Description:
Crowcon Tetra Tetra The series of personal gas detectors is an ideal choice for users working in hazardous or enclosed environments that may be exposed to a range of toxic and flammable gases. Available in 2, 3, or 4 gas versions (flammable gas FL, oxygen O2, hydrogen sulfide H2S, and carbon monoxide CO), easy-to-use single button operation with clear screen operation guidance. Durable - Made of tough plastic, with flexible internal components to resist impact and vibration, and an integral cast rubber layer for additional protection. Easy to read backlit graphic display indicates operating status at a glance. Fully interchangeable intelligent sensor module with 90dBA audio alarm, bright red/blue visual alarm, internal vibration alarm, 2-level instantaneous alarm, 8-hour and 15 minute average time weighted average alarm peak level memory. LiON rechargeable battery supports full 12 hour operation, 30 day countdown warning for calibration expiration date, IP65 waterproof and dustproof for RS-232 Infrared link size | 122 x 128 x 57 mm, weight 498 g | ----------- | * * Gas * * | * * Range * * | * * Alarm * * Flammable gas | 0-100% LEL | 20% LEL oxygen | 0-25% | 19/23.5% hydrogen sulfide | 0-50ppm | 5ppm carbon monoxide | 0-500ppm | 30ppm response time (typical value) | Flammable gas 20 seconds, toxic gas 20 seconds, oxygen 10 seconds | Audio alarm | 90dBA @ 30cm | Visual alarm | Red/blue dual color flashing LED pair in gas | Vibration alarm | Internal vibration alarm | Display | 128 x 64 backlit graphic LCD, displaying all gas channels simultaneously. Graphic symbols for battery (with proportional indication of remaining operating time), pump operation, normal operation, or fault warning. |When calibration expires within 30 days, calibration expires, or service is required, there will be an indication upon startup. Display mode: normal display of continuous real-time gas, data recording, event recording, sampling, manual inhaler or internal electric sampling pump, operating temperature range: -20 to 55 ° C, relative
