Position Transmitter Calibration - Emerson Fisher FIELDVUE DVC2000 Instruction Manual

Position Transmitter Calibration

Note
This procedure will not move the
control valve. The instrument will
simulate an output for calibration
purposes only.
This procedure is only available on units that have the
optional position transmitter / limit switch hardware
installed. The DVC2000 digital valve controller is
shipped from the factory with the position transmitter
already calibrated. You do not normally need to
perform this procedure. However, if you suspect that
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
Y
B
POSITION
TRANSMIITTER CAL
July 2009
Basic Setup and Calibration
USE Y OR B
" A "
mA OUT WILL CHANGE
TO SEND 4MA
PRESS " FOR 3 SEC
Figure 3-8. Position Transmitter Calibration
this needs adjustment, follow the procedure below and
refer to figure 3-8.
Connect a current meter in series with the transmitter
output terminals (+31 & −32) and a voltage source
(such as the DCS analog input channel). From the
home screen, press the DOWN (B) arrow key six
times and then press the RIGHT (") arrow key.
1. Use the UP (Y) and DOWN (B) arrow keys to
manipulate the output current read by the current
meter. When 4 mA is read by the meter, press the
RIGHT (") arrow key.
2. Again, use the UP (Y) and DOWN (B) arrow keys
to manipulate the output current read by the current
meter. When 20 mA is read by the meter, 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.
USE Y OR B
A "
A
TO SEND 20MA
SAVE & EXIT?
"
PRESS "
SAVE & EXIT?
EXIT W/O SAVING?
3-11
3