Spectrex 20/20MI - Mini Triple IR (IR3) Flame Detector - Manual (Page 5)

Spectrex Inc. - SharpEye TM Mini IR3 Flame Detector Manual – TM 787100, Rev. D April 2011
I
T ABLE OF CONTENTS
1. Scope ..................................................................................................... 1
1.1 P RODUCT O VERVIEW .....................................................................................1
1.2 D OCUMENT O VERVIEW ...................................................................................2
2. Technical Description ............................................................................. 3
2.1 P RINCIPLES O F O PERATION ............................................................................3
2.1.1 Hydrocarbon fire detection....................................................................3
2.1.2 Identifying the CO
2
peak .......................................................................3
2.1.3 The limitations of IR-IR flame detectors ................................................3
2.1.4 The advantages of IR3 technology .......................................................3
2.1.5 Modbus RS-485....................................................................................4
2.1.6 Use in Hazardous Atmosphere .............................................................4
2.1.7 Types and Models ................................................................................5
3. Performance........................................................................................... 9
3.1 D ETECTION S ENSITIVITY .................................................................................9
3.2 C ONE O F V ISION .........................................................................................11
3.3 F ALSE A LARMS P REVENTION ........................................................................12
4. Operation ............................................................................................. 14
4.1 V ISUAL I NDICATIONS ....................................................................................14
4.2 O UTPUT S IGNALS ........................................................................................15
4.2.1 Optional latching .................................................................................16
4.2.2 Built-In-Test ........................................................................................16
4.3 Detector Mode Setup .............................................................................16
4.3.1 Detector setting...................................................................................16
4.3.2. Detector’s various functions...............................................................16
4.3.3. Detector Default Set Up .....................................................................18
4.4 B UILT I N T EST .............................................................................................18
4.4.1. General ..............................................................................................18
4.4.2. Principles ...........................................................................................19
4.4.3. Automatic & Manual BIT ....................................................................19
4.4.4. Manual BIT only.................................................................................19
5.Technical Specifications ........................................................................ 20
5.1 E LECTRICAL S PECIFICATIONS .......................................................................20
5.2 M ECHANICAL S PECIFICATIONS ......................................................................21
5.3 E NVIRONMENTAL S PECIFICATIONS .................................................................22
6. Installation Instructions......................................................................... 23
6.1 S COPE ........................................................................................................23
6.2 G ENERAL C ONSIDERATIONS .........................................................................23
6.3 P REPARATIONS FOR I NSTALLATION ................................................................24
6.4 C ERTIFICATION I NSTRUCTIONS ......................................................................25
6.5 C ONDUIT I NSTALLATION ................................................................................26
6.5.1 Tilt Kit P/N 787639 ..............................................................................26
6.5.2 Tilt installation (Figs. No. 6 and 7) ......................................................26
6.6 D ETECTOR M OUNTING .................................................................................29
6.7 W IRING F UNCTION .......................................................................................29