Vaisala BAROCAP PTB330 Guide de l'utilisateur Page 112

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User's Guide ______________________________________________________________________
110 _________________________________________________________________ M210855EN-C
Adjustments Using Display/Keypad
Use the display/keypad to view the active multipoint/linear
adjustments.
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. If the corresponding
adjustment is already enabled, it is marked with a check mark.
4. If the adjustment is enabled, press the SHOW button to see the
active adjustment values. Press OK to leave the adjustment active
or DISABLE to disable the adjustment (confirm by pressing
YES).
5. Press the left arrow key to go back to the ADJUST PTB330 menu.
6. Exit the adjustment mode by pressing EXIT.
To measure new adjustment values and perform the actual adjustment,
first disable the corresponding adjustment on each barometer module
you are going to adjust (see the procedure above). If you are going to
perform a multipoint adjustment, disable also the linear adjustments. If
you are going to do only a linear adjustment, leave the multipoint
adjustments untouched.
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.
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