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T4 Personal Multigas Monitor

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General Details

Portable multigas detector provides effective protection against 4 common gas hazards

T4 is Crowcon’s personal protection solution for detecting the four most common gas hazards:

  • carbon monoxide
  • hydrogen sulphide
  • flammable gases 
  • oxygen depletion

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, well protected from water ingress through IP65 and IP67 certification and ATEX Zone 0 approved, T4 allows uninterrupted working in the most demanding environments.

T4 contains a wide range of powerful features to make everyday use easier and safer:

24 hour battery

With a battery life of 24 hours, T4 allows multiple or longer shifts to be worked between recharging.

Features

Specification
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
24 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 IECEx: Ex ia IIC T4 Ga Tamb -20°C to +55°C
ATEX: Ex II 1 G Ex ia IIC T4 Ga Tamb -20°C to +55°C
UL: Use in hazardous locations Class 1 Div 1, groups A, B, C and D only as to intrinsic safety
INMETRO: Ex ia IIC T4 Ga Tamb -20°C to +55°C
Compliance EMC Directive 2004/108/EC
Interface USB communications lead
Accessories Available separately:
Single unit cradle charger, 10 unit cradle charger, vehicle charger
Clip on filter plate for sensor protection in dusty environements
I-Test automated bump and calibration station

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

Gases and Ranges

Gas Range Resolution
Carbon monoxide (CO)  0-1000ppm  1ppm
Flammable  0-100% LEL  1% LEL
Hydrogen sulphide (H2S)  0-100ppm  1ppm
Oxygen (O2)  0-30% vol.  0.1% vol.
Product Video

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.

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When most portable detectors are turned off, the algorithm that assesses TWA exposure assumes that it’s the end of the shift. When turned on again, these detectors act as if it is a new work shift, ignoring all previous measurements. The TWA Resume function however, provides the option to include previous measurements from within the correct time frame.
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Basic Operations

  1. Activation

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  2. Home Screen

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  3. Shutdown

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  4. Charging

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  5. Backlight

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Advanced Features

  1. Quick view

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  2. Information screen

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  3. S TEL

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  4. TWA

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  5. Peak mode

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  6. Manual zeroing

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Bump Testing

  1. Manual bump

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  2. I-test bump

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