ENMET ISA-40 - Manual (Page 2)

Table of Contents
1.0 I NTRODUCTION ........................................................................................................1
1.1 Unpack................................................................................................................................................. 1
1.2 Check Order....................................................................................................................................... 1
1.3 Serial Numbers................................................................................................................................... 1
2.0 F EATURES ..............................................................................................................2
3.0 I NSTALLATION ........................................................................................................3
3.1 Control Unit Mounting and Power Hook-up ................................................................................ 3
3.1.1 Converting to 220 V AC Power ............................................................................................4
3.2 Oxygen Cell Installation................................................................................................................... 5
3.2.1 Oxygen Cell Installation Inside of Control Unit ..............................................................5
3.2.2 Remote Sensor Assembly Wiring.........................................................................................6
3.2.3 Oxygen Cell Installation for Remote Sensors ...................................................................8
3.2.4 Oxygen Gain Adjustment ......................................................................................................8
3.2.5 Circuit board Removal .........................................................................................................8
3.2.6 Intrinsic Safety .......................................................................................................................9
3.3 Relay Outputs..................................................................................................................................... 9
3.3.1 Non-Latching Relays...........................................................................................................10
3.3.2 Latching Relays....................................................................................................................10
4.0 O PERATION .......................................................................................................... 11
4.1 Rough Test........................................................................................................................................ 11
4.2 Precautions Regarding the Cell..................................................................................................... 11
4.3 Atmospheric Pressure Variations.................................................................................................. 11
4.4 Temperature Variations.................................................................................................................. 11
5.0 M AINTENANCE ...................................................................................................... 12
5.1 Cell Aging......................................................................................................................................... 12
5.2 Cell End-of-Life............................................................................................................................... 12
5.3 Circuit Alignment ............................................................................................................................ 12
5.4 Circuit Breakers / Fuse................................................................................................................... 14
6.0 ISA-40 S PECIFICATIONS ........................................................................................ 15
7.0 S ERVICE I NFORMATION .......................................................................................... 15
7.1 Replacement Part Numbers ........................................................................................................... 15
7.2 Return for Repair............................................................................................................................. 16
8.0 WARRANTY....................................................................................................... 17
List of Illustrations
F IGURE 1: ISA-40 C ONTROL U NIT E XTERIOR ................................................................................2
F IGURE 2: M OUNTING D IMENSIONS ..............................................................................................3
T ABLE 1: P OWER S UPPLY W IRING ..............................................................................................3
F IGURE 3: O XYGEN C ELL I NSTALLATION ......................................................................................5
T ABLE 2: R EMOTE S ENSOR A SSEMBLY W IRING ( WITHOUT I NTRINSIC S AFETY B ARRIER )......................6
T ABLE 2A: R EMOTE S ENSOR A SSEMBLY W IRING ( WITH I NTRINSIC S AFETY B ARRIER )..........................6
F IGURE 4: I NTERIOR V IEW OF S ENSOR A SSEMBLY .........................................................................7
F IGURE 5: R EMOTE S ENSOR O XYGEN C ELL I NSTALLATION (O PTIONAL )............................................8
F IGURE 6: U TILIZING THE R ELAY CONTACTS .................................................................................9
T ABLE 3: N ON -L ATCHING R ELAY W IRING ................................................................................... 10
T ABLE 4: L ATCHING R ELAY W IRING .......................................................................................... 10
F IGURE 7: L OCATION OF C IRCUIT B OARDS , T EST POINTS AND P OTENTIOMETERS ............................. 12
N OTE : [important information about use of instrument]
C AUTION : [affects equipment – if not followed may cause damage to instrument, sensor etc…]
W ARNING : [affects personnel safety – if not followed may cause bodily injury or death.]