Mô tả

Đầu báo khói quang SIEMENS OP921

– The Photoelectric Smoke Detector (Model OP921) uses state-of-the-art microcontroller circuitry and surface-mount technology for maximum reliability. Model OP921 incorporates an optical sensor using a light-scattering detection principle. The device utilizes advanced software algorithms to analyze the signals, and provides highly stable and accurate smoke detection.

– Model OP921 also uses state-of-the-art microprocessor circuitry with error check; detector self-diagnostics, and supervision programs.

Thông số kỹ thuật

Model	OP921
Operating Temperature	+32°- +120°F (0° – +49°C)
Relative Humidity	0 – 95% (non-condensing)
Air Velocity	0 – 4,000 feet-per-minute (fpm) (0 – 20 meters-per-second)
Input Voltage Range	16VDC – 30VDC
‘Alarm’ Current, Max	410μA
‘Standby’ Current, Max	250μA
Detector Weight	0.317 Lbs. (0.144 kg.)
Mechanical Protection Guard	UL and ULC Listed (with STI Guard Model STI-9604)
Sensitivity Range	1.08 – 2.72% / ft obs. (Nominal 2.0% / ft. obs.)