FDOT500
Low-profile optical heat detector, complete with teach-in circuit and short-circuit isolator
Dual-technology detectors (smoke-heat) work according to the light scattering principle caused by smoke particles present in the air (TYNDALL effect) and on temperature monitoring within the area where they are installed. A micro controller analyses and compares the signal received from a precision heat detector of the NTC type, and activates the alarm if tempe rature goes over 58°C. The smoke detector features an automatic gain control function; a microcontroller calculates reading compensation to keep constant sensitivity
Supply voltage: 20 Vdc (modulated voltage from -15% to + 10%)
Average absorption at rest: 250 uA @ 20 Vdc
Alarm absorption: 2 mA @ 20 Vdc
Static alarm threshold: 58°
Two-colour LED: red alarm - green normal operation
Max relative humidity: 93%
Operating temperature: 0 ÷ +50°C
Weight: 70 g
Dimensions: ø 90 x 40 (H) mm
Certified EN54 part 5 class A1, part 7 and part 17, No. 1293-CPD-0139
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