Single Zone Temperature Alarms (Over Temperature)
The Heat-Hunter 1 detects when the ambient temperature reaches a pre-set upper or lower limit, it can also be used to detect levels of humidity above a point that would cause problems to sensitive equipment. These are our single zone temperature alarms, click here for multizone temperature alarms.
The single zone temperature alarm panel can be connected to either a temperature sensor or humidity sensor, each of these can be set to a specific level that if exceeded will trigger the alarm. A dial enables setting the temperature at which the device switches on and off, the dial is connected through a circuit to the temperature sensor (a bimetal strip) which switches an electrical circuit on and off by bending. The bimetal strip is made of two separate metal strips fastened together: a piece of brass bolted to a piece of iron. Iron expands less than brass as it gets hotter, so the bimetal strip curves inward as the temperature rises, the strip forms part of an electrical circuit. When the strip is cool, it’s straight, so it acts as a bridge through which electricity can flow, when the strip is hotter, it bends and breaks the circuit, so no electricity can flow, this triggers the Heat-Hunter 1 to go into alarm
2 X 2 amp Volt free changeover common alarm relays. Will switch state on any zone detecting an alarm. Useful for connection to an external sounder/beacon or triggering a telephone dialler.
1x 2 amp Volt free changeover common alarm relay, ideal for connection to a BMS. 12VDC output for running low voltage devices directly from the panel up to 500mA.
Power fail relay will switch should the mains power be interrupted. Output connector for Echo repeater panel used for remote monitoring in a different location to the main panel location.
Single Zone Alarm Features
- Measure of over-temperature in data centres and comms rooms.
- Will monitor temperature between 5°C and 30°C.
- More than one temperature sensor can be linked in series.
- Can be used to monitor high humidity between 30 and 100% RH.
- Can be linked to BMS, text diallers and beacon/sounders.