Meriam M1 – Series Digital Manometer - Manual (Page 14)

M1 Series - DM Instruction Manual 9R000034-IR
E.O. 6409 JAN 2008
www.meriam.com
Page 14 of 17
Certification/Safety/Warnings
The following defines the certification and area classification of
the M1 Series pressure instrument.
Note the following WARNINGS and requirements:
•
User must use bulkhead fitting hex surface when attaching
user’s 1/8” NPT fitting. When making mechanical
connections DO NOT apply torque to bulkhead fitting that
causes the fitting to turn or twist with respect to plastic
enclosure. To do so, will damage the product and void the
warranty.
Changing the Batteries
The M1 is powered by three, 1.5 volt AA size batteries. When the
output of the batteries drop below a normal level, the display will
activate the “BAT” icon, indicating a low battery condition. A low
battery condition may affect performance and therefore, the unit
should not be used to measure pressure. All three batteries should
be replaced.
To replace the battery locate the battery compartment in the bottom
rear of the M1, as shown below.