Vaisala PTU300 Guide de l'utilisateur Page 131

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Vue de la page 130
Chapter 6 ___________________________________________________Calibration and adjustment
VAISALA ______________________________________________________________________ 129
LC
Use the command LC to view current status of the linear offset and
offset/gain pressure corrections.
Example:
>lc
P1 linear adj. : ON
P1 1.reading : 950.000
P1 1.correction: 0.220
P1 2.reading : 1120.000
P1 2.correction: 0.150
MPCI
Use the command MPCI
- to activate or deactivate multipoint adjustment function
- to enter new multipoint corrections to the transmitter
- to edit existing multipoint corrections.
First deactivate the previous corrections by using the LCI OFF and/or
MPC1 OFF commands. Precalibration of the transmitter then gives the
required corrections.
When entering new multipoint corrections, always start at the low-
pressure end and then go up the pressure range. Key in the multipoint
corrections for each pressure transducer separately.
NOTE
The new multipoint corrections will always cancel the previous
corrections as well as the valid date of calibration of the transmitter.
Example:
>mpci
P1 multi adj. : OFF ? on
P1 1.reading : 0.000 ? 900
P1 1.correction: 0.000 ? 0.2
P1 2.reading : 0.000 ? 950
P1 2.correction: 0.000 ? 0.22
P1 3.reading : 0.000 ? 1000
P1 3.correction: 0.000 ? 0.27
P1 4.reading : 0.000 ? 1050
P1 4.correction: 0.000 ? 0.31
P1 5.reading : 0.000 ? 1100
P1 5.correction: 0.000 ? 0.32
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