A Zone 0 approved personal 4-gas monitor detecting the four most common oilfield hazards — CO, H₂S, flammable gas, and oxygen depletion — with 35+ hour battery life, MPS™ sensor technology, and glove-friendly single-button operation.
The Crowcon T4x is a Zone 0 approved personal 4-gas monitor built for workers who need reliable, straightforward protection against the four gas hazards most commonly encountered in the Alberta oilfield: carbon monoxide, hydrogen sulphide, flammable gases, and oxygen depletion. Available in 2, 3, and 4-gas configurations, the T4x offers three sensor technology options to match your specific operation — including the MPS™ sensor, which carries zero risk of device poisoning and can identify over 15 different flammable gases in a single unit. With a 35+ hour rechargeable battery life — double the original T4 — workers can complete multiple or extended shifts between charges without interruption. The large single button and intuitive menu make the T4x operable with gloves on and require minimal training. A front-mounted 180° flip display ensures easy reading in any wearing position, and the integrated rubber boot and 4m drop test rating mean it's built to survive the job site. Fully compatible with Crowcon Connect and the I-Test automated bump test station for complete fleet compliance management.
Key Features & Benefits
- Zone 0 / ATEX Zone 0 approved — suitable for the most hazardous classified areas
- Detects the 4 most common gas hazards: CO, H₂S, flammable gas, O2 depletion
- MPS™ sensor technology — zero poisoning risk; identifies 15+ flammable gases in one device
- Long-Life O2 (LLO2) sensor option — reduced replacement frequency and maintenance costs
- 35+ hour battery life — double the original T4; covers multiple or extended shifts
- Large single button with intuitive menu — glove-friendly, minimal training required
- Front-mounted backlit display with 180° flip — readable in any wearing position
- Integrated rubber boot as standard — durable by design, 4m drop tested
- IP65 and IP67 independently tested — water and dust resistant
- CSA/UL Class I, Division 1 certified (Groups A, B, C, D) — Alberta oilfield ready
- Crowcon Connect compatible — cloud-based fleet monitoring and compliance reporting
- I-Test station compatible — automated bump testing and calibration certificate management
- Available in 2, 3, and 4-gas configurations — right-sized for the application
- Data logging: 130 hours at 10-second intervals; 3,500 event records
Technical Specifications
| Size | 135 x 80 x 35mm |
| Weight | 282g |
| Display | Front-mounted backlit LCD, 180° flip |
| Alarms | 95dB audible, integrated vibrating, bright red/blue LEDs |
| Data Logging | 130 hours at 10-second intervals; 3,500 events |
| Battery | Rechargeable Li-ion; up to 35 hours (MPS™); 5.5-hour recharge |
| Operating Temperature | -20°C to +55°C |
| Humidity | 10–95% RH @ 40°C non-condensing |
| Ingress Protection | IP65 and IP67; 4m drop tested onto concrete |
| Crowcon Connect Compatible | Yes |
Safety and Compliance Certifications
| ATEX/UKCA | II 1G Ex ia IIC T4 Ga — Zone 0 |
| IECEx | Ex ia IIC T4 Ga |
| UL USA and cUL | Class I, Division 1, Groups A, B, C, D (intrinsic safety) |
| EMC Directive | 2014/30/EU |
35+ hour battery life reduces charging frequency and associated downtime versus standard 4-gas monitors. MPS™ sensor technology eliminates poisoning-related sensor failures and replacement costs while covering 15+ flammable gases without swapping sensors. Long-Life O2 sensor option reduces sensor replacement intervals and maintenance costs. 2/3/4-gas configurability means one platform serves multiple job roles without purchasing separate product lines.
For further information on our comprehensive range of products and services please get in touch with us by visiting our contact page.