Analog Input Calibration - Emerson Fisher FIELDVUE DVC2000 Instruction Manual

DVC2000 Digital Valve Controller

Analog Input Calibration

During calibration you will be asked to
move the valve full stroke. To avoid
personal injury and property damage
caused by the release of pressure or
process fluid, provide some temporary
means of control for the process.
3
The DVC2000 digital valve controller is shipped from
the factory with the analog input already calibrated.
You do not normally need to perform this procedure.
TRAVEL = 66.8%
14.6 MA 0.92 BAR
Y
B
QUICK SETUP
Y
B
TRAVEL
CALIBRATION
Y
B
TUNING
Y
B
DETAILED SETUP
Y
B
ANALOG
INPUT
CALIBRATION
3-10
WARNING
VALVE WILL MOVE
A
"
PRESS " FOR 3 SEC
Figure 3-7. Analog Input Calibration
However, if you suspect that this needs adjustment,
follow the procedure below, and refer to figure 3-7.
Connect a variable current source to the instrument
+11 and −12 terminals. From the home screen, press
the DOWN (B) arrow key five times and then press
the RIGHT (") arrow key. Acknowledge the warning if
you are sure that you want to proceed.
1. Adjust the variable current source to 4 mA.
2. Press the RIGHT (") arrow key
3. Adjust the variable current source to 20 mA.
4. Press the RIGHT (") arrow key.
If you want to keep this calibration, select SAVE AND
EXIT. If you exit without saving, the last saved
configuration data will be restored.
APPLY 4MA
APPLY 20MA
"
A
"
THEN PRESS "
THEN PRESS "
SAVE & EXIT?
A "
PRESS "
SAVE & EXIT?
EXIT W/O SAVING?
July 2009