145
When trimming the Digital Output
(PV), the Input window displays the
instrument’s input signal measured
by MC5P. The Output window dis-
plays the digital output of the instru-
ment.
The lower part of the Output win-
dow includes an additional trim
field. Use either the C/Fetch Func-
tion Key to copy the value shown
in the input window or manually
enter a value the digital output
should be trimmed to. Then use the
D/Send Function Key.
When trimming the Analog Output
(AO), the Input window displays
the current set point communicated
by MC5P. The Output window dis-
plays the current generated by the
instrument and measured by
MC5P.
Again, the lower part of the Output
window includes an additional field.
Use either the C/Fetch Function
Key to copy the value shown in the
Output window or manually enter
a value that is the correct output
current. Then use the D/Send Func-
tion Key.
Note.
Some of the menu options may be disabled when trimming certain HART
instruments. Refer to the HART instrument’s manual for device dependent
information concerning the trimming procedure.
11.11.2003 14:55
Input
Error
1.00
Output
bar
1.021
-0.04 % of span
1.029
+
0
-
0% 50% 100%
Pressure [P1:INT20C]
Pressure [E: HART \ PV]
bar
Trim 0% to:
Trim
End
Fetch MENU
Gauge
1.029
11.11.2003 14:54
Input
Error
1.00
Output
mA
3.9982
N/A % of span
4.0000
+
0
-
0% 50% 100%
Current [Keyed]
Current [E: Meas.]
mA
Enter measured 0%
Trim
End
Fetch MENU
3.9982
Calibrating a HART Instrument