How do I choose a fixed gas detector?
How to choose the right fixed gas detector is very necessary for those who are engaged in the safety inspection? There are different combustible, toxic, hazardous and organic gases in different production sites. So it is very important to choose the right fixed gas detector. Schenbe technology department will do some specifics on the introduction, can be your reference.
1, if methane and other less toxic alkanes are predominant, the choice of LEL detector is undoubtedly * for the right. The gas detection principle is catalytic combustion, which is a very common detection principle. The calibration of the instrument is also very convenient. Because this technology is more mature, domestic gas detector can also meet the user's requirements.
The following are the domestic and imported fixed gas detector domestic recommended by users: JL268D, JL269 leak detector, ADY-1, HL-200 series of user response is also relatively good. Imported recommended: U.S. Warwick FGM and SP series of fixed gas detector; Canada BW MC-W gas alarm; Honeywell Honeywell ImpulseX1 detector; COMCOS new universe XP-3110 detector, XP-3160 pump suction alarm, XP-3140 leak detector; RAE Warwick miniEX Portable gas detector; OLDHAM OLDHAM EX2000 detector; Drager PAC EX2, X-am 2000 gas alarm. If there are some toxic gases such as carbon monoxide, hydrogen sulphide, ammonia, oxygen, hydrogen, phosphine and other gases, it is necessary to give preference to a portable single toxic gas detector or portable multi-gas detector in order to ensure the safety of workers. Toxic gas detectors use electrochemical principles for detection. Electrochemical gas detectors usually measure concentrations in ppm. Note: the detection of these gases, in addition to carbon monoxide, oxygen can be considered outside the domestic other gases recommended the best use of imported instruments, imported recommended: BW single gas alarm GAXT series; Honeywell ImpulseXP single detector; Ensco T40 detector; Oldham TX2000 single detector; Dräger Pac 5000,pac7000,pac Ⅲ single toxic gas alarm. , If more organic toxic and hazardous gases, taking into account the lower concentration of its possible personnel poisoning, such as aromatic hydrocarbons, halogenated hydrocarbons, ammonia (amine), ethers, alcohols, lipids, etc., you should choose the photoionisation detector, and do not use the LEL detector to cope with the situation, which may lead to casualties. Imported recommended: the U.S. Huarui PGM-7360 benzene detector, PGM-30 detector, PGM-7320 TVOC detector, PGM-7340 VOC detector, Canada BW M5 detector as well as the British ionisation organics detector.
If the gas type covers the above categories of gases, choose a composite gas detector, which requires that the gas composition of the measured space be provided so that the sensor instrument can be better configured.
