Gas detectors are instruments, and thus proper maintenance should be conducted when in use. What specific maintenance tasks are involved in the care of gas detectors?
Regular maintenance
As the sensors of gas detectors are measuring instruments, they may experience detection deviations over time. Therefore, it is necessary to regularly calibrate the gas detectors to correct such deviations, which is commonly referred to as calibration.
According to the requirements of the Safety Equipment Association, there is no fixed deadline for periodic calibration. It is determined based on the actual environment and frequency of use of the gas detector. As long as the instrument fails the rapid test, it indicates that the sensor deviation has become too great, which will affect the detection results and calibration is required.
To facilitate users in effectively managing gas detectors, we generally recommend that customers perform a regular maintenance service on their gas detectors at least every six months, which includes calibration.
In addition, for pump aspirated gas detectors, there is a need for additional regular maintenance, which includes periodic checks of the pump aspirating system's filter device (primarily inspecting the internal filter membranes of the pump aspirating products to determine if they have failed. The method of determining failure is by observing the color change of the filter membranes; a clean membrane is pure white, while a failed filter membrane is yellowish-black).
Regular Maintenance
Routine maintenance primarily involves inspecting the overall appearance and integrity of the gas detectors, as well as checking the battery levels. Additionally, to ensure the accuracy of the gas detectors, rapid tests must be conducted to verify the correct and accurate response of the instrument sensors to gases.
For instruments equipped with built-in pumps, a leak test of the pump suction system is required (specific procedure: after powering on the instrument, block the air intake terminal of the pump suction system, such as the top of the sampling probe, until the instrument emits a pump flow blockage alarm. This indicates that the instrument's pump suction system has normal airtight performance; otherwise, the instrument should not be used).
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