Справочник Пользователя для Siemens Pacemaker UM344-2
UM344-2
CONTENTS
SECTION AND TITLE
PAGE
September 1995
iii
6.1.3 RTD/OHM Type Input Calibration ..............................................................................6-6
6.1.3.1 RTD/OHM Calibration Check............................................................................6-6
6.1.3.2 Current Source Calibration .................................................................................6-7
6.1.4 Thermocouple/Millivolt Type Input Calibration ..............................................................6-9
6.1.4.1 Thermocouple/Millivolt Calibration Check............................................................6-9
6.1.4.2 Narrow/Wide Millivolt Calibration ..................................................................... 6-11
6.2 PREVENTIVE MAINTENANCE .................................................................................... 6-12
6.2.1 Tool and Equipment Requirements............................................................................. 6-12
6.2.2 Transmitter Exterior Inspection.................................................................................. 6-13
6.2.3 Transmitter Exterior Cleaning.................................................................................... 6-13
6.2.4 Transmitter Enclosure Interior Inspection ................................................................... 6-13
6.2.5 Transmitter Calibration.............................................................................................. 6-14
6.3 TROUBLESHOOTING.................................................................................................... 6-14
6.3.1 Preliminary Troubleshooting ...................................................................................... 6-14
6.3.2 Troubleshooting ........................................................................................................ 6-15
6.3.2.1 Diagnostic Messages ....................................................................................... 6-15
6.3.2.2 Possible Transmitter Output Problems ............................................................... 6-19
6.3.3 Diagnosing a Defective Digital (LCD) Meter ............................................................. 6-22
6.3.4 Enclosure Thread Lubrication.................................................................................... 6-23
6.4 NON-FIELD-REPLACEABLE ITEMS ............................................................................ 6-23
6.5 ASSEMBLY REMOVAL AND REPLACEMENT ........................................................... 6-24
6.5.1 Electronics Module Removal and Replacement........................................................... 6-24
6.6 MAINTENANCE RECORDS .......................................................................................... 6-25
6.7 RECOMMENDED SPARE AND REPLACEMENT PARTS............................................ 6-25
6.8 SOFTWARE COMPATIBILITY...................................................................................... 6-26
6.9 RETURN SHIPMENT ..................................................................................................... 6-26
7.0 CIRCUIT DESCRIPTION.....................................................................................................7-1
7.1 ELECTRONICS ASSEMBLY .............................................................................................7-1
7.2 THEORY OF OPERATION................................................................................................7-3
7.2.1 Thermocouple/Millivolt Input ........................................................................................7-3
7.2.2 RTD/OHMS Input.......................................................................................................7-3
7.2.3 Signal Conversion ........................................................................................................7-4
7.2.4 Communication Format................................................................................................7-4
8.0 MODEL DESIGNATION AND SPECIFICATIONS...........................................................8-1
8.1 MODEL DESIGNATION...................................................................................................8-1
8.2 ACCESSORIES .................................................................................................................8-2
8.3 SPECIFICATIONS ............................................................................................................8-5
8.3.1 Mechanical................................................................................................................8-5
8.3.2 Functional and Performance........................................................................................8-5
8.3.3 Two-Wire Cable .........................................................................................................8-7
8.3.4 Sensor Inputs .............................................................................................................8-8
8.3.5 Environmental............................................................................................................8-8
8.3.6 Hazardous Area Classification.....................................................................................8-9
8.3.6.1 CSA Hazardous Locations Precautions ............................................................. 8-11