FDOT400

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 temperature 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: 65 μA @ 20 Vdc

Alarm absorption: 23 mA @ 20 Vdc

Static alarm threshold: 58° C ± 5%

3-colour LED: red alarm - green normal operation - yellow maintenance required - green
flashing with a sequence of yellow flashing system malfunction.

Minimum reset time: 300 mS

Max relative humidity: 93%

Operating temperature: -10° ÷ +55° C

Material: ABS V0

Weight: 70 g

Dimensions: ø 90 x 40 (H) mm

Certified EN54 part 5 class A1 and part 7, No. 1293-CPD-0178

Manuel d'utilisation Low-profile visual heat detector