Chemetronics 601

Heat Detector, No Marking, Single Circuit, Rate-of-Rise and Fixed Temperature, 135°F (57°C)

  • Factory New
  • Material Obsolete
Brand: Chemetronics Part #: 1844 Category: Manufacturer Part #: 601


The Series 600 Heat Detector is attractive, durable and features combination rate-of-rise and fixed temperature operation. Heat detectors are available in 135°F and 200°F temperature ratings. Rate-of-rise detects heat by quickly responding to a rapid temperature increase. Rate-of-rise units have a wide spacing allowance of 50-foot centers. Fixed temperature reacts to heat by responding to a specific temperature setting.

Series 600 Detectors use the same reliable pneumatic rate-of-rise element of former models, but offer added aesthetic appeal. The pneumatic rate-of-rise element responds to a rapid rise in temperature, approximately 15°F. (8°C) per minute, by expansion of air within the sealed chamber faster than it can escape through a calibrated vent. The resultant increase in pressure depresses the diaphragm, causing the electrical contact to close the circuit.


Weight 0.2 lbs
Dimensions 4.5625 × 4.5625 × 2.125 in
Detection Method

Fixed Temperature, Rate-of-Rise

Thermal Rating



Production Status




Product Notes

Alternative: 5601P


  • Rate-of-Rise and Fixed Temperature
  • One or Two Circuit, Normally Open
  • Easy Installation
  • Low Profile
  • Visual Indication
  • Operation Testing


Data Sheet: Series 600 Heat Detectors