601 Rate of Rise Heat Detector

The Series 600 detector offers Rate-of-Rise and Fixed Temperature properties, with 135ºF (57ºC) or 200ºF (94ºC) settings, visual indication, Single or Dual circuit options, and normally open contacts, incorporated into an attractive, low profile design.

Description
The Series 600 heat detector is attractive, durable and features a combination rate-of-rise and fixed temperature operation. The heat detectors are available in 135ºF (57ºC) or 200ºF (94ºC) temperature ratings.

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. See Specification Table for details.

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 either 135ºF (57ºC) or 200ºF (94ºC). When activated, the external heat collector drops away to provide quick visual confirmation that the element has operated.

Low Profile
The units protrude only 1-3/8 inches from the ceiling surface with a junction box mounting. The pleasantly contoured, all-white finished design conforms aesthetically to most ceilings.