Crowcon T3 4-Gas Detector

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.

Gas	Range	Typical Alarms
Flammable	0-100% LEL	20%
Oxygen	0-25%	19/23.5%
Hydrogen sulphide (H₂S)	0-100ppm	5ppm
Carbon monoxide (CO)	1-500ppm	30ppm
Sulpher dioxide (SO₂)	0-20ppm	1ppm
Ozone (O₃)	0-1ppm	0.1ppm
Ammonia (NH₃)	0-100ppm	25ppm
*Carbon dioxide (CO₂)	0-5%	0.5ppm

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