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Jurong Tiandao Instrument Co., Ltd
Troubleshooting of common problems with civil air quality monitoring equipment: data deviation, sensor failure, and low battery warning fault resolution
Date: 2025-10-21Read: 0
The air quality detector for civil air defense is an important equipment to ensure the safety of air quality in enclosed spaces, which can monitor the concentration of harmful gases and particulate matter in the air in real time. However, during use, common issues may arise such as data bias, sensor failure, and low battery warning faults. If these issues are not resolved in a timely manner, they may affect the accuracy of monitoring data and the normal operation of equipment. This article will provide a detailed introduction to the troubleshooting and solutions for these issues.
1、 Data bias
Data deviation refers to the discrepancy between the monitoring data displayed by the detector and the actual air quality, which may be caused by improper sensor calibration, environmental interference, or equipment failure.
Check calibration status
Ensure that the detector has been calibrated. If the device is not calibrated for a long time, it may lead to data deviation. According to the equipment manual, perform regular calibration to ensure the accuracy of the sensor.
Check for environmental interference
Ensure that the detector is placed in an interference free environment. Strong electromagnetic fields, high temperatures, or high humidity environments may affect the performance of sensors, leading to data bias. If the detector is placed in an interference environment, it is recommended to move it to another location.
recalibrate
If there is suspicion of data bias, standard gas can be used for recalibration. The concentration of standard gas is known and stable, which can be used to verify the accuracy of the detector. Perform calibration operations according to the equipment manual to ensure the calibration process is correct and error free.
Check the sensor status
Check if the sensor is clean, free from dirt or blockage. If there is dirt or blockage on the surface of the sensor, it may affect its performance and cause data deviation. Gently wipe the surface of the sensor with a soft cloth or specialized cleaning agent to ensure its cleanliness.
2、 Sensor failure
Sensor failure refers to the inability of the detector's sensor to function properly and accurately measure air quality. This may be caused by sensor aging, damage, or contamination.
Check the sensor status
Check if the sensor is clean, free from dirt or blockage. If there is dirt or blockage on the surface of the sensor, it may affect its performance and cause sensor failure. Gently wipe the surface of the sensor with a soft cloth or specialized cleaning agent to ensure its cleanliness.
Check the sensor connection
Ensure that the connection wires of the sensor are secure and free from looseness or damage. If the connecting wire is loose or damaged, it may cause the sensor to malfunction. Check the integrity of the connecting wires and replace damaged ones if necessary.
Check the lifespan of the sensor
Understand the service life of sensors. Sensors may age during long-term use, leading to a decrease in performance. If the sensor is approaching its service life, it is recommended to replace it with a new sensor to ensure the accuracy of monitoring data.
Contact technical support
If you suspect that the sensor is malfunctioning, you can contact the technical support team of the device. Provide the model and fault symptoms of the equipment for technical support personnel to quickly diagnose problems and provide solutions.
3、 Low battery warning fault
Low battery warning fault refers to the inability of the detector to issue a low battery warning when the battery is low, which may be caused by battery aging, power detection circuit failure, or incorrect settings.
Check the battery status
Ensure that the battery is fully charged. If the battery is low, it may cause a low battery warning malfunction. Check the battery level indicator light to ensure it is displaying properly. If the battery is low, charge it promptly.
Check the power detection circuit
Check if the power detection circuit is working properly. If the power detection circuit malfunctions, it may result in inaccurate low battery warning. A multimeter can be used to check the voltage and current of the power detection circuit to ensure its normal operation.
Check warning settings
Ensure that the low battery warning setting is correct. If the warning settings are incorrect, it may result in inaccurate low battery warning. Enter the device's settings menu and check if the low battery warning threshold is set correctly. Adjust the low battery warning threshold according to the device manual to ensure it is within a reasonable range.
Replace the battery
If the battery ages, it may cause a low battery warning malfunction. Check the service life of the battery. If the battery is approaching its service life, it is recommended to replace it with a new one to ensure the normal operation of the device.
4、 Conclusion
The air quality detector for civil air defense plays an important role in ensuring air quality and safety in enclosed spaces, but problems such as data deviation, sensor failure, and low battery warning faults may arise during use. By checking the calibration status, environmental interference, sensor status, battery status, and warning settings, these issues can be effectively resolved to ensure the accuracy of monitoring data and the normal operation of equipment.