Tetra is a flexible multigas monitor for the detection of flammable gases, oxygen and a wide range of toxic gases. Available in rechargeable or disposable battery format and with or without an internal pump, it is used extensively in the utilities, chemicals and hydrocarbon processing markets.

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Quick Overview

Overview

Intrinsically safe, Tetra is one of the only portable gas detectors with embedded software designed to the exacting requirements of IEC 61508-3, guaranteeing reliable and dependable operation.

Features include:

Up to four gases measured
Infra-red carbon dioxide sensor version for safe area use (ie non-explosion risk areas)
Digital interchangeable i-module sensors for full flexibility
Loud 94dBA audible alarm with selectable tones
Unique dual colour red/blue visual alarm
Built in vibrating alarm as standard
Rugged and robust, IP65 ingress protection
Simultaneous 4 gas display with automatic backlight
Peak mode operation
TWA reading recall
Data & event logging
Simple IR interface to PC

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Details

Size	Rechargeable 122 x 128 x 57mm (4.75 x 5 x 2.25 ins) Non-rechargeable 134 x 128 x 57mm (5.25 x 5 x 2.25 ins)
Weight	498g (1.1lb)
Alarms	94dB Multiple alarm sounds allow selection of distinctive tones for different alarm levels Dual colour red/blue flashing LED in gas hazard Internal vibrating alarm
Display	Graphic LCD with backlight, giving simultaneous display for all gas channels. Graphic symbols for battery (with proportional indication of remaining operation time), healthy operation or fault warning. Start up indication when calibration is due, overdue, or service required. Normal display: Real time gas concentration levels Display recall: Peak readings and TWA
Data logging	Timed: 50 hours at 1-minute data rate (>3,000 data logs of 4 channels) Threshold: Starts after adjustable pre-set level Event: >1,500 events
Event logging	Alarm, over range, calibration, bump, on/off, TWA, 1000 events
Battery	Rechargeable Li-ion battery
Operating time	Based on four-gas instrument fitted with flammable sensor: 5 hr charge from flat provides at least 12 hr of continuous use. 12 hr charge provides at least 14 hours of continuous use
Sampling	Diffusion, hand aspirator or internal electric pump
Operating temperature	-20°C to +55°C (-4°F to +131°F)
Humidity	20 to 90% RH
Ingress protection	IP65
Approvals	ATEX II 2 G Ex ia d IIC T4 Gb (-20°C = Ta = +55°C) BASEEFA05ATEX0187 IECEx Ex ia d IIC T4 Gb (-20°C = Ta = +55°C) BAS05.0059 CSA Class I Division 1 Groups A, B, C and D
Safety standards	Europe EN60079-0, EN60079-11, EN60079-1 North America CSA22.2, 152 Operation Standards EN50270
PC Interface	RS232 connection from interface module in charger RS232/USB converter available
Calibration	Can be routinely calibrated using Portables PC software or Crowcon Checkbox IMH
Charging	Single way drop-in charger with UK, EU or US plug or in-line 110V/220V supply Single way drop-in charger with options as above including PC interface 5 way multi-charger with universal power supply Vehicle adapter for in-vehicle charging Universal charger for vehicle, wall and desk mounting with a multi-region plug (supplied with EU/UK/US/Australian inserts) and status indication
Accessories	Pumped units are supplied with a sampling kit (flowplate and 2m tubing) Universal harness plate; shoulder strap; chest harness; carry case; fixed and telescopic sample probes and in-line water trap

Additional Information

Manufacturer: Crowcon

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