, pay attention to frequent calibration and testing
Toxic harmful gas detection instrument also with other of analysis detection instrument as, are is with relative comparison of method for determination of: first with a zero gas and a standard concentration of gas on instrument for calibration, are standard curve store Yu instrument among, determination Shi, instrument will to measuring gas concentration produced of signals with standard concentration of signals for comparison, calculation are accurate of gas concentration value. Therefore, the instrument to zero at any time, recurring to calibrate the instrument is to guarantee the instruments essential for accurate measurement of the work. It should be noted are: many gas detection sensor detector can be replaced, however, this does not mean that a detector can be completed with different detector probe at any time. At any time replace sensor activation of probe in addition requires a certain time, it is also necessary to recalibrate the instrument. In addition, it is recommended that before using various instruments, the instrument responds by standard gas detection to ensure that the instruments actually play a protective role.
2, the attention of various sensors detect interference
In General, each sensor corresponds to a specific detection of gases, but any type of gas detector can not be absolutely special effects. Therefore, when you select a gas sensor, you should learn as much as other gases on the sensors detect interference, to ensure accurate detection of it for a specific gas.
3, the attention of various types of sensor life
Gas sensors of all types have a certain age, that is life. In General, portable instruments, LEL sensor life expectancy is long, can be generally used about three years; photo ionization detector life of four years or longer; electrochemical gas sensor-specific life was relatively short, usually one to two years; oxygen sensor's life short, probably about a year. Life depends on the electrolyte of electrochemical sensors dries up, so if not for a long time, be sealed placed in low temperature environment, you can extend the life of a certain. Fixed instrument because of the relatively large size, long sensor life. Therefore, detection sensor at any time, to the extent possible in the period of validity of the sensor used, once expired, replaced in a timely manner.
4, the attention of detection equipment and the concentration range
Various types of toxic gas detector has its fixed detection range. Only in the context of its determination to complete measurement, can guarantee instrument accurately be measured. Exceed the measured range for a long time, it may cause permanent damage to the sensor.
For example, LEL detector, if you accidentally used over 100%LEL of environment, it is possible to completely burn the sensor. Toxic gas detector, working long hours at high concentrations may cause damage. Therefore, stationary when instruments are used if a super limited signal, to immediately close the measuring circuit, to ensure the security of sensors.
In short, toxic gas detector is a powerful tool for guaranteeing industrial safety and health. We want to use depending on the environment, as well as the features you want, select the appropriate gas detector. At present, we can choose instrumentation including fixed/portable, diffusion/suction pump-type, gas/gas, inorganic/organic gases, and so on a variety of combinations. Only select the right gas detection equipment, can they do more with less, before they happen.
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