Output D/A Calibration - ABB STT04 Instruction Manual

Output D/A Calibration

Key
OUTPUT WILL BE
AFFECTED! PROCEED?
C A LI-
B R ATE
→ YES
E N TE R
→ OUTPUT D/A CAL
D/A CAL USING
→ UPDOWN ARROW KEYS
E N TE R
METER VALUE ENTRY
ADJUST TO 4 mA
E N TE R
THEN HIT ENTER
Output D/A Calibration is used to trim the output signal to maintain
precise transmission of the process variable. The procedure that fol-
lows details output adjustment using the arrow keys. Adjustment can
be made by meter value entry. Refer to
ing to meter value entry adjustment.
Display
NO
nnnn CAL
EDIT CAL
RESET CAL
TB82 TRANSMITTER
Appendix B
Comments
This operation will cause a change in output not cor-
responding to the input. Selecting YES will hold the
output during calibration.
Select YES.
Select OUTPUT D/A CAL.
Select UPDOWN ARROW KEYS. Use the arrow
keys to adjust the output to a value other than 4 or
20 mA.
Use the METER VALUE ENTRY to adjust the output
to 4 and 20 mA. Refer to Appendix B
about meter value entry.
Use the arrow keys to adjust output to 4 mA.
NOTE: When increasing or decreasing the mA sig-
nal, the increments of change increase with succes-
sive depressions until the maximum level of change
is reached. By changing direction you will return to
the smallest increment of change. This adjustment
technique speeds up the adjustment process without
affecting fine adjustment.
for details pertain-
for details
CALIBRATION
N - 11