Vaisala DMP248 - The operating principle of the DMP248

OPERATING MANUAL_______________________________________________________________
II______________________________________________________________________M210492EN-A
Using LED commands .................................................................................................................................64
CHAPTER 7 MAINTENANCE.........................................................................................................................67
REFERENCE MEASUREMENTS.............................................................................................................................67
SELF-DIAGNOSTICS ............................................................................................................................................67
TEMPERATURE CHANNEL ADJUSTMENT WITH PT 100 SIMULATORS ...................................................................68
MEASUREMENT OF OUTPUT CURRENTS USING TEST POINTS ...............................................................................70
ADJUSTING THE CONTRAST OF THE DISPLAY......................................................................................................71
VAISALA SERVICE CENTERS..............................................................................................................................71
CHAPTER 8 TECHNICAL DATA...................................................................................................................72
MEASURED VARIABLES......................................................................................................................................72
OUTPUTS............................................................................................................................................................73
GENERAL...........................................................................................................................................................74
ELECTRONICS ....................................................................................................................................................75
SERIAL INTERFACE MODULES.............................................................................................................................75
ELECTROMAGNETIC COMPATIBILITY .................................................................................................................76
CHAPTER 9 OPTIONS......................................................................................................................................76
CHAPTER 10 SPARE PARTS AND ACCESSORIES ....................................................................................77
APPENDIX 1 SERIAL COMMANDS...............................................................................................................79
APPENDIX 2 POWER SUPPLY MODULE ..................................................................................................101
APPENDIX 3 INSTALLING AND USING THE RS 485/422 SERIAL PORT MODULE.........................105
APPENDIX 4 INSTALLING AND USING THE CURRENT LOOP MODULE........................................115
APPENDIX 5 ERROR MESSAGES................................................................................................................125
APPENDIX 6 WIRING DIAGRAM................................................................................................................129
APPENDIX 7 ALARM OUTPUT UNIT .........................................................................................................131
APPENDIX 8 PRESSURE CONVERSION CHART.....................................................................................137
PRESSURE CONVERSION CHART........................................................................................................................137
Multiplication factors .............................................................................................................................................137