1、 Sampling system malfunction

‌Insufficient sampling traffic:‌

‌reason‌Filter element, heat tracing tube or sampling tube are blocked, solenoid valve or sampling pump is abnormal‌.

‌handle‌Check and clear the blocked components, clean or replace the filter element‌.

‌Leakage leads to abnormal data:‌

‌phenomenon‌: Increase in oxygen contentSO₂Decrease, or false high humidity measurement value‌.

‌handle‌：Check the sealing of sampling pipelines and joints, and repair the leakage points‌.

2、 Preprocessing system issues

‌Condenser malfunction:‌

‌performance‌Instantly high humidity and poor drainage lead to data fluctuations‌.

‌solve‌Check the temperature control of the condenser（1-7℃）Clean the ice or replace the heating element‌.

‌Abnormal drainage of peristaltic pump:‌

‌influence‌Residual moisture causes humidity measurement to return to zero or repeatedly jump‌.

‌optimizeenhanceimproverefine‌

Shorten the length of the drainage pipeline and replace the aging pump pipe

‌.3、 Sensor and instrument malfunction

‌Sensor contamination or aging:‌‌symptom‌

: Data drift, response delay, or full-scale error‌.‌maintenance‌

Regularly clean the mirror surface (such as resistive capacitive sensors), replace the light source or chamber‌.

‌Environmental interference:‌‌

Temperature and humidity influence

‌Temperature compensation should be enabled in high temperature and high humidity environments to avoid sensor corrosion.4、 Data exception handling‌Calibration failure‌

Re calibrate with standard gas and check parameter settings‌.‌software glitch‌

Restart the device or update system logs to troubleshoot signal transmission issues

‌.5、 Typical scenario cases‌

Monitoring of desulfurization system‌The humidity alarm can prevent liquid water from corroding equipment and needs to be checked regularly.‌Portable instrument‌