PPC2 AF OPERATION AND MAINTENANCE MANUAL
© 1998 DH Instruments, Inc. Page 106
5.3 ADJUSTMENT OF BAROMETER
PURPOSE
To adjust the output of the on-board barometer (see Section 1.2.6).
PRINCIPLE
The on-board barometer output can be adjusted using PA and PM values in the same manner as for the
reference pressure transducers (see Section 5.4.1 Principle, PA/PM Coefficients)
OPERATION
To edit the values of PA and PM for the barometer, use 2Edit of 2Cal of 4Internal under the SPECIAL
menu. Then select 1Barometer. Pressing ENTER steps through displays of the calibration date
[YYMMDD] and PA/PM [Pa]. Edit these values as desired. Pressing ENTER after the last screen
activates the values.
To view the current atmospheric pressure measurement made by the barometer board use 7Atm under
4Internal of the SPECIAL menu (see Section 3.4.4.7).
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