What is the correct method for using a flammable gas detector?
1. Check the integrity of the equipment:
Carefully inspect the casing of the combustible gas detector for any signs of damage, cracks, or wear. If the casing is damaged, it may affect the sealing of the instrument, resulting in inaccurate test results or making the instrument more susceptible to external environmental interference. Check if the supporting accessories such as battery (if portable detector), charger, sampling tube (if any) are complete. Ensure that the battery is fully charged, and for rechargeable batteries, check if they are charging properly.
2. Calibration instrument:
The combustible gas detector needs to be calibrated regularly to ensure the accuracy of the detection results. As the usage time increases, the sensors of the instrument may drift, that is, the deviation between the detection results and the actual gas concentration will gradually increase. According to the operating manual of the instrument, use standard gas for calibration. Introduce a standard combustible gas of known concentration into the detector, and the instrument will automatically adjust its internal parameters based on the concentration of the standard gas to ensure that the detection results match the concentration of the standard gas. The calibration steps for different models of detectors may vary, so it is necessary to strictly follow the operation manual.
Operation during the detection process
1. Choose the appropriate detection location:
Select the detection location based on the characteristics of the gas to be tested. For example, for combustible gases that are lighter than air (such as hydrogen), the detector should be placed near the ceiling; For combustible gases heavier than air (such as liquefied petroleum gas), the detector should be placed near the ground. In industrial production scenarios, it is important to understand the possible locations of leakage sources, such as near pipeline interfaces, valves, and other areas that are prone to leakage.
2. Stability detector:
For portable combustible gas detectors, it is necessary to maintain the stability of the detector and avoid shaking during detection. Slowly approach the sensor part of the detector towards the detection area so that the gas can fully contact the sensor.
3. Avoid airflow interference:
Reasonably install the detector according to the airflow situation of the detection environment, avoiding direct impact of airflow on the sampling port or preventing the gas in the detection area from reaching the sampling port.
Maintenance after use
1. Cleaning equipment:
Wipe the casing of the combustible gas detector with a clean and soft cloth to remove surface dust, oil stains, and other stains. If the casing is severely dirty, it may affect the heat dissipation performance of the instrument or cause the operation buttons to be insensitive. Clean the sensor section according to the instructions in the manual. Some sensors cannot directly come into contact with water or organic solvents and can only use specific cleaning tools and reagents.
2. Storage equipment:
Store the combustible gas detector in a dry, well ventilated, and suitable temperature environment. Avoid storing in places with high temperature, high humidity, or corrosive gases.
3. Regular inspection:
Even when not in use, it is necessary to regularly (such as every other month) turn on the device to check its working condition, ensuring that the combustible gas detector can function properly when needed.
