Crowcon T4

The Crowcon T4 is a durable 4-gas detector featuring a unique “TWA Resume” function that ensures toxic gas exposure is tracked accurately across entire shifts. Robust and easy to operate, its integrated rubber boot and simple large-button design make it perfect for demanding UK utility and construction environments.

TWA Resume Function: Unique feature that ensures toxic gas exposure is calculated accurately over an entire shift, even if the unit is turned off during breaks.
Rugged and Durable: Features a thick anti-shock rubber casing, independently drop-tested to 4m onto concrete.
Positive Safety Indicator: A simple “traffic light” status LED (green for compliant, red for attention) provides at-a-glance assurance for users and supervisors.
Exceptional Battery Life: Offers up to 18 hours of continuous operation, allowing for multiple or extended shifts between charges.
User-Friendly Design: Large single-button operation and a 180° flip-screen display make it easy to use while wearing gloves and protective gear.

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FAQs

Can the T4 be used for pre-entry checks?

Yes. When used with an aspirator plate and hand bulb or motorized pump, the T4 can draw samples from a confined space before entry. This is a critical safety step for any confined space work system to ensure the atmosphere is safe.

What is the benefit of the “10-way charger” for larger projects?

For sites with large crews, a 10-way cradle charger allows you to centralize charging in a single location like a site office. This ensures that up to 10 units are organized, accounted for, and fully charged for the start of the next shift.

Can PQS Survey Ltd hire, service, and repair my Crowcon T4?

Yes. PQS Survey Ltd maintains a large fleet of Crowcon T4 units for immediate hire. As an authorized service centre, we perform 6-monthly calibrations and in-house repairs at our nationwide depots to ensure your equipment is certified and project delays are avoided.

What makes the Crowcon T4 ideal for a Confined Space safety kit?

The T4 is designed for the “Big Four” gas hazards: Oxygen, LEL, Carbon Monoxide, and Hydrogen Sulphide. It is ruggedized, drop-tested to 4 metres, and features an intuitive one-button interface, making it the standard choice for comprehensive confined space safety kits.

What is the “TWA Resume” feature and why is it unique?

TWA Resume tracks toxic gas exposure over an 8-hour shift and remembers exposure levels if the unit is turned off during breaks. This unique feature ensures workers stay within legal safety limits set by HSE EH40, unlike monitors that reset this calculation when powered down.

How does the “Positive Safety” traffic light system work?

The T4 uses a green/red LED for instant status checks. A flashing green light confirms the unit is compliant and operating correctly, while a red light signals