Meriam M1 – Series Digital Manometer - Manual (Page 4)

M1 Series - DM Instruction Manual 9R000034-IR
E.O. 6409 JAN 2008
www.meriam.com
Page 4 of 17
User Interface
Single Keypad Functions
ON/OFF (O) Key
The ON/OFF key, represented by the standard ON/OFF symbol,
turns the M1 ON or OFF (note: the ON/OFF key must be held until
the display turns on or off). Upon power on, the M1 will perform a
self test, display all segments for approximately 1-2 seconds, then
go into the normal pressure measure mode using the last pressure
units selected.
To view the calibrated accuracy and firmware revision, press and
hold the ON/OFF key for approximately 2 seconds upon power on.
The display will alternate between the calibrated accuracy and
firmware revision for as long as the ON/OFF key is held.
BACKLIGHT (B) Key
The BACKLIGHT key, represented by the standard light-bulb
symbol, turns the green display backlight on and off. The backlight
will remain on for approximately 20 seconds if not manually
turned off. To temporarily override the auto shut off feature, press
and hold the BACKLIGHT key for approximately 2 seconds (until
the backlight turns on-off-on).
FUNC (F) Key
This key selects the functional mode of the M1. Detailed
instructions are provided on the back of the unit and in the
subsequent sections.
UNIT (U) Key
This key selects the engineering unit of measure desired when the
M1 is in NORMAL or TEMP mode.