Description

Siemens PBA-1191 Linear Beam Detector

**Compatibility**
– MXL (Models CZM-4 and CZM-1B6)
– FireFinder TM XLS (Models HZM and CDC-4)
– System 3TM (Model ZB-35)

**Key Features**
– Two-wire installation
– Easy alignment and installation
– High immunity to extraneous light
– Suitable for ranges from 17 ft. to 280 ft. (5M to 100M in Canada)
– Automatic and comprehensive self-test
– Automatic digital compensation for ambient influences
– Transmitter and receiver in the same housing
– Selectable response behavior with three sensitivity settings
– Operates on the principle of light-attenuation-by-smoke
– Integrated multi-coincidence circuit suppresses electric and optical noise signals
– UL Listed, ULC Listed

**SiemensLinear Beam Detector Overview**
Linear Beam Detectors (Model PBA-1191) from Siemens Industry. Fire Safety offers reliable monitoring over long distances, ranging from 17 to 280 feet. Model PBA-1191 works with various types of reflectors, depending on each reflector’s installation requirements.

**Operation**

**Initial Function**
Model Linear Beam Detector includes a transmitter (IRLED) that emits an invisible infrared (IR) pulse through the transmitter lens. As the IR pulse crosses the protected area. It reaches the reflector opposite the detector and th en reflects to the detector. The receiver lens th en directs the reflected IR pulse to a silicon photodiode. The detector electronics evaluate the resulting electrical signal.

B ecause smoke particles scatter and absorb the IR pulse, this leads to an alarm condition.

**Sensitivity Settings**
Model Linear Beam Detector offers three sensitivity settings:
– Reduced
– Standard
– Increased

DIP switches S1 and S2 set the response threshold. Wh ile DIP switch S3 adjusts the transmitter intensity, strong or weak. Users can customize the sensitivity according to their specific needs.

Datasheet

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