Analog Devices



Ampac XP95 Multi Sensor Detector
The XP Multisensor detector contains an optical smoke sensor and a themistor temperature sensor whose outputs are combined to give the final analogue value.



Ampac XP95 Isolator
Isolators are designed to protect the XP95 loop in the event of a short circuit fault. They divide a loop of fire detectors and interfaces into groups of up to 20, so that in the event of a short circuit, no more than 20 devices will be inoperable.

Ampac XP95 Call Point
When operated, the manual call point interrupts the polling cycle and can report its address is under 0.2 seconds.




Ampac Monitor Module
Designed to monitor the state of one or more single-pole, volt-free contacts connected on a single pair of cables. Reports open and short-circuit faults on the circuit. The device produces the output states normal, fault, pre-alarm, and alarm.

Ampac Input/Output Module
The Three Channel Input/Output Unit provides three voltage-free, single pole, change-over relay outputs and three monitored switch inputs. The unit is designed to supervise one or more normally open switches on each of the three inputs.




Ampac XP95 Ionisation Detector
Air in the dual sensing chambers is irradiated to produce ions that travel to the positive and negative electrodes, creating a current flow. As smoke enters the outer chamber the flow drops and voltage increases. The voltage is measured and an analogue signal is converted to digital for transmission to control equipment. Pre-alarm or fire alarm is instigated by the micro-processor when smoke density increases to pre-set levels.



Ampac XP95 Optical Detector
The XP95 optical detector uses an internal pulsing LED and a photo-diode at an obtuse angle. In the event of smoke entering the chamber, the light pulse from the LED will be scattered and registered by the photo-diode. A signal is generated and transmitted digitally using the same method as the ionisation smoke detector above.

Ampac XP95 Heat Detector
The XP95 Heat Detector has a low air-flow resistant case for good contact between sensing thermistor and surrounding air. Temperature is measured by a single thermistor network which gives a voltage output proportional to the external air temperature. The signal is processed and transmitted to control equipment.