What are the precautions for calibrating gas detectors during use
When calibrating a gas detector, the following precautions should be taken:
1. Calibration environmental conditions
Gas alarms are electronic instruments, and the errors in their calibration mainly come from the calibration environment. Good ventilation is required, and the measured component will not be disturbed during calibration. Its environment and temperature must reach a certain value.
2. Calibration flow control
Due to the fact that gas alarms are mostly catalytic combustion sensors, the flow rate directly affects the accuracy of the calibration results. Therefore, it is necessary to control the flow rate. Excessive or insufficient flow can affect the calibration results.
3. The main controller and on-site detector readings do not match during calibration
When the concentration of gas detector gas in the environment reaches or exceeds the preset alarm value, the main controller will issue an alarm to remind the on duty personnel to take safety measures, thereby ensuring the safety production of the enterprise.
4. Calibration cover for calibration
When calibrating combustible and toxic gas alarms, calibration covers are used, and each manufacturer has its own dedicated calibration cover. When calibrating, it is best to use original factory produced calibration covers, as the calibration results will be more accurate. In addition, to ensure detection accuracy, gas alarms should be calibrated at least once a year.
