Meriam M2110F SMART FLOW GAUGE - Manual (Page 30)

30
14 INSTALLATION
Differential pressure sensors have two pressure connections on the back of the gauge. The diagram below shows the
correct connections to obtain the desired type of pressure measurement.
The SetPoint model
utilizes the multi-
function terminal strip
shown at the left. This
terminal strip has a
NEMA 1 rating. The
SPDT relays are not
powered internally by the
gauge. Jumpers from the
24Vdc, 110Vac or
220Vac power sources
can be used if required.
The Current Loop
model uses a cannon
connector that is
designed to meet NEMA
4X requirements. The
charts at the left show the
terminal and wiring
arrangement. See wiring
schematics for the three
and four wire, 4 to 20
mA loops shown.
Note: The Smart Gauge comes with 1/8” FNPT pressure port(s). Gauge and Absolute models
only use one pressure port. The unused port vents the enclosure/sensor to atmosphere. DO NOT
REMOVE THE SINTERED PLUG (ALLEN HEAD FITTING). The Smart Gauge should be
panel-mounted or held firmly in one hand while a small wrench is used to tighten the 1/8”
MNPT pipe thread. Do not tighten the fitting without using a wrench on the manifold.