Fire Alarm Maintenance FAQs
Here are a selection of the most frequently asked questions we receive about Fire Alarms and the maintenance. If you need further information regarding fire alarm maintenance or any of our other services please call us on 0330 6600264 or email [email protected]
There are 3 different types of smoke detectors:
Optical – work on the principal of infra-red light refracting off smoke particles entering the chamber. This makes the detectors more sensitive to smouldering fires such as modern fabrics or furnishings. Also more prone to false alarms from steam or dusty environments.
Beam Detectors – works as an infra-red beam is emitted from the transmitter (TX) to the receiver (RX), which detects any obstruction by smoke.
Ionisation – works on the principal of charred smoke particles passing between two electrodes causing a small current flow. This detector is more suited for fast flaming fires such as paper/wood. Also more prone to false alarms from burning smells outside kitchens etc.
There are 2 types of heat detectors:
Rate of rise – these detectors will respond to a sudden increase in temperature and also have a fixed element in case of a slow smouldering fire. Most suitable for areas where is a smoke detector is undesirable i.e. a staff room.
Fixed temperature – have a sensing element which operates the detector when a particular temperature is reached. This type of detector is ideal for rooms where a rate of rise detector would not be suitable such as a kitchen or a boiler room.