and various other standards used for calibration)----for traceability of measurement values. Flammable (toxic) gas alarm sensor---Safety
It seems that our company doesn’t have anything that requires mandatory inspection, as we’re not involved in measurement activities