Respond Swiftly to Fires With Heat Detectors

When it comes to fire and safety, heat detectors are vital devices as they ensure workers can swiftly respond to a fire before it spreads. Since a fire outbreak on a construction site can be fatal, it is crucial to understand how to use a heat detector and the importance of having one on site.

Here at Bull, our ambition is to ensure sites have all the correct fire equipment on site. But with a variety of products and information on the market, it can cause some confusion on which products are right for your business. Our specialist team are here to support you and offer expert advice so you’re confident when choosing your safety equipment.


So how do heat detectors work?

Heat detectors are used to help in the reduction of damaged property if a fire should break out, and therefore provide a cost-effective and efficient solution for your business.

Heat detectors are designed to detect heat instead of smoke, which will ensure workers can react swiftly to a fire before it spreads. They can withstand very harsh environmental conditions and are useful in areas where there are high levels of fumes and dust.

The two types of heat detectors

The choice of the heat detector depends on the premises where it is being used and the layout of the worksite. There are two types of heat detectors that you need to know about:

1. Rate-of-rise (ROR) Heat Detectors

If rapid response to a fire is vital, rate-of-rise heat detectors are an ideal solution where rapid temperature increases would only be caused by a fire emergency. They can be used in a variety of situations including. The ROR detector has two thermocouples that are sensitive to heat – one of the thermocouples monitors heat that is transferred by radiation, and the other thermistor responds to the ambient temperature.

ROR heat detectors may not respond to slowly developing fires therefore in order to detect these fires, usually a fixed temperature element is added to the ROR detector which will be activated when the element reaches the pre-set threshold temperature.

2. Fixed Temperature Heat Detectors

The most commonly used heat detector in the industry, Fixed Temperature Heat Detectors work when the element that is sensitive to heat reaches the point where a solid changes to liquid.

Fixed Temperature Heat Detectors are ideal for use where there is a rapid change in temperature, such as a kitchen or room when an oven door is opened and a sudden rush of heat escapes but the alarm doesn’t go off.

When this occurs, the temperature of the device reaches its operating temperature, after the surrounding air temperature exceeds the device temperature. When this happens, the detector is activated and an alarm is sounded.

Which one is right for your business?

When it comes to heat detection equipment and fire protection, Cygnus’s heat detectors offer superior protection for your business and workers on all types of construction projects.

Cygnus Heat Detectors (ROR Heat Detectors)

Providing essential detection in and out of working hours, our Cygnus Heat Detectors will help transmit and receive all other radio messages from other site alarms to help site wide radio performance.

Using a matched pair of thermistors to sense heat, one thermistor is exposed to the ambient temperature whilst the other is sealed. In normal conditions, the two thermistors register similar temperatures but on the development of a fire, the temperature recorded by the exposed thermistor will increase rapidly, resulting in an imbalance of the thermistors and causing the detector to activate the alarm.

Radio Link Heat Detectors

Our Radio Link Heat Detectors are an alternative solution to the Cygnus heat detectors and provide an ideal solution for an office environment. The aesthetically appealing compact design incorporates an easy-to-fit twist on base and a large easy to use test button. Thanks to the wireless device, it minimises the usage of wires to ensure maximum safety.

Linked into the Cygnus system using the CYGDI detector interface, the Radio Link Heat Detector can control up to 11 smoke, heat or CO detectors, which are coded together to avoid any interference. Additionally, the detector is fully compatible with the Cygnus Wireless Alarm System and the ALM04 Site Evacuation Fire Alarm.

Specialist advice from the experts

At Bull, we pride ourselves on the expertise we give to help businesses protect their employees to the highest heath and safety standards.

For more information and advice about the options available for your business, talk to one of our team of knowledgeable and friendly advisors on 01432 806806 / enquiries@bullproducts.co.uk


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