Aalborg DFM Digital User Manual
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5.
Save TempOutScaleV in to the EEPROM: !11,MW,29,X[CR]
Where: X - the calculated TempOutScaleV value.
7.3.5 Gas temperature 4-20 mA analog output
calibration (DFM 27/37/47)
1. Install jumpers J3 on the analog PC board for 4-20 mA output (see Table VI).
2.
Connect a certified high sensitivity multi-meter set for the current
measurement to the pins 3 (+) and 16 (-) of the 25 pins D connector.
3.
Write 4000 counts to the DAC channel 2: !11,WRITE,2,4000[CR]
4.
Read current with the meter and calculate:
5.
Write zero counts to the DAC channel 2: !11,WRITE,2,0CR]
6.
Read offset current with the meter and calculate:
7. Save TempOutScale_mA in to the EEPROM:
!11,MW,30,Y[CR]
Save TempOutOffset_mA in to the EEPROM:
!11,MW,31,Z[CR]
Where: Y - the calculated TempOutScale_mA value.
Z - the calculated TempOutOffset_mA value.
7.3.6 Gas pressure 0-5 Vdc analog output
calibration (DFM 27/37/47)
1. Install jumpers J4 on the analog PC board for 0-5 Vdc output (see Table VI).
2.
Connect a certified high sensitivity multi-meter set for the voltage
measurement to the pins 4 (+) and 17 (-) of the 25 pin D connector.
3.
Write 4000 counts to the DAC channel 3: !11,WRITE,3,4000[CR]
4.
Read voltage with the meter and calculate:
5.
Save PresOutScaleV in to the EEPROM: !11,MW,32,X[CR]
Where: X - the calculated PresOutScaleV value.