In the field of gas detection and monitoring, gas detector, as a key safety equipment, plays a vital role. It can monitor the gas concentration in the environment in real time to ensure the safety of personnel and the smooth progress of the production process. However, when the gas detector shows negative pressure, it is often a warning signal that can not be ignored, which means that the detection instrument may encounter some abnormal situation in the measurement process. Then you know that gas detector shows negative pressure, what should you do? The following is an introduction by yi yun tian electronic editor:

When the gas detector displays negative pressure, check and deal with it according to the following steps:

1. instrument and environmental troubleshooting

(1) Check the instrument settings:

Ensure that the test parameters of the gas detector are set correctly, and there are no problems caused by misoperation or wrong settings.

(2) Check the ambient temperature:

Gas detectors generally operate within a specific temperature range. If the ambient temperature is too low, it may affect the detection result of the sensor and cause the negative pressure display. At this time, the gas detector can be placed in a normal temperature environment for a period of time, and then detected after it is recovered.

(3) Check the gas concentration:

In a polluted atmosphere, if the gas detector is zeroed and placed in clean air, it may cause negative readings due to the pollutant concentration at zero. At this time, it is necessary to confirm whether the zeroing of the gas detector is accurate and re-zeroing in an appropriate environment.

2. Troubleshooting Sensors