Meriam M1 – Series Pressure Calibrator - Manual (Page 17)

M1 Series – PC Instruction Manual 9R000035-IR
E.O. 6409 JAN 2008
www.meriam.com
Page 17 of 18
User Connections
Connection: 1/8” female NPT, 316SS. The pressure connections (P1 and P2)
are marked on top of the keypad as shown on page 1.
“D” or Differential models have 2 used pressure ports. P1 is the high pressure
connection and P2 is the low pressure connection (as shown below).
“G” Gauge and “A” Absolute models have one used pressure port, P1. P2 is
used to vent enclosure/sensor to atmosphere (as shown above).
WARNING Connection to the incorrect pressure port may cause damage
to the pressure sensor. Once this sort of damage occurs, the unit must be
returned to the factory for sensor replacement.
WARNING
User must use bulkhead fitting hex surface when attaching
user’s 1/8” NPT fitting. No torque can be applied to bulkhead fitting with
respect to plastic enclosure.
Barometric Pressure
or
Atmospheric Pressure
Absolute
Pressure
Absolute Zero
A
B
Gauge
Vacuum
+
-
Differential