Rezero; Calibration Flowchart (Pth - ABB STT04 Instruction Manual

CALIBRATION
B EN C H
C
A
L
I
B
R
A
T
E
D -T O -A
R E Z E RO
This section details the PTH pressure transmitter calibration functions
using an STT04 terminal. There are three types of calibration func-
tions:
Bench calibration.
•

Rezero.

•
D-to-A adjust.
•
NOTES:
1. When calibrating, a field device must be connected to the
STT04 terminal.
2. To change calibration or configuration parameters of a field
device that is connected to an IMFBS01 module, the transmitter
must be taken off-line. This is done at the INFI 90 OPEN console.
Refer to Figure D-2 for an overview of the calibration functions.
E N T E R L OW E N T E R H IG H
C A L IBR AT IO N C A L IBR ATIO N
P R ES S U R E P R ES S U R E
A R RO W
A D JU S T
K EY S
O U T PU T
TO 4 m A
C A L
M E TH O D
4 m A
C A L IBR ATIO N
E N T E R M ET ER
M E T ER VA L U E
VAL U E 4 .0 0 0
E N T RY
A R RO W
A D JU S T
K EY S
O U T PU T
TO 4 m A
C A L
M E TH O D
4 m A
C A L IBR ATIO N
E N T E R M ET ER
M E T ER VA L U E
VAL U E 4 .0 0 0
E N T RY
E Q UA LIZ E R E ZE RO
P R ES S U R E C O M P L E T E
Figure D-2. Calibration Flowchart (PTH)
PTH PRESSURE TRANSMITTER
A PP LY L O W A PP LY H IG H
C A L IBR ATIO N C A L IBR ATIO N
P R ES S U R E P R ES S U R E
A N A LO G
A D JU S T
O U T PU T
TO 20 m A
20 m A
C A L IBR ATIO N
E N T E R M ET ER
VAL U E 2 0.00 0
A D JU S T
O U T PU T
TO 20 m A
20 m A
C A L IBR ATIO N
E N T E R M ET ER
VAL U E 2 0.00 0
C A L IBR ATIO N
C O M P L E T E
D IG ITA L
T 01 3 40 A
CALIBRATION
D - 5