Meriam M1 – Series Digital Manometer - Manual (Page 6)

M1 Series - DM Instruction Manual 9R000034-IR
E.O. 6409 JAN 2008
www.meriam.com
Page 6 of 17
Liquid Crystal Display (LCD)
The LCD displays the:
• Pressure or Temperature measurement via large digits,
• Pressure measurement via bar graph, and
• Pressure or Temperature engineering units via icons.
A low battery warning (the BAT icon) is displayed when the
batteries require replacement. Approximately 2 hours of run time
is available immediately following a low battery warning.
The bar graph at the bottom of the display always shows a reading
of the currently applied pressure as a percent of the full scale of the
M1.
The LCD incorporates two backlights:
• a green backlight which is user activated via the BACKLIGHT
key, and
• a red backlight which is automatically activated during an
error/over-range condition
During an error or over-range condition, the red backlight will
“over-ride” the green backlight. However, once the error or over-
range condition is corrected, the green backlight will be restored to
its previous state (if the backlight auto-off timer did not expire).
The backlight should be turned off when not needed to conserve
battery power. The backlight feature will be reduced when the M1
is in low battery mode.