Bench Calibration - ABB STT04 Instruction Manual

PTH PRESSURE TRANSMITTER

Bench Calibration

Key
OUTPUT WILL BE
AFFECTED! PROCEED?
C A LI-
B R ATE
→ YES
CALIBRATION
E N TE R
→ BENCH CALIB.
LOW CALIB PRESSURE
E N TE R
HIGH CALIB PRESSURE
APPLY PRESSURE OF
E N TE R
APPLY PRESSURE OF
E N TE R
CALIBRATION
D - 6
This procedure applies to PTH pressure transmitters configured for
either ANALOG or DIGITAL. Any differences between the two are
noted in the Comments
Display
NO
D-TO-A ADJUST
REZERO
nn.nn UNITS
nn.nn UNITS
nn.nn UNITS
THEN HIT ENTER
nn.nn UNITS
THEN HIT ENTER
column.
Comments
This operation will cause a change in output not cor-
responding to the input. Be sure the control loop is in
manual.
Select YES.
Select BENCH CALIB.
If the transmitter is configured for digital operation,
the D-TO-A ADJUST selection would not appear.
Enter the low calibration pressure value and press
. Enter the high calibration pressure value.
ENTER
Apply the low calibration pressure to the input of
transmitter as specified earlier.
Apply the high calibration pressure to the input of
transmitter as specified earlier.