Regarding the annual calibration of instruments
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How is the annual inspection of instruments in chemical enterprises determined? Do all pressure gauges need to be sent for inspection every year? Could some expert help provide a detailed explanation? Thank you
Items subject to mandatory inspection need to be sent for testing; those other items can be inspected by qualified persons
You can check it by yourself; no special qualifications are required. With a standard source, by following the conditions and steps specified in the calibration procedures and conducting calculations based on the operation records, it will be accurate. One has a butt; there’s no need for any special qualifications to defecate. .
You can check it by yourself; no special qualifications are required. With a standard source, by following the conditions and steps specified in the calibration procedures and conducting calculations based on the operation records, it will be accurate. One has a butt; there’s no need for any special qualifications to defecate. .
The pressure gauge must be inspected strictly every six months, and the thermometer every year. Others, such as traffic volume, are specified by period
For details, see the attachment: 1. A total of 10 types of pressure gauges in 3 categories are required to undergo mandatory calibration, with the calibration frequency being at least once every six months； 2. Pressure gauges that are not subject to mandatory calibration still need to be calibrated regularly, with the calibration interval to be determined by the enterprise itself ； 3. Whether pressure gauges for simple pressure vessels require mandatory calibration is determined by the date on which the vessels were put into use ； 4. The calibration of pressure gauges used in fixed-pressure vessels, industrial pipelines, and boilers shall comply with the regulations set by the **metrology authorities** ； 5. Pressure gauges used in chemical enterprises are classified into three grades: A, B, and C, with different calibration periods for each grade; pressure gauges used for monitoring do not require periodic calibration ； 6. If safety inspection officers discover that the pressure gauge has not been calibrated on a regular basis, they can refer the matter to the quality supervision department or require the enterprise to make corrections within a specified time frame; the safety inspection department should not impose administrative penalties.
Now, not only pressure gauges but all measuring instruments require periodic calibration or verification; it’s all a hassle: Q:Q:Q