22
INW - PT2X Instruction Manual
Submergence
One-Point Calibration:
-- Computing Offset --
• Place sensor in the fl uid you are measuring at a precise known level.
• In
the
Ref
box for the fi rst point, enter this level or pressure.
• Click
fi rst
Measure
button.
• When readings have stabilized, click the Accept button in the pop-up box.
-- Applying Offset --
• Click
the
Apply
button to apply calculated offset.
• The calculated offset will be transferred to the offset fi eld near the top of the
window.
•
Click OK to save the value to the sensor!!!
Two-Point Calibration:
-- Compute First Calibration Point --
• Place sensor in the fl uid you are measuring at a precise known level.
• In
the
Ref
box for the fi rst point, enter this level or pressure.
• Click
fi rst
Measure
button.
• When readings have stabilized, click the Accept button in the pop-up box.
-- Compute Second Calibration Point --
• Place sensor in the fl uid you are measuring at a second precise known level.
• In
the
Ref
box for the second point, enter this level or pressure.
• Click
second
Measure
button.
• When readings have stabilized, click the Accept button in the pop-up box.
-- Applying Slope and Offset --
• Click
the
Apply
button to apply calculated values.
• The calculated slope and offset will be transferred to the fi elds near the top of
the window.
•
Click OK to save the value to the sensor!!!
-- Verifying Settings --
• Using the Real Time Monitor, take a few readings to verify it is reading as
expected.
IMPORTANT NOTE!
When taking readings on an
absolute
sensor, you will need to
SUBRACT
the current barometric pressure to get submergence. See the Barometric
Compensation Utility Application Note (9C0275) for information on how the
Barometric Utility can help automate this process.
