The Model T4 portable multi-gas detector integrates a range of innovative safety features. Its intuitive yet rugged design provides advanced protection for personnel working in harsh environments. Designed for ease of operation and minimal maintenance, the T4 simultaneously monitors four common hazardous gases: carbon monoxide (CO), hydrogen sulfide (H₂S), combustible gases, and oxygen (O₂).
TWA Hold Function
The unique TWA Hold feature ensures continuous monitoring of toxic gas exposure levels, even after power cycling or when changing work environments during a shift.
18-Hour Battery Life
The T4 offers up to 18 hours of continuous operation on a single charge, providing sufficient power to cover multiple user shifts.
Backlit Display
Features a large, backlit screen that can be inverted 180° for clear and easy reading of data in any field condition.
Rugged & Durable Construction
Built with an integrated industrial rubber housing and rigorously tested for impact resistance. Its robust design ensures reliable performance in demanding environments.
IP65/IP67 Rating for Dust and Water Resistance
Provides comprehensive protection against dust and water ingress, even under harsh operating conditions.
Independent Sensors
Employs dedicated sensors for each target gas (CO, H₂S, Combustible, O₂), ensuring efficient, fast, and reliable detection.
Safety Status Indicator
A professional "Positive Verification" indicator provides a constant, clear visual confirmation (steady green light) that the detector is operational and functioning correctly. It also alerts the user or site supervisor with a red light when an alarm condition is active.
Intrinsic Safety Certification
The T4 is certified as intrinsically safe, meeting ATEX and UL standards for Class I Division 1 hazardous locations.
Multi-Stage Alarms
Configurable 95 dB audible alarm, red/blue LED visual alarm, and powerful built-in vibration alarm ensure alerts are noticed.
Simple Operation
One-button control and an intuitive menu system allow for easy operation, even while wearing work gloves.
| Specifications | 135 x 8 x 35mm (5.3 x 3.1 x 1.4in) | |
| Weight | 282g (9.9oz) | |
| Durability | 4-meter drop test | |
| Alarms | Audible Alarm | 95 decibels |
| Vibration Alarm | Built-in | |
| Visual Alarm | Red/blue dual-color LED flashing alarm | |
| Display | Backlit display, supports 18 ° inverted display | |
| Event Logging | Data Logging | Records once every 1 seconds, stores up to 13 hours |
| Time Logging | 3,5 | |
| Battery | Rechargeable Lithium Battery | 5.5-hour charge, continuous use for at least 18 hours |
| Operating Environment | Operating Temperature | -2 to +55°C (-4°F to +131°F)* |
| Ambient Humidity | 1 -95% RH @ 4 °C non-condensing | |
| Protection Class | IP65 and IP67 | |
| Safety Standard | EMC | Directive 2 14/3 /EU |
| Certifications | ATEX | Ex db ia IIC T4 Gb -2 °C ≤ Ta ≤ +55°C |
| IECEx | Ex d ia IIC T4 Gb Tamb -2 °C to +55°C | |
| UL | For intrinsic safety, usable in hazardous areas Class 1 Div 1 groups A,B,C,D A,B,C,D only as to intrinsic safety | |
| INMETRO | Ex db ia IIC T4 Gb -2 °C ≤ Ta ≤ +55°C | |
| MED | Directive 2 14/9 /EU | |
| Accessories | Standard Accessories | Pocket clip/lanyard loop/calibration cap |
| Optional Components | Single charging cradle; Multi-charger cradle; Dust-proof car chargerI-Test automatic bump test and calibration kit |
| Gas | Range | Resolution |
|---|---|---|
| Oxygen (O₂) | 0-30% vol. | 0.1% vol. |
| Combustible Gas | 0-100% LEL | 1% LEL |
| Hydrogen Sulfide (H₂S) | 0-100ppm | 1ppm |
| Carbon Monoxide (CO) | 0-1000ppm | 1ppm |
