Calibrate Pressure Instrument; Calibrate Transducer To A Known Pressure; Figure 6-3. Pressure Calibration Screen - 3 Of 3 - Emerson Vilter PLC Operation Manual

Section 6 • Instrument Calibration

CALIBRATE PRESSURE INSTRUMENT

To calibrate a pressure instrument, proceed with the fol-
lowing steps:
1. Select the units that the transducer is calibrated
in. For example, for a transducer calibrated 0-200
PSIA, the transducer units selected shall be 'PSIA.'
For a transducer calibrated -30inHg to 30PSIG, the
transducer units selected shall be "inHg."
2. Select the units that the pressure will be displayed
in on the HMI.
3. Enter the raw mA range (typically 4-20mA)
4. Enter the Span of the instrument. For a 0-200 PSIA
transducer, Enter "0" for XDCR Min and "200" for
XDCR Max.
Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP

Figure 6-3. Pressure Calibration Screen - 3 of 3

CALIBRATE TRANSDUCER TO A KNOWN PRESSURE

There are two options when calibrating a transducer to
a known pressure.
Differential pressures does not require calibration,
but the differential pressure display units can be
selected.
OPTION 1
1. Open the pressure transducer to a known pressure.
2. Adjust the Offset value until the "Displayed" value
is equal to the known pressure.
OPTION 2
1. Open the pressure transducer to a known pressure.
2. Enter the known pressure (in transducer units) into
"Target Value." The controller will calculate an off-
set based on the known pressure that was entered.
NOTE
6 – 3