SharpEye 20/20MPI, Руководство пользователя и по обслуживанию

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Principles of Operation 15
2 Technical Description
➣
In this chapter…
Features page 15
Principles of Operation page 15
2.1 Features
The SharpEye Model 20/20MPI Mini Triple IR (IR3) Flame Detector includes
the following features:
 Detection Range : up to 140ft/43m for a 1ft
2
/0.1m
2
n-heptane pan fire
 Ultra High Immunity to False Alarms (see False Alarms Prevention ,
page 22)
 Advanced Digital Processing of the Dynamic Characteristics of
Fire
: Flickering, Threshold correlation, and Ratio
 3 Separate IR Channels : Between 3–5 microns
 Field Programmable Sensitivity : 4 ranges
 2 Response Levels : Warning and Detection
 Solar Blind
 Microprocessor Based : Digital signal processing
 Built-In-Test (BIT) : Manual and Automatic
 2 Options of Electrical Interface:
 20/20MPI-R: Dry contact relays
 20/20MPI-M: 0–20mA output (stepped)
 Functional Approvals :
 EN54-10 approved per VdS
 FM approved per FM3260
2.2 Principles of Operation
2.2.1 Hydrocarbon Fire Detection
The triple IR flame detector detects all conceivable types of hydrocarbon
fires, i.e. any fire which emits CO
2
.
www.acornfiresecurity.com
www.acornfiresecurity.com