Crowcon T3 Multi Gas Detector
Crowcon T3 Multi Gas Detector Crowcon T3 Multi Gas Detector

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Price From: £575.00 exc VAT £575.00 inc VAT £690.00

Price as configured: exc VAT £0.00 inc VAT £0.00

The Crowcon Tetra 3 multi gas detector comes in various configurations with sensors for LEL, O2, CO and H2S.  Other sensors are available.  Please note: the charger must be purchased separately.

Price as configured: exc VAT £0.00 inc VAT £0.00

Availability: In stock

Description / Features / Spec


Crowcon T3 Multi Gas Detector

The Crowcon Tetra 3 is a multi gas detector and can detect a combination of 2, 3 or 4 gases.  The O2 sensor includes a 3-year warranty.  Configurations also include an LEL sensor, hydrogen sulphide (H2S) and carbon monoxide (CO) sensor.  Other sensors are available to allow the Tetra 3 to adapt to other industries. 

The Tetra 3 multi gas detector is effective in harsh environments thanks to its rugged design and IP65/67 rated casing.  This makes it water and dust resistant and allows it be briefly submerged in water.  The T3 can be securely attached to clothing using the integral alligator clip.

Crowcon have ensured the gas T3 is also reliable and have included a triple alarm system to alert the wearer to the presence of gas.  This includes a 95dB alarm, a bright blue/red visual alarm and an internal vibrating alarm.


Range /   Typical Alarm (UK)


0- 100% LEL    /  20%

Oxygen (O2)

0-25% / 19/23.5%

Hydrogen sulphide (H2S)

0-100ppm  /   5ppm

Carbon monoxide (CO)

0-500ppm / 30 ppm

Key Features

  • Casing provides shock and vibration protection
  • Proven sensor technology
  • Alerts user to calibration check due
  • Extended usage thanks to lithium-ion battery
  • One-button operation allows unit to be used with gloves
  • Backlit display shows gas readings, diagnostics and battery life
  • Can be used with the T3 Gas Tester (purchased separately)
  • Operational and fault warning provided
  • Datalogging available
  • Can be calibrated using Portables PC



114 x   71 x 48mm (tapers to 20mm) (4.5 x 2.8 x 1.9ins)


295g   (10.4oz)


Audible   - 95dB multiple alarm sounds allow selection of distinctive tones for different alarm levels
Vibrating   - Internal vibrating alarm

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


Rechargeable i-on 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


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


15-95%   RH non-condensing
(Toxic and oxygen sensors RH specifications vary)


Europe   - ATEX II 2 G Ex ia d IIC T4 Gb (-20°C ≤ Ta ≤ +55°C)
International - 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
Operating   standards - EN50270, EN50271, EN50104, EN45544, EN60079, IEC61508

PC interface

RS232 connection from interface module in charger
RS232/USB   converter available


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International Delivery Options

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