Vaisala PTU200 - Manual (Page 40)

U SER ' S G UIDE _______________________________________________________________________
36 ___________________________________________________________________ M210195 EN -A
MPCI Entering multipoint pressure corrections
MPCI n
where:
n = number of the pressure transducer (1 or 2)
The MPCI command is used to enter new multipoint corrections to the
transmitter. Note that the user must give the multipoint corrections to
each pressure transducer separately.
Turn the switch SW4 to write ENABLE position (ON) to be able to
enter new linear and multipoint corrections to the transmitter.
Deactivate the previous corrections first using the LC OFF and/or
MPC 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.
NOTE The new multipoint corrections will always cancel the previous
corrections as well as the valid date of calibration of the transmitter
(see CALD command).
Use ESC to abort without executing the command. The new
multipoint corrections are activated with the MPC ON command.
In the following, an example of performing a multipoint adjustment
for pressure transducer P1 is given.
>lc off
Linear adj.
: OFF
>mpc off
Multipoint adj:
OFF
>mpci 1
P1 1. reading ? 499.72
correction ? -0.07
P1 2. reading ? 599.20
correction ? -0.08
P1 3. reading ? 698.71
correction ? -0.01
P1 4. reading ? 801.12
correction ? -0.01
P1 5. reading ? 900.61