T4x

The T4x is a portable multi gas monitor providing enhanced personal protection whenever you need. Available with added industry leading sensor technologies (MPS™ and long-life O₂) to improve worker safety, remove the risk of device poisoning, and cost you less over time.

Where to Buy

T4x is Crowcon’s Zone 0 approved personal protection solution for detecting the four most common gas hazards: carbon monoxide, hydrogen sulphide, flammable gases and oxygen depletion, offering you compliance and low cost of ownership in a one simple-to-use solution.

The T4x has three sensor technology options for you to select according to your needs: Dual Toxic sensor for CO and H₂S, Long-Life Oxygen (LLO₂), and the MPS™ sensor, which has zero risk of device poisoning and can accurately identify over 15 different flammable gases in one device.

The large single button and intuitive menu system allows T4x to be operated wearing gloves with minimal training, and it is durable by design and includes an integrated rubber boot as standard, with all the durability you can expect from the T4 range. Plus, its 35+ hour battery life (double the battery life of our original T4) allows multiple or longer shifts to be worked between recharging, allowing for uninterrupted working in the most demanding environments.

MPS™ & LLO₂ sensor options

Zero risk of device poisoning with MPS™

35+ hour battery life

Capable of detecting 15+ flammable gases

Compact & durable

MPS™ (Molecular Property Spectrometer) Technology

No calibration or scheduled maintenance is needed, reducing interruptions and increasing uptime
Sensor self-monitors every 2 seconds, automatically reporting any problems with its operation
‘True LEL’™ multi-gas accuracy means it can accurately detect multiple gases at once and instantly identify gas type
No sensor ‘poisoning’ from environmental toxins or contaminants, providing uncompromised performance
Hydrogen ready sensor

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 Up to 18 hour typical runtime (Standard sensor option)Up to 35 hours runtime (MPS and LLO2 options) 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 1 G Ex ia IIC T4 Ga -20°C ≤ Ta ≤ +55°C (T4 Type 1) IECEx Ex ia IIC T4 Ga -20°C ≤ Ta ≤ +55°C (T4 Type 1) UL and cUL: Use in hazardous locations Class 1 Div 1 groups A,B,C,D only as to intrinsic safety MED Directive 2014/90/EU (Pending)
Interface	USB communications lead
Accessories	Included with T4: Integrated alligator clip and tethering loop Bump/Calibration plate Available separately: Single unit cradle charger, 10 unit cradle charger; Vehicle charger Clip on filter plate for sensor protection in dusty environments I-Test automated bump and calibration station
Crowcon Connect Compatible?	Yes

* Toxic and oxygen sensors are not rated for continuous operation above 50°C (122°F)

Gas	Range	Resolution
Long-Life Oxygen (O₂)	0-30% Vol.	0.1% Vol.
Flammable (MPS)	0-100% LEL	1% LEL
Hydrogen sulfide (H₂S)	0-100ppm	1ppm
Carbon monoxide (CO)	0-1000ppm	1ppm