Description

The Siemens PE-3 Series Photoelectric Smoke Detector operates on the light scattering principle. The improved photo chamber, because of its advanced design; is highly immune to false and nuisance alarm causing conditions such as dust and condensation. The detector is design with a field cleanable photo chamber. The Siemens PE-3 Series Detector provides an excellent response to a broad spectrum of both flaming and smoldering fire conditions. The PE-3 has been develop for use in a wide range of commercial, industrial, institutional and residential applications.

The PE-3 Series contains a light emitting diode (LED) and a light sensing photodiode arranged in a pattern so that, under normal conditions, the light emitted by the LED does not reach the photodiode. When smoke enters the photo chamber, light emitted from the LED is scatter by the smoke particles and received by the photodiode. The electrical signal produced by the photodiode is amplified by the detector circuitry and compared to a preset alarm threshold level. When the electrical signal is greater than the preset threshold, the detector verifies the alarm condition and then locks into alarm. The PE-3 Series must be reset at the control panel.

Features / Specifications

• Advanced Photo Chamber Design
• High Immunity Against Dust
• Resistant to Condensation and Other Nuisance Alarm Causing Conditions
• Field Cleanable Photo Chamber
• Detector Alarm Verification