The Crowcon Tetra is a 1-4 gas, single button operated, personal monitor with top mount display and optional pump. Tetra is a robust and reliable monitor designed to withstand the harshest of industrial environments featuring data and event logging as standard; and audible, visual and integral vibrating alarms built into a simple to use, shockproof monitor.
Tetra is a single button, reliable and robust multigas monitor with optional internal pump. Featuring intelligent sensor modules, shockproof construction, top mount display and self checking software, Tetra is simple to use and assures reliable gas detection in the toughest of environments. Available as rechargeable Li-ion, or non-rechargeable alkaline versions with or without built in electric sample pump. Operating time 12+ hours for rechargeable units, 11 hours for alkaline version. Certified ATEX/IECEx II 2G Ex ia d IIC Gb, CSA or UL to Class 1 Division 1 Groups A,B,C,D for US and Canada. T4 for rechargeable and T3 for alkaline batteries, supplied as standard with belt clip.
Available Sensors for Bespoke Configurations are:
+ 0-100% LEL methane
+ 0-100% LEL propane
+ 0-100% LEL pentane
+ 0-100% LEL butane
+ 0-100% LEL ethylene
+ 0-100% LEL hydrogen
+ 0-100% LEL flammable (unfiltered) use for alcohols, ketones and general solvents
+ 0-100% LEL methane (Australian configuration)
+ 0-100% LEL pentane (Australian configuration)
+ 0-25% vol. oxygen
+ 0-100ppm hydrogen sulphide
+ 0-500ppm hydrogen sulphide
+ 0-500ppm carbon monoxide
+ 0-1500ppm carbon monoxide
+ 0-20ppm chlorine* (UK alarms)
+ 0-20ppm chlorine*
+ 0-100ppm ammonia
+ 0-1000ppm ammonia
+ 0-20ppm sulphur dioxide
+ 0-1ppm ozone* (not for pumped units, includes specific flow plate)
+ 0-10ppm nitrogen dioxide*
+ 0-20ppm nitrogen dioxide*
+ 0-2000ppm hydrogen
+ 0-25ppm hydrogen cyanide
+ 0-5ppm phosphine - UK alarms
+ 0-5ppm phosphine
+ 0-10ppm hydrogen fluoride*