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9. OPERATION
9.1 PRIMARY INPUT CALIBRATION
NOTE: In this section the word
Calibration
means to match the Instrument to the input device, so
that a specific signal from the input device is equated to a specific pressure and no other, (to
the capabilities of its input resolution).
Apply power to the cabinet and allow the system to stabilize for about 30 minutes. Allow the
transducer or other input device to come up to operating conditions.
9.1.1 CALIBRATION OF PRESSURE TRANSDUCERS EQUIPPED WITH
AN
INTERNAL SHUNT RESISTOR
Be sure that the full scale and low scale values (
PI.FSV
and
PI.LSV
) have been set to match the range
of the transducer and that the
SHUNT
function is
ON
and set to the correct percentage (80% for a
typical Dynisco transducer).
To calibrate the transducer to the instrument, press the FUNC key until
nonE
and
GROUP
show on
the display. Press the ▲ key until
2
shows in the upper display. Press the FUNC key and the lower
display changes to
ZERO.C
. The upper display shows
OFF
. Press the ▼ or ▲ keys until the upper
display changes to
ON
. Press the FUNC key to calibrate the zero value. The lower display changes
to
SPAN.C
. The upper display shows
OFF
. Press the ▼ or ▲ keys until the upper display changes to
ON
.
Press the FUNC key to calibrate the span value. When the legend
DSP.FL
appears in the lower
display, calibration is complete. Press RESET to return to the operating screen.
9.1.2 CALIBRATION OF AMPLIFIED PRESSURE TRANSMITTERS EQUIPPED WITH
AN
INTERNAL SHUNT RESISTOR
Be sure that the full scale and low scale values (
PI.FSV
and
PI.LSV
) have been set to match the range
of the transducer and that the
SHUNT
function is turned
OFF
.
To calibrate the transducer to the instrument, press the FUNC key until
nonE
and
GROUP
show on
the display. Press the ▲ key until
2
shows in the upper display. Press the FUNC key and the lower
display changes to
ZERO.C
. The upper display shows
OFF
. Press the ▼ or ▲ keys until the upper
display changes to
ON
. Press the FUNC key to calibrate the zero value. The lower display changes
to
SPAN.C
. The upper display shows
OFF
. Press the ▼ or ▲ keys until the upper display changes to
CLEAr. Press the FUNC key to calibrate the span value. When the legend
DSP.FL
appears in the
lower display, calibration is complete. Press RESET to return to the operating screen.
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