PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer
Instruction Manual
60
Advanced Scaling and Calibration (
SCALE.CAL
)
This menu offers options to scale or calibrate the meter.
Scaling the Input (
SCALE
)
The scale menu in the
Advanced
menu is the same as the scale menu in the
Input
menu. See
) on page
for details about scaling the meter.
Calibrating the Input (
CAL
)
To scale the meter without a signal source, refer to
The meter can be calibrated to display the process in engineering units by applying the appropriate input signal and
following the calibration procedure. The
CAL
menu can be used either with a calibrated current source or with a live
signal coming from a
4-20 mA transmitter connected to the process being measured.
During calibration, the mA input value will be displayed as
INP 1
and
INP 2
. Adjust the input source until the
desired mA value is shown.
The use of a calibrated signal source is required.
Follow these steps to calibrate the input:
1. After accessing the
SCALE.CAL
menu, press the
Right-Arrow
button to scroll to the
Calibration
menu (
CAL
PV
) and press
Enter
.
2. Select the appropriate units for the desired process variable, then press
Enter
. For information on units, see
3. The meter displays
INP 1
. Apply a known signal and press
Enter
. The display will flash while accepting the
signal.
4. After the signal is accepted, the meter displays
DSP 1
. Enter a corresponding display value for the input
signal, and press
Enter
to accept.
5. The meter displays
INP 2
. Apply a known signal and press
Enter
. The display will flash while accepting the
signal.
6. After the signal is accepted, the meter displays
DSP 2
. Enter a corresponding display value for the input signal
and press
Enter
to accept.
7. After completing calibration, the
SAVE?
display will need to be acknowledged using the
Enter
key before
calibration will take effect.
Note:
The
SAVE?
prompt is not displayed
if no changes have been made to the scaling.
