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Crowcon Tetra 3 Multigas Monitor, 0-1ppm Ozone, Australian Alarms & English Manual, ATEX - T3-AP-A-013-Z

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Crowcon Tetra 3 Multigas Monitor, 0-1ppm Ozone, Australian Alarms & English Manual, ATEX - T3-AP-A-013-Z

Crowcon Tetra 3 Multigas Monitor, 0-1ppm Ozone, Australian Alarms & English Manual, ATEX - T3-AP-A-013-Z


T3-AP-A-013-Z Tetra 3 Multigas Monitor, 0-1ppm Ozone, Australian Alarms & English Manual, ATEX by Crowcon

Designed with the user in mind, the top mount display, full function data and event logs, audible, visual and vibrating alarms deliver top end performance in a small and lightweight package. Gases include the most common four (carbon monoxide, methane, oxygen and hydrogen sulphide), also an expanded range: ammonia, ozone, sulphur dioxide, hydrogen filtered carbon monoxide (for steel plants) hydrogen cyanide, other flammable gases and IR carbon dioxide (for safe area use only).


  • Rugged impact resistant design provides extra shock and vibration protection - Provides protection in the harshest environments
  • Water and Dust resistant to IP65 and IP67
  • Can be submerged in water

Effective warning

  • 95 dB audible alarm - ensures clear warning facilitating prompt evacuations from hazard zones
  • Vivid red/blue visual alarm
  • Vibrating alarm


  • Proven sensor technology and software operation - Provides reliability you can trust and has the power to cover you for 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
Tetra 3 Specifications:
Size 114 x 71 x 48mm (tapers to 20mm) (4.5 x 2.8 x 1.9ins)
Weight 295g (10.4oz)
Alarms Audible: 95dB multiple alarm sounds allow selection of distinctive tones for different alarm levels
Vibrating: Internal vibrating alarm
Display Main 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: Real time gas concentration levels
Display recall: Peak readings and TWA
Data logging Timed datalogging: 50 hours at 1-min data rate (>12,000 data logs of 4 channels)
Threshold logging: Starts after adjustable pre-set level
Event logging: >5,000 events
Battery Rechargable 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-hr charge provides 14 hours of continuous use
Sampling Diffusion or hand aspirator
Operating Temp. Range -20°C to +55°C (-4°F to +131°F)
Humidity 15-95% RH non-condensing
Ingress Protection IP65 and IP67
Certification Europe: ATEX II 2G Ex db ia IIC T4 Gb (-20°C ≤ Ta ≤ +55°C) Baseefa05ATEX0187
International: IECEx Ex db ia 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, 2014/34/EU
North America: CSA22.2
Operating Standards: 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
Accessories 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
Charging options Single way drop-in charger with multi-region power supply (UK, USA, EU & Australian plug adaptors included) or inline 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 with status indication for vehicle, wall or desk mounting; can be used with multi region power supply or vehicle charging lead.

Gases and Ranges:
Typical Alarm (US)
0-100% LEL
Oxygen (O2)
Hydrogen Sulphide ( H2S)
Carbon Monoxide ( CO)
Sulphur dioxide ( SO2)
Ozone ( O3)
Ammonia ( NH2)
Carbon dioxide ( CO2)
Carbon monoxide (CO) H2 compensated
Hydrogen Cyanide (HCN)

Questions & Answers