Vaisala BAROCAP PTB330 - Page 117

Chapter 6 ___________________________________________________Calibration and Adjustment
VAISALA______________________________________________________________________ 115
After disabling the previous adjustments, calibrate the PTB330 against
your pressure reference. Make a note of the pressure reading of each
PTB330 barometer module separately (quantities P
1
, P
2
, and P
3
). Then
use the display/keypad to enter and activate the new multipoint/linear
adjustment factors:
1. Press the
ADJ button located on the motherboard in the upper
corner on the left-hand side to open the
ADJUST PTB330
menu.
2. Select
P1 adjustments, press the right arrow button.
3. Select
Multipoint/Linear adjustment, press the SET button.
4. Select an existing adjustment point or
Add adjustment point
and press the
SET button to enter your new values. If asked,
select
MODIFY to replace the old values with your new ones.
5. Enter the P
1
value of the PTB330 at the Reading prompt using
the up/down arrow buttons. Press the
OK button.
6. Enter the corresponding pressure reference value to the
Reference prompt using the up/down arrow buttons. Press the
OK button.
7. Repeat steps 4…6 until you have entered all the pressure points
you have.
8. To remove any excess old adjustment points, press
SET and
select
REMOVE on each of them.
9. Once you have finished, press the
OK button. Press the YES
button to activate the adjustment you have configured.
10. Press the left arrow button to go back to the
ADJUST PTB330
menu and repeat steps 2…9 for each barometer module you are
adjusting.
11. If necessary, go to the Adjustment Information submenu and set
a new calibration date and note.
12. Exit the adjustment mode by pressing
EXIT.