A gas detector is a device used to measure and monitor the concentration of gases in the environment. They are widely used in industry, safety, environmental protection and scientific research. However, there are some things that need to be noted when using a gas monitor to ensure the accuracy and safety of the instrument.
Read the Manual
Before you start using the gas detector, read the user manual and technical specifications provided by the manufacturer in detail. Different models of gas monitors may have different functions and operations, familiarize yourself with the following:
- Working principle and sensor type of gas detector.
- Proper operating procedures, including opening, closing, calibration and maintenance.
- Gas detectors can monitor the gas type and concentration range.
- Alarm type and alarm threshold.
Pay Attention to Calibration
The core component of the gas detector is the sensor, which has been counting down the service life since it was manufactured. Even if you don't use the gas detector, it needs to be calibrated regularly to ensure the accuracy of the detection results:
- Use the manufacturer's recommended standard or calibration gas for calibration.
- Perform calibration in a safe environment to ensure there are no potential gas leaks.
- Regularly check the expiry date of the calibration gas and replace it as required.
Pay Attention to the Interference of Gases
Generally speaking, each sensor corresponds to a specific detection gas, but it does not mean that the detection effect of any gas detector is absolute. Therefore, when using a gas detector, you should be aware of the interference of other gases on the detection of the sensor to ensure its accurate detection of specific gases.
Note the Concentration Range
All types of gas detectors have a fixed detection range. Only when the measurement is completed within the effective range, can ensure that the instrument can accurately carry out the measurement. Measuring outside the range for a long time may damage the sensor. For example, LEL gas detector, if inadvertently used in an environment of more than 100% LEL, it is possible to completely burn out the sensor. And toxic gas detectors, working for a long time at higher concentrations can also cause damage.
Pay Attention to Maintenance
Regular maintenance of the instrument is the key to ensure its normal operation. Firstly, the instrument needs to be cleaned regularly to maintain the sensitivity and responsiveness of the sensors; secondly, the sensors should be replaced and the battery status should be checked regularly to ensure that the gas detector can be used for a long time. Regular maintenance extends the life of the gas monitor and ensures reliable performance.
Attention to the Sensor Life
All kinds of gas sensors have a certain service life. The service life of the gas detector mainly depends on the sensor. Among gas monitors, LEL sensors have a long life and can generally be used for about three years. Photo-ionization detectors have a service life of four years or more. The main influence on the life of the electrochemical sensor is the electrolyte, which has a service life is 1 to 2 years; if it is not used for a long time, sealing it and putting it in a lower temperature environment can prolong its service life to a certain extent. The Oxygen sensor has the shortest service life, about one year. Fixed gas monitor due to the relatively large size, the sensor service life is also longer. Therefore, it is necessary to detect the sensor at any time, and pay special attention to the service life.