Heat detector
Heat detector S4BRS-IP65
Additional information
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Description
The S4BRS thermal detector is a fully mechanical device.
Its construction technology make it robust and reliable, suited for industrial and harsh enviroment where electronics devices are not suitable.
Heat detectors S4BRS are supplied and mounted with IP65 enclosure and are available in three main product categories:
S4BRS MAX : Fixed temperature detector. The detector is activated exceeding the maximum temperature .The alarm temperature is calibrated as required by customer over a range of -20÷190°C.
S4BRS SD : Fixed and rate of rise temperature detector. The alarm is activated exceeding the maximum temperature or for a rapid rate or rise of temperature.Range of calibration is -20÷88°C.
S4BRS DF : Rate of rise detector. the alarm is activated on a rapid rise greater than 14°C increase per minute. Range of operating temperature is -20°C÷90°C.
S4BRS detectors are suitable for fire detection and extinguish systems.
Normally, is recommended a temperature of 30÷35°C above the maximum operating temperature of the environment .
The selection of the most appropriate categories of detectors is must be evaluated according to the characteristics of the environment.
S4BRS detectors are common mounted in vertically position but is possible to install horizontally.
The Calibration accuracy for all models is ± 5°C.
The periodic system test of the heat detectors consist by introducing it a heat source that not exceed by 20% the fixed alarm temperature of the detector.
(for example for a heat detector with an alarm point of 100°C we can heat at maximum of 120°C)
Electrical specifications
S4BRS detectors are available N.O and N.C.
The maximum current contact is 2,5 A at 48VDC AC-DC (resistive load).
Mechanical specifications
S4BRS detectors are made from:
Body sensor:
Material: Brass UNI 5705-65/Stainless steel AISI 304.
Brass version is nickel plated to protect it from corrosion.
For temperature above 150°C the body of sensor is made of stainless steel AISI 304.
Thread for both versions:
Brass ¾” GAS heat detector side.
Brass ¾” GAS enclosure side.
Enclosure:
The detectors are mounted in a die-cast aluminium alloy enclosure with IP65 degree of protection. dimensions are 70 or 90 mm with two cable entries threaded ¾” NPT.
On request is available M20 or ½’’NPT threaded adapter.
