1. The specific properties of the gas to be tested are flammable gas or toxic gas. Flammable gas uses Catalytic Combustion gas sensor for alarm; toxic gas alarm with special electrochemical sensor; If it is carbon dioxide, an infrared sensor should be used to alarm.
2. Number of gas detectors: First, the number of gas alarms can be determined according to the leakage point. If there are multiple leak points, multiple gas detectors can be placed. Second, the quantity can be determined based on the area. Generally, the effective detection radius of Flammable gas detectors is 7.5m, and the effective detection radius of Toxic gas detectors is 1.5-2m, and finally purchased according to the installed quantity according to the regulations of the Safety Supervision Bureau.
3. Choose bus type and split wiring, fixedgas detectorThe gas detector needs to be connected to the gas alarm controller, the bus type means that a four-core cable is connected in parallel from the controller to connect all detectors, and the split type means that each detector to the controller needs to be connected with a three-core cable.
In general,gas detectorJust a palm-sized explosion-proof instrument with a sensor part. This is an ordinary onegas detector。 Can the detector realize on-site display and sound and light alarm? The answer is yes. By adding an on-site display, the on-site detection concentration can be displayed. By adding an acoustic and visual alarm, the sound and light alarm after the on-site concentration exceeds the standard can be realized, that is, the function of the controller can be realized.
Gas sensors are used to determine the composition and content of gases in the environment. After making these judgments, it is basically possible to judge whether the gas is toxic and whether the gas limit has been reached. It was basically realizedgas detectorfunction.