Panametrics HydroProII, User Manual

Page: 38 / 104

Chapter 2. Operation
26 HygroPro
II
User's Manual
2.3.2 Entering Sensor Calibration Data
Calibration data for the AlOx moisture sensor and the optional
pressure sensor are located under the Settings option on the Main
Menu.
These settings are protected by the User Passcode – the default value
is 111111 and can be changed as shown below.
Enter your User password and press Enter. Use the arrow keys to scroll
to Calibration. Press Enter. Select Hygro Curve and press Enter.
This will bring you to the No. of HC points screen. Default number of
calibration points is 14 (standard HygroRTE calibration), maximum
number is 18 (extended calibration). The HC table that appears on
pressing Enter will display as many points from point 1 as you select.
Select point 1 (or any point you wish to edit) and press Enter. It is
advisable to start at the top and check every single calibration point in
order to ensure the probe calibration curve has been entered
properly.
The next screen shows the FH (independent
variable) and Dew Point (dependent variable)
values for that calibration point.
As shown on the left, the first calibration point
typically has a DP setting of -110°C while the last
(14
th
) point has a DP setting of +20°C. Use the arrow
keys to choose either value, enter a desired value
and press Enter.
Repeat the previous two steps until all of your Hygro
Curve data points (14 typical, 18 extended) have
been entered.
To save the data you have to press Enter. If any
numerical value has changed an intermediate
screen showing “Save Successful” appears.
If nothing has been changed you will go back to the
Hygro Curve table screen.
If you have an optional pressure sensor, you can
also adjust the 2-point pressure calibration curve by
choosing the Pressure Curve option and pressing
Enter.