Pay attention to the concentration measurement range of gas detection instruments
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 significant damage to the sensor.
For example, if the LEL detector is accidentally used in an environment with more than 100% LEL, it may completely burn out the sensor. Toxic gas detectors, when used at high concentrations for extended periods of time, can also cause damage. Therefore, if a fixed instrument emits an over limit signal during use, the measurement circuit should be immediately turned off to ensure the safety of the sensor.
In short, toxic and harmful gas detectors are powerful tools for ensuring industrial safety and the health of workers. We need to choose a suitable gas detector based on the specific usage environment and required functions. At present, there are various combinations of detectors available for us to choose from, including fixed/portable, diffusion/pump suction, single gas/multi gas, inorganic gas/organic gas, and more. Only by selecting suitable gas detection instruments can we truly achieve twice the result with half the effort and prevent problems before they occur.
Pay attention to the lifespan of various sensors:
All types of gas sensors have a certain service life, that is, lifespan. Generally speaking, in portable instruments, LEL sensors have a longer lifespan and can be used for about three years; The lifespan of the photoionization detector is four years or longer; The lifespan of electrochemical specific gas sensors is relatively short, usually between one to two years; The lifespan of oxygen sensors is short, about one year. The lifespan of electrochemical sensors depends on the drying of the electrolyte, so if they are not used for a long time, sealing them in a lower temperature environment can extend their service life to a certain extent. Fixed instruments have a relatively large volume and longer sensor lifespan. Therefore, sensors should be tested at all times and used within their effective period as much as possible. Once they fail, they should be replaced in a timely manner.
