Analog Mode Calibration; Bench Calibration - ABB Platinum standard Series Product Instruction

CALIBRATION

Analog Mode Calibration

CALIBRATION PROCEDURES
4 - 2
Pressure source with an accuracy at least four times
•
greater than that of the transmitter (Tables 1-5, 1-6, and
1-7).
Type STT Smart Transmitter Terminal.
•
Use these procedures for validation of transmitter calibration
before installation, after an inadvertent overpressure condi-
tion, or after the replacement of components. If the checkout
indicates an incorrect calibration, continue with the procedure
to calibrate the transmitter.

BENCH CALIBRATION

1. Mount and connect the transmitter in a calibration setup
such as the one shown in Figure 4-1.
NOTE: Turn the - (negative) test terminal jumper screw ½-turn
counterclockwise.
C A S E
G R O U N D IN G
D C P OW E R
T E R M IN A L
S U P P LY
– +
Ω
25 0
± 0.01 %
0.5 W
M IN
S TT
JU M P E R
S C R E W
Figure 4-1. Calibration Setup (Typical)
2. Orient the transmitter in the same position as the final
installation.
3. Allow the transmitter to stabilize for 15 minutes after
power up.
4. Connect the pressure source to the + (high pressure) side
of the cell.
5. Apply a pressure to the cell equal to the configured or
desired lower range value.
+ +
P W R /
O U T P U T
–
T E S T
–
T B 1
+
–
A M M E T E R
T 0 2 6 1 0 A
WBPEEUI110504A0