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Reference Manual
IP2013, Rev BA
February 2012
Mobrey MSP422
4-10
NOTE:
See Figure 4-1 on page 4-3 for a map of the programming menu structure and
how to access all the menu options.
To change the 20 mA level:
a) If entering the menu system from the PV display, press the green button
repeatedly until the “S-20” menu option is indicated (see above note.)
b) Ensure the target is the 20 mA level and, with the display indicating that
level, press the blue button
.
c) The display indicates the present 20 mA level setting, not the new level
reading. If this value is correct, press the red button
and then the green
button to get to the next menu option.
d) Press the blue button
to start editing. The display flashes alternately
“20” and the new level reading.
e) Press the blue button
to confirm the new level reading is the new
20 mA level.
f) If the new 20 mA level is correct, press the red button
to save. The
display changes to the next menu option.
g) If the new 20 mA level is incorrect, press the blue button
to exit to the
menu. The menu option “S-20” re-appears; re-start at step (b) or press
for the next menu option.
Learn About Echoes
From False Targets
The MSP422 has an easy-to-use “Lrn” (Learn) routine that allows the
instrument to learn up to two false echoes, which can then be ignored in
future operations.
If the application is simple and there are no false echoes, press the green
button
to exit the integral display menu and return the instrument to
indicating the level reading on the display.
If an echo other than the true liquid surface echo is detected and an incorrect
level reading is indicated, the instrument can learn to ignore this false echo.
The “Lrn” routine may be used at any time, either during or after setting-up or
if a problem occurs later.
NOTE:
See Figure 4-1 on page 4-3 for a map of the programming menu structure and
how to access all the menu options.
To store a false target echo:
a) If entering the menu system from the PV display, press the green button
repeatedly until the “Lrn” menu option is indicated (see above note.)
b) Press the blue button
to enter the “Lrn” menu. The display indicates
“LrnX” where “X” (0, 1 or 2) is the number of stored false target echoes.
c) To exit to the menu at this stage, press the red button
and then the
green button to get to the next menu option.
d) To store a new false echo, hold the blue button down
for five seconds.
e) The display now alternately flashes “Lrn” and the false target position.
After four seconds, the false echo target position is stored and the display
re-indicates “LrnX” alternating with the distance to the stored echo.