Meriam M202 Precision Absolute Manometer - Manual (Page 7)

M2 Series Instruction Manual 9R68-A
Mar, 2008
www.meriam.com
page 7 of 36
2. To zero the manometer using Factory Zero, start with the
unit turn ON and in Measure Mode and use the following
keystroke sequence:
Keystroke Display
1. Press MIN/MAX and
TARE keys at the
same time. (See
figure 1 above.) Top line of display reads
“ZEROING SOURCE:”
Bottom line of display
reads “REF TO ABS
ZERO”
2. Press or arrow
key until desired zero
function is shown on
the bottom line.
Bottom line of display
reads “FACTORY ZERO”
3. Press the PRGM key.
Zeroing is complete when
unit returns to Measure
Mode.
NOTE: The M202 can be zeroed only if the new applied zero
is within ± 1% FS of the original factory calibration zero. If
outside this limit a “ZERO RANGE ERROR” message
appears and the manometer will not zero. Contact the factory
for support in this case.
3. To zero the manometer using User-Adjusted Zero, start
with the unit turn ON and in Measure Mode and use the
following keystroke sequence: