Meriam M202 Precision Absolute Manometer - Manual (Page 6)

M2 Series Instruction Manual 9R68-A
Mar, 2008
www.meriam.com
page 6 of 36
Keystroke Display
1. Press ON/OF button. The display briefly shows
the header name and full
scale range of the unit in the
last engineering units
selected. The manometer
then goes into the Measure
Mode where the applied
pressure and engineering
unit of measure are
displayed.
2. Connect the 355 to a
vacuum source capable
of a vacuum of 100
microns absolute
pressure or less.
3. Pull a full vacuum. Display should read close to
zero. (See note on next
page)
4. Press MIN/MAX and
TARE keys at the same
time. (See figure 1
below.)
Top line of display reads
“ZEROING SOURCE:”
Bottom line of display reads
“REF TO ABS ZERO”
5. Press the PRGM key. Top line of display reads
“ZERO IN PROGRESS”
while bottom line counts
down from 9. Zeroing is
complete when unit returns
to Measure Mode.
Figure 1
Tare