Gas detectors in different applications
Determine the use of occasions: the different industrial environment, the choice of gas detector type is also different.
A) Fixed gas detector:
This is a more commonly used detector on industrial installations and in production processes. It can be installed at a specific detection point to detect a specific gas leak. Fixed detector is generally two-body type, there are sensors and transmission composed of the detection head as a whole installed in the detection site, there are circuits, power supply and display alarm device composed of secondary instrumentation as a whole installed in the safety of the place, easy to monitor.
Its detection principle as described in the previous section, only in the process and technology is more suitable for fixed detection required by the continuous, long time stability and other characteristics. They should also be selected according to the type and concentration of the gas on site, but also pay attention to the installation of them in the specific gas is most likely to leak parts, such as the specific gravity of the gas to choose the sensor installed * effective height and so on.
B) Portable gas detector:
As portable instruments are easy to operate, compact size, can be carried to different parts of the production, electrochemical detector using alkaline battery power supply, can be used for 1000 hours of continuous use; new LEL detector, PID and composite instruments using rechargeable batteries (some have been used without memory nickel-metal hydride or lithium-ion batteries), so that they generally can be worked continuously for nearly 12 hours, so as this type of instrument in the Therefore, as this type of instrument in all kinds of factories and health departments are more and more widely used.
