Head correction calculator – Crystal FastCalXP Calibration Software User Manual
Page 34
Settings and Options
32
FastCalXP Operation Manual
HEAD CORRECTION CALCULATOR
The Head Correction Calculator is accessed via a button under the Calibration Settings tab.
The calculator uses
Fluid density
,
Gravity
and
Height change
to calculate a correction that is added to the pressure measured by the reference.
Four standard fl uid densities, for
Isopropyl Alcohol at 25°C
,
Pure Water at 4°C
,
Pure Water at 20°C
and
Air at 15°C
and sea level, can be applied using the buttons
in the Head Correction box.
The local gravity can be estimated using the local
Latitude
and the altitude above
Mean sea level
.
Enter these values and click on the
Calculate Gravity button
.
The calculated gravity will automatically be entered into the
Gravity
fi eld in the Head Correction box.
When the appropriate parameters are entered, click on the
Calculate Head Correction button
to display the calculated Head Correction. Click
OK
to insert the
correction into the head correction box in the Calibration Settings.