The T4 provides portable detection for the four most common gas hazards in one, simple to operate, durable device, to ensure compliance across a variety of sectors and environments.
Whether it’s detecting the presence and levels of carbon monoxide, hydrogen sulphide and other flammable gases, or monitoring oxygen depletion, the T4 is the simple, portable solution with an 18+ hour battery life.
Offering you compliance, robustness and low cost of ownership in a simple to use solution, the large single button and intuitive menu system allows T4 to be operated wearing gloves with minimal training.
Crowcon’s toughest portable yet, T4 is durable by design and includes an integrated rubber boot as standard. An optional clip-on filter cover, which is easily removed and replaced, ensures sensors are protected in the dirtiest environments. Drop tested to 4m and well protected from water ingress through IP65 and IP67 certification, T4 allows uninterrupted working in the most demanding environments.
Unique to T4, the TWA Resume function ensures toxic gas exposure is calculated accurately over an entire shift, even if T4 is switched off for a break or during travel to another site, so you’re always getting the most accurate readings possible.
- 18+ hours battery life
- Highly durable
- Intuitive device
- Low cost of ownership
- TWA Resume
| Size | W135 x H80 x D35 mm (5.3 x 3.1 x 1.4in) |
| Weight | 282g (9.9oz) |
| Durability | Drop tested to 4m onto concrete |
| Alarms | Audible >95dB Bright red/blue visual LEDs Integrated vibrating alert |
| Display | Front mounted, backlit. Optional 180° flip for easy viewing whilst worn |
| Logging | 130 hours of data logging; Up to 3500 events |
| Battery | Rechargeable Li-ion 18 hour typical runtime 5.5 hour recharge |
| Operating temperature | -20°C to +55°C (-4°F to +131°F)* |
| Humidity | 10 to 95% RH @ 40°C non-condensing |
| Ingress protection | Independently tested to IP65 and IP67 |
| Approvals | ATEX and UKCA: II 2 G Ex db ia IIC T4 Gb Tamb -20°C to +55°C (T4 Type 2)
IECEx: Ex db ia IIC T4 Gb -20°C ≤ Ta ≤ +55°C (T4 Type 2) UL and cUL: Use in hazardous locations Class 1 Div 1 groups A,B,C,D only as to intrinsic safety INMETRO: Ex db ia IIC T4 Gb -20 °C ≤ Ta ≤ +55 °C MED Directive 2014/90/EU UKCA MED (MSN1874) |
| Standards | EMC Directive 2014/30/EU |
| Interface | USB communications lead |
| Accessories | Included with T4:
Integrated alligator clip and tethering loop Bump/Calibration plate Available separately: |
| Crowcon Connect Compatible? | Yes |
| Gas | Range | Resolution |
| Oxygen (O2) | 0-30% Vol. | 0.1% Vol. |
| Flammable | 0-100% LEL | 1% LEL |
| Hydrogen sulphide (H2S) | 0-100ppm | 1ppm |
| Carbon monoxide (CO) | 0-1000ppm | 1ppm |
JoomShopping Download & Support