An introduction to the main precautions when using a gas detector
The influence of temperature and humidity
When using a gas detector, it is important to pay attention to the usage environment. There are many factors that can affect the detection results of the gas detector, such as changes in humidity and temperature. The change in temperature will affect the actual amount of oxygen present in the atmosphere. If the temperature fluctuation in the workspace is large, the results detected by the gas detector may drift. In this case, the gas detector should be zeroed on site to minimize the impact of temperature on the detection results.
If the air humidity in the workspace increases, the water vapor in the air will drive away oxygen, causing the oxygen reading to drop. This effect may not be immediately detected, but after several hours, it will gradually affect the degree of oxygen and affect the detection results.
Therefore, when inspecting the air, we should pay attention to the temperature and humidity of the air in the workspace, and adjust the detector.
For gas detectors, they can play a role in detection and warning. If the combustible or toxic gases in the air exceed the standard, they can effectively alert people and take effective defense measures.
Detecting the impact of high gas concentration
All types of toxic and harmful gas detectors have their fixed detection range. Only by completing the measurement within its measuring range can the instrument ensure accurate measurement. However, measuring beyond the measurement range for a long time may cause long-term damage to the sensor.
Toxic gas detectors can also be damaged by prolonged use at high concentrations. In the presence of high concentration gases, the machine may not function properly.
The importance of returning to zero
The tester must be kept in good condition regularly, and after each test, it should be checked whether the instrument returns to zero. If it does not return to zero, it must be readjusted to zero in clean air to ensure accurate analysis data.
Pay attention to regular calibration and testing
Toxic and harmful gas detectors, like other analytical and detection instruments, use a relative comparison method for measurement: first, calibrate the instrument with a zero gas and a standard concentration gas, obtain a standard curve, and store it in the instrument. During measurement, the instrument compares the electrical signal generated by the concentration of the gas to be measured with the electrical signal of the standard concentration to calculate the accurate gas concentration value.
Therefore, zeroing the instrument at any time and regularly calibrating the instrument are essential tasks to ensure accurate measurement. It should be noted that many gas detectors currently have replaceable detection sensors, but this does not mean that a detector can be equipped with different detector probes at any time. Whenever replacing the probe, in addition to requiring a certain sensor activation time, the instrument must also be recalibrated. In addition, it is recommended that all types of instruments undergo response testing with standard gases before use to ensure that the instruments truly provide protection.
