Aalborg DFM Digital User Manual
Page 4
7.
CALIBRATION PROCEDURES..................................................
7.1
Flow Calibration........................................................................................
7.2
Gas Flow Calibration of DFM Mass Flow Meters......................................
7.2.1
Connections and Initial Warm Up.............................................................
7.2.2
ZERO Check/Adjustment..........................................................................
7.2.3
Gas Linearization Table Adjustment.........................................................
7.3
Analog output Calibration of DFM Mass Flow Meters..............................
7.3.1
Initial Setup..............................................................................................
7.3.2
Gas flow 0-5 Vdc analog output calibration.............................................
7.3.3
Gas flow 4-20 mA analog output calibration............................................
7.3.4
Gas temperature 0-5 Vdc analog output calibration (DFM 27/37/47)......
7.3.5
Gas temperature 4-20 mA analog output calibration (DFM 27/37/47).....
7.3.6
Gas pressure 0-5 Vdc analog output calibration (DFM 27/37/47)............
7.3.7
Gas pressure 4-20 mA analog output calibration (DFM 27/37/47)..........
7.4
Temperature or/and Pressure sensor Calibration.....................................
8.
RS-485/RS-232 SOFTWARE INTERFACE COMMANDS.....................
8.1
General.....................................................................................................
8.2
Commands Structure...............................................................................
8.3
ASCII Commands Set...............................................................................
9.
TROUBLESHOOTING............................................................
9.1
Common Conditions................................................................................
9.2
Troubleshooting Guide.............................................................................
9.3
Technical Assistance................................................................................
10.
CALIBRATION CONVERSIONS FROM REFERENCE GASES................
APPENDIX I
AALBORG DFM EEPROM Variables.................................................
APPENDIX II INTERNAL USER SELECTABLE GAS FACTOR TABLE......................
(INTERNAL "K" FACTORS)
APPENDIX III GAS FACTOR TABLE ("K" FACTORS)................................................
APPENDIX IV COMPONENT DIAGRAM..................................................................
APPENDIX V DIMENSIONAL DRAWINGS.............................................................
APPENDIX VI WARRANTY.....................................................................................
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