D/A Adjustment (Fine Tuning The Analog Loop); Analog Mode Calibration Tolerances - ABB Platinum standard Series Product Instruction

WBPEEUI110504A0
6. The milliammeter should read 4.000 mA plus or minus the
tolerance for the particular transmitter listed in Table 4-1.
7. Apply a pressure to the cell equal to the configured or
desired upper range value.
8. The milliammeter should read 20.000 mA plus or minus
the tolerance for the particular transmitter listed in Table 4-1.
9. If the output is not within the limits specified in Steps 6
and 8, calibrate the unit. To do so, press the CALIBRATE key
on the Type STT terminal and follow the procedure in the Type
STT Smart Transmitter Terminal Instruction.
10. Turn the - (negative) test terminal jumper screw clockwise
until tight.
Table 4-1. Analog Mode
Calibration Tolerances
Type
PTSDDC
PTSDDD
PTSDDB
PTSDDF
PTSDDG
PTSDGB
PTSDGC
PTSDGD
PTSDGF
PTSDGG
PTSDAD
PTSDAF
PTSDDA
PTSDDH
PTSDGH

D/A ADJUSTMENT (FINE TUNING THE ANALOG LOOP)

This procedure does not require removal of the covers from the
electronics housing. Compensation for slight inaccuracies in
the four to 20-milliampere current loop (or in receiving devices
such as recorders) is accomplished by accessing the calibra-
tion menu on the Type STT terminal while it is connected to
the target Type PTSD pressure transmitter. This procedure
does not adjust the zero or span of the transmitter and only
applies when first installing the system or if something in the
CALIBRATION
Tolerance
VDC (across
mA
precision resistor)
±0.013 ±0.003
±0.016 ±0.004
±0.032 ±0.008
CALIBRATION PROCEDURES
4 - 3