The catalogue contains a variety of measuring instruments, including straightedge, area meter, glass liquid thermometer, thermometer, petroleum flash point thermometer, grain moisture analyzer, calorimeter, weight, balance, scale, quantitative packaging machine, track scale, bulk densimeter, measuring tank, measuring tank car, tank car, floating weight extractor, edible oil dispenser, alcohol meter, densimeter, sugar meter, milk meter, etc.
Water meter, flowmeter, pressure gauge, sphygmomanometer, tonometer, taxi odometer, speedometer, vibration meter, watt-hour meter, measuring transformer, insulation resistance, grounding resistance meter, field strength meter, electrocardiograph, electroencephalograph, exposure meter (including medical radioactive source), ionizing radiation protection instrument, activity meter, etc. In order to ensure the accuracy and safety of measuring instruments, the above measuring instruments need to be calibrated regularly.
Among them, weights, balances, scales, track scales, bulk scales, measuring tanks, metering tankers, fuel tankers and other measuring instruments are widely used in trade settlement, so verification is particularly important. Measuring instruments in the medical and health field, such as sphygmomanometer, tonometer, heart and electroencephalograph, are very important to patients' health and life safety, so they should also be tested regularly.
Inspection period of compulsory verification measuring instruments
According to the relevant provisions of the National Metrology Law, measuring instruments should be used within the time specified in the verification period, and must not be used beyond the verification period, and must be re-verified. All kinds of measuring instruments have corresponding verification regulations, and the verification period is stipulated in the verification regulations. Personnel who perform the verification and testing tasks specified in the preceding paragraph at the same time must pass the examination.
For compulsory inspection instruments, the verification period generally does not exceed one year, and some even strictly stipulate that it does not exceed half a year. You can check the verification certificate of the measuring instruments used, which stipulates the validity period. Before the validity period, the instrument should be sent to the designated verification department for verification. Over the period of validity, shall not be used again.
Reference to the above contents: Baidu Encyclopedia-Administrative Measures for Compulsory Verification of Measuring Instruments in People's Republic of China (PRC)