EQN TEMPERATURE TRANSMITTER
CALIBRATION
H - 5
Refer to Figure H-2 for an overview of the calibration functions.
Bench Calibration
This procedure applies to EQN Transmitters configured for either
ANALOG or DIGITAL. Any difference between the two are noted in
the Comments column.
Figure H-2. Calibration Flowchart (EQN)
T01328A
ENTER
AMBIENT
TEMPERATURE
CALIBRATION
COMPLETE
BENCH
THERMOCOUPLE
D-TO-A
APPLY 0 mV
SIGNAL
ADJUST
OUTPUT TO
4 mA
ADJUST
OUTPUT TO
20 mA
ADJUST
OUTPUT TO
20 mA
APPLY 25 mV
SIGNAL
ENTER HIGH
CALIBRATION
UNITS
ENTER LOW
CALIBRATION
UNITS
BENCH
RTD, mV
APPLY LOW
CALIBRATION
UNITS
ADJUST
OUTPUT TO 4
mA
C
A
L
I
B
R
A
T
E
APPLY HIGH
CALIBRATION
UNITS
DIGITAL
ANALOG
Key Display 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.
CALI-
BRATE
OUTPUT WILL BE
AFFECTED! PROCEED?
NO
→ YES
ENTER
CALIBRATION
D-TO-A ADJUST
→ BENCH CALIB.
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