DI-3IS

SIEMENS DI-3IS IONIZATION DETECTOR INTRINSICALLY SAFE

THE DI-3IS is an ionization detector and is designed for two wire system operation. The Cerberus Pyrotronics fire smoke detectors operate on the ionization principle. The detectors respond to the first traces of fire in the form of visible smoke or invisible products of combustion. The DI-3, DIA3 and DI-B3 have been developed for the wide range of commercial, industrial and institutional fire detection and extinguishing applications. The DI-3, DI-A3 and DI-B3 are approved in environments covered by UL 268 & UL 268A. The DI-3 is designed with adjustable sensitivity while the DI-A3 and the DI-B3 have a fixed sensitivity designed for their individual high air flow applications. The DI-3, DI-A3 and DI-B3 consist of self-compensating dual ionization chambers and a highly stable solid state amplifier-switching circuit. One chamber detects the presence of combustion products, the second chamber serves as a reference, to stabilize the detector’s sensitivity for changes in environmental conditions. As products of combustion enter the sampling chamber, the chamber current is reduced producing a voltage change. At the time the voltage range exceeds the pre-determined threshold, an alarm is signaled to the control unit. The detector locks in upon alarm and must be reset from the control panel.

New - These products are brand new in box, sealed where applicable. Units are covered by original equipment manufacturer (OEM) warranty as applicable.