User’s Manual Dwg No. 9R141-IR (1/2011)
Meriam’s M2110P Smart Pressure Gauge is a microprocessor-based pressure sensing
device. The various ranges available provide measurement of differential (dry/dry or wet/wet),
gauge, compound or absolute pressure. Three configurations are available: Battery, SetPoint,
and Current Loop models.
All models are programmable through the front keypad. The user’s program information is
stored in non-volatile memory and is retained when the power to the gauge is removed.
SetPoint and Current Loop models can also be configured through the RS-232 serial
communication connection.
The Battery models are powered by internal lithium batteries. This model has an LCD for
indication only; it does not support any outputs or RS-232 communications.
SetPoint and Current Loop models have outputs that can be used for control or
indicating/recording functions. Both models also have RS-232 communications capability. In
addition to configuring the gauge, the RS-232 port can be used to monitor and log the
measured pressure data and output status. It can also be used as part of a control system
with digital capabilities.
The SetPoint model provides two SPDT relay outputs with adjustable deadband. This
configuration provides normally open or normally closed contact operation. Switch SetPoints
can be set from –20% to +120% of the full scale pressure range. The SetPoint model is
powered by 120/240 VAC, or 24VDC.
The Current Loop model provides a 4 to 20 mA output three or four wire pressure transmitter
operation. LRV and URV are set through user-programmable registers from –20% to +120%
of the full scale pressure range. The output is capable of normal and reverse action. The
Current Loop model is powered by 24VDC only.
M2110P SMART PRESSURE GAUGE
USER’S MANUAL