Crowcon T4

Description

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

Now with improved detection of pentane, hexane and other long chain hydrocarbons.

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

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.

 

TWA Resume

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.

18 hour battery

With a battery life of 18 hours, T4 allows multiple or longer shifts to be worked between recharging.

Positive Safety

Crowcon’s visual ‘traffic light’ indication, provides constant visual assurance that T4 is operating soundly and conforms to site bump test & calibration policy. The bright green and red Positive Safety LEDs are visible to all and offer a quick, simple and comprehensive indication of monitor status to both the user and others around them.

Specifications

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	IECEx: Ex db ia IIC T4 Gb Tamb -20°C to +55°C ATEX: Ex II 2 G Ex db ia IIC T4 Gb 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 db ia IIC T4 Gb Tamb -20°C to +55°C
Standards	EMC Directive 2014/30/EU
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 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)

Gases & 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.