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Standard Features
UL Listed and FM Approved
Electronic temperature sensing
Style 4, 6, or 7 communication wiring
LED indicator
Alarm flag for fast alarm reporting
Alarm address for fast location of alarm Automatic addressing with the XPERT card Electronics free 4” or 6” bases
Slide-easy bases
Ease of installation
Elegant design
Ideal for environments that are dirty or smoky
under normal circumstances
Well suited for warehouses, loading bays and
parking areas
Unaffected by wind or atmospheric pressure
Overview
The XP95A series analog addressable heat Sensor head, model VF5668, is molded from white polycarbonate material with a low air flow resistance design. Stainless steel wiper contacts connect the sensor to the terminals, which
are polarity insensitive, in the mounting base. Inside the sensor case is a circuit board with the sensing system on one side and the address capture, signal processing, and communication electronics on the other side.
The Sensor monitors temperature by using a single thermistor network, which provides a voltage output proportional to the external air temperature. This analog voltage is converted to a digital signal, which is transmitted to the Elite Fire Alarm Control Panel for interpretation. The alarm threshold is programmed into the Elite Fire Alarm Control Panel.
Operation
The XP95A heat Sensors have a common profile with ionization and photoelectric smoke Sensors, but have a low air flow resistance case made of self extinguishing white polycarbonate. The devices
monitor heat by using a single thermistor network which provides a voltage output proportional to the external air temperature. The standard heat Sensors respond to increasing air temperature in such a way that they are classified as an A2S device. See graph overleaf. Both devices will give 55 counts at 131°F.
A high temperature CS heat Sensor which can be installed in a typical ambient temperature of 131°f is available. This device will give 55 counts at 194°F.
Electrical Description
The Sensors are designed to be connected to a two wire loop circuit carrying both data and a 17V to 28V dc supply. The Sensors are connected to the incoming and outgoing supply via terminals L1 and L2 in the mounting base. A remote LED indicator requiring not more than 4mA at 5V may be connected between +R and -R terminals. An earth connection terminal is also provided.
The Sensor is calibrated to give an analog value of 25±5 counts at 77°F.
Environmental Characteristics
XP95A Standard Heat Sensors operate over the range -4°F to +158°F, the High Temperature Heat Sensors operate over the range –4°F to +248°F. The Sensors are unaffected by atmospheric pressure.
