Gas Detection: Crowcon Tetra
The Tetra range of multi-gas personal detectors is ideal for users working in hazardous or confined environments with potential exposure to a range of toxic and flammable gases.
2, 3 or 4 gas versions available (Flammable FL, Oxygen O
2
, Hydrogen Sulphide H
2
S and Carbon Monoxide CO)
Easy to use single button operation with clear display guidance through operation
Robust – tough plastic construction with flexible internal assembly to resist shock and vibration, plus an overmoulded rubber layer for additional protection
Easy to read backlit graphic display
Indications of operating status can be viewed at a glance
Fully interchangeable intelligent sensor modules
90dBA audible alarm
Bright red/blue visual alarm
Internal vibrating alarm
2 levels of instantaneous alarm
Time weighted average alarm for 8 hours and 15 minutes averages
Peak level recall
LiON rechargable battery gives full 12 hours operation
30 day countdown warning for calibration due date
Water and dust resistant to IP65
IR link for RS-232
Dimensions
122 x 128 x 57mm Wt.498g
Gas
Range
Alarm
Flammable
0-100% LEL
20% LEL
Oxygen
0-25%
19//23.5%
Hydrogen Sulphide
0-50ppm
5ppm
Carbon Monoxide
0-500ppm
30ppm
Typ. response times
Flammable 20s, Toxic Gas 20's, Oxygen 10s
Audible alarms
90dBA @ 30cm
Visual alarms
Dual Colour red/blue flashing LED pair in gas
Vibrating alarm
Internal vibrating alarm
Display
128 x 64 graphic LCD with backlight, giving simultaneous display for all gas channels. Graphic symbols for battery (with proportional indication of remaining operation time), pump operation, healthy operation or fault warning.
Start up indication when calibration is due within 30 days, calibration overdue or service is required
Display mode
Normal display for continuous real time gas
Datalogging
Event logging
Sampling
Hand aspirator or internal electric sampling pump
Op. temp. range
-20° to 55°C, 0-99% RH
European safety std...
