Linear Heat Detection Systems

Chiller Warehouse Protected by Alarmline

Alarmline LHD Systems

Alarmline Linear Heat Detection Systems are more reliable and have lower maintenance costs compared to conventional detectors. Types are available for virtually any environment. Alarmline is ideal for dirty, windy and dusty environments where point heat detection cannot be used. Typical applications include cable tunnels, conveyor belts, underground car parks, power generation, warehouses and floating roof fuel storage tanks.

ALARMLINE DIGITAL

Comprises a twin-conductor "switching" cable with temperature-sensitive insulation protected by a special sheath. It operates by melting of the insulation between the conductors at a pre-determined temperature. This creates a short circuit which is detected by a simple electrical device, which in turn provides a fire alarm signal. Fault conditions are detected by continuous monitoring for an open circuit state.

Link to Data Sheet

ALARMline analogue

Consists of a four-conductor cable surrounded by an outer sheath of PVC. A change in temperature produces a change in resistance, which is monitored by an Alarmline Control Unit, which in turn actuates an alarm signal at a predetermined level. The cable is continuously monitored for open and short circuit fault conditions. It detects either a localised hot spot or a lower level of temperature increrase over the entire length. It is recoverable after operation.

Link to Data Sheet