The Tetra:3 multigas monitor is a compact, robust and easy-to-use diffusion based detector. Single button operation, small size and clear top-mounted display make it a favourite in the market amongst those working in demanding industrial environments, such as those in the water, telecoms, food, brewing or hydrocarbons sectors.

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Quick Overview

Overview

Gases include the most common four (carbon monoxide, methane, oxygen and hydrogen sulphide), but also an expanded range: ammonia, ozone, sulphur dioxide, H₂ filtered CO (for steel plants) and IR carbon dioxide (for safe area use only).

Robust

Rugged and impact-resistant design provides extra shock and vibration protection - provides protection in the harshest environment
Water and dust resistant to IP65 and IP67
Can be submerged in water

Effective warning

95dB audible alarm - ensures prompt evacuation from hazard zone
Vivid red/blue visual alarm
Vibrating alarm

Reliable

Proven sensor technology and software operation - covers you over an extended shift
Clear "calibration due" warning
Lithium-ion battery provides over 14 hours continuous operation from a single charge with no memory effects

User friendly

Single button operation for all functions - can be operated with gloved hands
Top mounted, backlit display of all gas readings, diagnostics and battery life - 'at a glance' operating status

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Details

Size	114 x 71 x 48mm (tapers to 20mm) (4.5 x 2.8 x 1.9ins)
Weight	295g (10.4oz)
Alarms	95dB multiple alarm sounds allow selection of distinctive tones for different alarm levels 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 (>12,000 data logs of 4 channels) Threshold: Starts after adjustable pre-set level Event: >5,000 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: A 5-hour charge from flat provides at least 12 hours of continuous use.A 12-hour charge provides at least 14 hours of continuous use
Sampling	Diffusion or hand aspirator
Operating temperature	-20°C to +55°C (-4°F to +131°F)
Storage	-25°C to +65°C (-13°F to +149°F)
Humidity	20 to 90% RH@ 40°C non-condensing
Ingress protection	IP65 and IP67
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	EN60079-0, EN60079-11, EN60079-1 CSA22.2, 152 EN50270, EN50271, EN50104, EN45544, EN60079, IEC61508
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