Gas detector maintenance and upkeep
1. Check the gas flow rate, usually 30 hours. Excessive or insufficient flow rate has a significant impact on the analyzer results
2. Replacing filter paper: Stop the air pump and drain the filter tank
3. Check for air leakage in the air circuit system. Check if the diaphragm of the sobbing pump is damaged, if the sealing ring of the sampling probe is broken, and if the four-way valve and condensate are damaged
4. Cleaning of sampling probe and dredging of sampling hole pipeline
5. Check whether the condenser works normally, and the temperature is usually adjusted within 3 ℃
6. Check the measuring chamber for dirt and clean it in a timely manner.
maintenance
1. Overall inspection: The detector should be checked regularly in normal times, and its signal current in clean air is DC4mA
2. Sensor maintenance: Generally, after installation and use for six months to a year, a re inspection and calibration should be carried out, and the testing party should issue a testing report.
3. When the sensor of the gas detector loses its sensitivity, it needs to be replaced. Regular calibration will determine whether the sensor has failed. When the calibration value cannot reach the standard gas value, the sensor needs to be replaced.
Precautions for daily use of gas detectors
1: The gas detector detects under normal working environment, and the sensor has a working life of more than two years
2: Prevent portable gas detectors from falling from heights or being subjected to severe vibrations
3: If the machine experiences no response for a long time, please turn off the power of the portable gas detector and restart it
4: Portable gas detectors need to be used in places that are free of corrosive gases, oil fumes, dust, and rainproof
5: To ensure measurement accuracy, portable gas detectors should be calibrated regularly, and the calibration cycle should not exceed one year
6: Do not allow portable gas detectors to frequently come into contact with high concentration gases above the detection range, and do not collide or disassemble the sensor, otherwise the sensor's working life may be lost
