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Fire Detection Sensors
System Sensor BK-5601P
Rate of Rise and Fixed Temperature (135F) Heat Sensor
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combination rate-of-rise and fixed temperature (135F) operation.  
contacts are incorporated into an attractive, low profile design.

Rate-of-Rise
The rate-of-rise function detects heat quickly by responding to a
rapid temperature increase. The pneumatic element responds to a
rapid rise in temperature, approximately 15ºF (8ºC) per minute, when
the air expands faster within the sealed chamber than it can escape
through the calibrated vent. The increase in preessure depresses
the diaphragm, causing the electrical contacts to close the circuit.
Rate-of-rise units have a wide spacing allowance of 50 foot centers.

Fixed Temperature
The fixed temperature function reacts to heat by responding to a
specific temperature setting. The element is constructed of a fusible
alloy, which fuses at the fixed temperature setting of 135ºF (57ºC).
When activated, the external heat collector drops away to provide
quick visual confirmation that the element has operated.

Low Profile
The units protrude only 1-3/4 inches from the ceiling surface with a
junction box mounting. The pleasantly contoured, all-white finished
design conforms aesthetically to most ceilings.

Brochure

Installation Instructions

System Sensor BK-5602
Rate of Rise and Fixed Temperature (194F) Heat Sensor
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Price:

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