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Đầu báo khói ion địa chỉ
Đầu báo khói ion địa chỉ

Đầu báo khói ion địa chỉ

Còn hàng

Standard Features Compatible with Elite and Elite RS control panels 5 operating modes Drift compensation Address is set by X-Pert card and is...

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Standard Features

Compatible with Elite and Elite RS control panels

5 operating modes

Drift compensation

Address is set by X-Pert card and is stored in base

User memory

Alarm flag for fast alarm reporting

Conventional false safe mode

Polarity insensitive

Fits 4” & 6” low profile base

6” audible base

4” wire relay base

Note:

Bases and cards are not included with Sensors, please order separately.

Overview

The VF5600 Discovery Ionization Smoke Sensor has a molded white polycarbonate case with windresistant smoke inlets. Inside the case is a printed circuit board which
has the ionization chamber mounted on
one side and the signal processing and communications electronics on the other. The ionization chamber consists of a reference chamber contained inside a smoke chamber. The outer smoke chamber has inlet apertures fitted with insect resistant mesh.

Operation

The radioactive source holder and the smoke chamber form positive and negative electrodes respectively. An Americium 241 radioactive source mounted within the reference chamber irradiates the air in both chambers, producing positive and negative ions.

A voltage across the electrodes produces
an electric field. Ions are attracted to the Electrode of the opposite sign to their own charge; many recombine but a small electric current flows between the electrodes. At the junction between reference and smoke chambers, the sensing electrode converts variations in chamber current into voltage hanges.

When smoke particles enter the ionization chamber, ions become attached to them with the result that the current flowing through the chamber decreases. This effect is greater in the chamber decreases.

VF5600