Crowcon’s Tetra 4 is an extremely robust handheld gas detector offering advanced protection for those working in harsh environments. This portable multi-gas detector is particularly easy to use and maintain. The T4 protects against the four most common gas hazards: carbon monoxide (CO), hydrogen sulfide (H2S), combustible gases and oxygen deficiency (O2).
The T4 includes numerous functions and features that make everyday use easier and safer:
TWA resume function
Only the T4 offers this function. It calculates the total exposure to toxic gases over a full shift, even if the device is switched off in the meantime, e.g. for a break or when driving to another location.
The red dashed line in the graph shows workers using other gas detection devices and turning them off during their lunch break. This puts them at risk of overexposure to hydrogen sulfide (H2S).
24 hour battery life
Work safely during multiple or longer shifts between charges, made possible by exceptional 24-hour battery life.
The T4 features a thick anti-shock rubber body and has been drop-tested from 4 meters onto concrete. It therefore offers reliable operation even in the most demanding applications. Water and dust resistance according to IP65 & IP67. The T4 is thus the most robust portable handheld gas meter.
Large, easy-to-read display with backlight. Can be rotated 180° for better visibility while working.
Approved for ATEX Zone 0 and UL Class 1 Div 1 for operation in a wide range of environments.
One sensor per gas type ensures effective, safe and reliable detection.
Multiple alarm signals
Acoustic alarm signal at 95dB, bright LEDs in red/blue and vibration signals offer an effective warning concept for gas hazards.
Large single button and an intuitive menu system reduce training requirements and allow easy operation even while wearing gloves.
|Measurable gases||Measuring range|
|Flammable gases||0-100 % LEL|
|Oxygen (O2)||0-30 V%|
|Hydrogen Sulfide (H2S)||0-100 ppm|
|Carbon Monoxide (CO)||0-1,000 ppm|