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Reference Manual
IP2013, Rev BA
February 2012
Mobrey MSP422
4-4
PROGRAMMING
THE MSP422
Refer the Integral Display menu on a card tucked between the housing and
body, and in Figure 4-1 on page 4-3.
Display Units The display units are indicated by the position of the decimal point in the
displayed PV value:
Units Display
m 8.000
ft. 26.24
in. 314.9
Default values are as follows:
MSP422-B28: m
MSP422-N28: ft.
NOTE:
See Figure 4-1 on page 4-3 for a map of the programming menu structure
showing how to access all the menu options and return to the PV display.
To change the display units:
a) Start from the PV display (see the note above.)
b) Hold down the blue button
for 10 seconds, but do not release it yet.
c) The display units will then change according to the following sequence:
MSP422-B28: Metres to Feet, Feet to Inches, and Inches to Metres.
MSP422-N28: Feet to Inches, Inches to Metres, and Metres to Feet.
d) Continue to hold down the blue button
to change to the next display
unit in the above sequence after every three seconds.
e) Confirm the display units by releasing the blue button
.
The same units must be used when programming in the bottom reference and
the 4 and 20 mA points.
The 4–20 mA output may be set to operate over all or just a part of the total
measuring range. There is no limit on the minimum span of the current output,
although a span below 4 in. (100 mm) is not recommended.
The 4 mA level may be set above or below the 20 mA level to suit the
monitoring or control equipment.
NOTE:
The MSP422 measures and calculates in metres. The display units are
derived as a last operation using a pre-programmed conversion factor.