ENMET ISA-44-RALE-OD - Manual (Page 3)

Table of Contents
1.0 I NTRODUCTION ................................................................................................................................ 1
1.1 Unpack.................................................................................................................................................................................2
1.2 Check Order........................................................................................................................................................................2
1.3 Serial Numbers ...................................................................................................................................................................2
1.3 Calibration Explained for the ISA-44RALE-OD..........................................................................................................4
1.4 Special Characteristics ......................................................................................................................................................5
1.5 Calibration Explained for the ISA-44E-OD...................................................................................................................5
2.0 F EATURES OF ISA-44RALE-OD / ISA-44E-OD ................................................................................. 6
3.0 I NSTALLATION AND W ARM - UP ......................................................................................................... 10
3.1 Sensor Location for ISA-44E-OD .................................................................................................................................10
4.0 O PERATION .................................................................................................................................. 14
4.1 Operation of the ISA-44RALE-OD...............................................................................................................................14
4.3 Operating Alarm Conditions..........................................................................................................................................15
5.0 R OUGH T EST ................................................................................................................................ 17
5.1 ISA-44RALE-OD.............................................................................................................................................................17
5.2 Rough Test ISA-44E-OD................................................................................................................................................18
6.0 C ALIBRATION ............................................................................................................................... 19
6.1 CO Channel Calibration..................................................................................................................................................20
6.2 Oxygen Channel Calibration..........................................................................................................................................21
6.3 Routine Gas Test and Recalibration ISA-44E-OD.....................................................................................................22
6.3.1 Routine Gas Test ..................................................................................................................................................23
6.3.2 Recalibration Procedure ....................................................................................................................................24
6.3.3 Precautions...........................................................................................................................................................24
7.0 R EPLACEMENT P ROCEDURES .......................................................................................................... 25
7.1 Sensor Replacement ISA-44RALE-OD .......................................................................................................................25
7.2 LED Replacement............................................................................................................................................................26
7.3 Intrinsic Safety Barrier Replacement............................................................................................................................27
7.4 Sensor Hook-Up and Replacement for ISA-44E-OD ................................................................................................27
7.5 Sensor Heater Voltage.....................................................................................................................................................28
7.6 Sensor Assembly Replacement......................................................................................................................................28
7.7 Hydrocarbon Filter Replacement...................................................................................................................................28
8.0 R EPLACEMENT P ART N UMBERS ...................................................................................................... 29
9.0 S PECIFICATIONS ........................................................................................................................... 29
10.0 WARRANTY............................................................................................................................. 30
List of Illustrations
T ABLE 1: G RADE D B REATHING A IR ....................................................................................................................4
F IGURE 1: F EATURES ISA-44E-OD C ONTROL U NIT D ISPLAY P LATE ........................................................................6
F IGURE 2: F EATURES S AMPLE H EAD A SSEMBLY ...................................................................................................8
F IGURE 3: F EATURES T ERMINAL E NCLOSURE WITH S ENSORS & C ONTROL U NIT ........................................................8
T ABLE 2: S ENSOR L OCATION ........................................................................................................................... 10
F IGURE 4: I NTERIOR T ERMINAL E NCLOSURE ....................................................................................................... 12
T ABLE 3: W IRING I NFORMATION T ERMINAL E NCLOSURE ....................................................................................... 12
F IGURE 5: V IEW OF T ERMINAL P LATE ................................................................................................................ 13
T ABLE 4: W IRING I NFORMATION T ERMINAL P LATE ............................................................................................... 13
F IGURE 6: C ALIBRATION F IXTURE WITH S AMPLE H EAD A SSEMBLY ........................................................................ 17
F IGURE 7: C ONTROL U NIT CO C HANNEL ........................................................................................................... 20
F IGURE 8: C ONTROL U NIT O XYGEN C HANNEL ..................................................................................................... 21
F IGURE 9: C ALIBRATION A DAPTER ISA-44E-OD ................................................................................................ 22
T ABLE 5: R OUTINE G AS T EST T IMETABLE .......................................................................................................... 23
F IGURE 10: MOS S ENSOR A SSEMBLY , C UT A WAY V IEW ..................................................................................... 25
F IGURE 11: O XYGEN C ELL E NCLOSURE ............................................................................................................. 26
F IGURE 12A: O XYGEN C ELL E NCLOSURE .......................................................................................................... 27
F IGURE 12B: MOS S ENSOR E NCLOSURE .......................................................................................................... 27