What is the difference between fixed gas detectors and portable gas detectors
According to different installation and usage methods, gas detectors can be divided into portable gas detectors and fixed gas detectors. Fixed gas detectors and portable gas detectors are detection instruments developed in different usage environments to facilitate gas monitoring by personnel. What is the difference between fixed gas detectors and portable gas detectors?
Fixed gas detectors are commonly used in industrial equipment and production processes. Due to the fact that fixed gas detectors can be installed at specific detection points to detect specific gas leaks.
The detection head composed of sensors and transmitters is installed on the detection site, and the secondary instrument composed of circuits, power supply, and alarm devices is installed in a safe place for monitoring by personnel.
Only in terms of process and technology, the detection principle is the same as that of ordinary detectors, but in terms of process and technology, it is more suitable for the continuity, long-term, stability and other characteristics required for fixed detection. The use of fixed gas detectors should also be selected based on the type and concentration of gas on site, and attention should be paid to installing fixed gas detectors in locations where specific gases may leak. For example, the effective height for sensor installation should be selected based on the weight of a specific gas.
Due to its convenient operation, small size, and ability to be carried to different production locations, the portable gas detector has a long working time. If the electrochemical detector is powered by an alkaline battery, it can be used continuously for 1000 hours; The new LEL detector, PID, and composite instrument use rechargeable batteries and can operate continuously for nearly 12 hours. Therefore, portable gas detectors are increasingly being used in various factories and health departments.
If a portable gas detector is used as a safety alarm in an open environment, such as an open workshop, it can continuously, real-time, and accurately display the concentration of toxic and harmful gases on site. Therefore, a portable gas detector can be used.
