Spectrex 20/20MU - Mini Flame Detector - Manual (Page 5)

Spectrex Inc. - SharpEye TM ML & MU Flame Detector Manual – TM 767100, Rev. A, April 2005
I
T ABLE OF CONTENTS
1. Scope ..................................................................................................... 1
1.1 P RODUCT O VERVIEW .....................................................................................1
1.2 D OCUMENT O VERVIEW ...................................................................................1
2. Technical Description ............................................................................. 2
2.1 P RINCIPLES O F O PERATION ............................................................................2
2.2 S ENSING E LEMENTS ......................................................................................3
2.3 M ODBUS RS-485 ..........................................................................................3
2.4 T YPES AND M ODELS ......................................................................................4
3. Performance........................................................................................... 8
3.1 D ETECTION S ENSITIVITY .................................................................................8
3.2 C ONE O F V ISION .........................................................................................10
3.3 F ALSE A LARMS P REVENTION ........................................................................11
4. Operation ............................................................................................. 13
4.1 V ISUAL I NDICATIONS ....................................................................................13
4.2 O UTPUT S IGNALS ........................................................................................14
4.2.1 Optional latching .................................................................................15
4.2.2 Built-In-Test ........................................................................................15
4.3 D ETECTOR M ODE S ETUP ..............................................................................15
4.3.1 Detector setting...................................................................................15
4.3.2 Detector’s various functions................................................................15
4.3.3 Detector Default Set Up ......................................................................17
4.4 B UILT I N T EST .............................................................................................17
4.4.1 General ...............................................................................................17
4.4.2 Principles ............................................................................................17
4.4.3 Automatic & Manual BIT .....................................................................18
4.4.4 Manual BIT only..................................................................................18
5.Technical Specifications ........................................................................ 19
5.1 E LECTRICAL S PECIFICATIONS .......................................................................19
5.2 M ECHANICAL S PECIFICATIONS ......................................................................20
5.3 E NVIRONMENTAL S PECIFICATIONS .................................................................21
6. Installation Instructions......................................................................... 22
6.1 S COPE ........................................................................................................22
6.2 G ENERAL C ONSIDERATIONS .........................................................................22
6.3 P REPARATION FOR I NSTALLATION ..................................................................23
6.4 I NSTALLATION ..............................................................................................24
6.4.1 Tilt Mount Kit P/N 787639 ...................................................................24
6.4.2 Tilt installation (Figs. No. 6 and 7) ......................................................24
6.5 D ETECTOR M OUNTING .................................................................................27
6.6 W IRING F UNCTION .......................................................................................27
6.7 O PERATION M ODE .......................................................................................28
7. Operating Instructions .......................................................................... 29
7.1 S COPE ........................................................................................................29
7.2 P OWER -U P .................................................................................................29
7.3 R ESET ( ONLY WHEN OPTIONAL ‘ LATCHING ’ ALARM HAS BEEN SELECTED )...........29