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Reference Manual
IP2048/RM, Rev AA
Section 2: Transmitter Overview
February 2015
2.3 Components of the transmitter
The transmitter has a housing containing advanced electronics to generate ultrasonic pulses,
process the resultant signals, and provide a 4–20mA and HART output.
Removing the lid reveals terminals to connect a cable (not supplied) for the signal output and
an external power supply. An LCD inside the enclosure displays the selected measurement.
Programming is achieved using integral buttons or by remote communication using HART.
Figure 2-2. Features of the MSP400RH and MSP900GH transmitters
A. Electronics Housing C. Transmitter Face
B. 2-in. Mounting Thread D. M20 Conduit Threads
2.4 System architecture
The Mobrey MSP400RH and MSP900GH are two-wire, 24 Vdc loop-powered transmitters and
can be connected to a direct current (dc) power source using two-core, shielded cable.
The output can be a 4–20 mA analog signal and a digital HART signal.
Note
It is possible to use the multi-drop function with the HART protocol. In this case,
communication is restricted to digital since the current is fixed to 4 mA.
Each transmitter can be configured locally using the membrane-buttons which are revealed
after removing the housing cover. The transmitters can be configured remotely by using a
Mobrey MCU900 Series control unit
A comprehensive specification for the Mobrey MSP400RH and MSP900GH is in the section
“Specifications” on page 63.
D
C
B
A
Supplied with:
1 x Cable Gland
1 x Blanking Plug
D