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Crowcon Tetra 3 Multigas Personal Monitor with Charger

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Crowcon Tetra 3 Multigas Personal Monitor with Charger
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Crowcon Tetra 3 Multigas Personal Monitor with Charger

Crowcon Tetra 3 Multigas Personal Monitor with Charger

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Tetra 3 Multigas Personal Monitor with Charger by Crowcon

The Tetra:3 multi-gas 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.

Despite its compact size the Tetra:3 is ultra-rugged and water proof.

  • Up to 4 gases in a small and lightweight design
  • Infra-red carbon dixoide sensor version for safe area use (ie non-explosion risk areas)
  • Single button operation for all functions, can be operated with gloved hands
  • Rugged impact resistant design provides extra shock and vibration protection
  • Reliable Lithium-ion battery provides over 16 hours continuous operation from a single charge with no memory effects.
  • Water and Dust resistant to IP67, can be submerged in water
  • Rapid and effective warning with a 95 dBa audible alarm, an extremely bright red/blue visual alarm and vibrating alarm as standard.
  • Top mounted, backlit display of all gas readings, diagnostics and battery life.

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).

Tetra 3 Specifications:
295g (10.4oz)
114 x 71 x 48mm (tapers to 20mm) 4.5 x 2.8 x 1.9 inches
Audible Alarms 95dB
Multiple alarm sounds allow selection of distinctive tones for different alarm levels
Visible Alarms Dual color red/blue flashing LED in gas hazard
Vibrating Alarm 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
Display Mode Normal display for real time gas concentration levels. Display recall for Peak readings and TWA
Datalogging (optional) Timed datalogging: 50 hours at 1-minute data rate (>12000 data logs of 4 channels)
Threshold logging: (starts after adjustable preset level)
Event logging: >5000 events
Battery Rechargable Li-ion battery
Operating Time Based on four gas unit with flammable sensor >16 hours
Sampling Diffusion or hand aspirator
Operating Temp. Range -20°C to +55°C (-4°F to +131°F)
Toxic and Oxygen sensors are not rated for continuous operation at high temperatures. Consult Crowcon if operating temperatures are likely to exceed 40°C (104°F) for extended periods
Humidity 20-90% RH @ 40°C non-condensing
Ingress Protection IP65 and IP67
Approval Codes Europe: 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
North America: CSA Class I Division 1 Groups A, B, C and D
Safety Standards Europe:EN60079-0, EN60079-11, EN60079-1, 94/9/EC
North America: CSA22.2, 152
Operation Standards: EN50270, EN50271, EN50104, EN45544, EN60079, IEC61508
PC Interface RS232 connection from interface module in charger
RS232/USB converter available
Calibration Tetra 3 can be routinely calibrated using Portables PC software or Crowcon Checkbox IMH
Accessories Tetra 3 is supplied with an integral alligator clip
Optional Accessories Universal harness plate, shoulder strap, chest harness, aspirator assembly (flow plate, bulb and 2m/6ft tubing), fixed and telescopic sample probes, and an in-line water trap

Gases and Ranges:
Typical Alarm (US)
0-100% LEL

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