IM 01C25R01-01E
2-1
2. About Multivariable Transmitter
2.
About the EJX910A Multivariable Transmitter
2.2 Initial Check and Installation
Procedure
Figure 2.2 is a flowchart showing the basic sequence
for installing and wiring an EJX910A.
Refer to the specified chapter for the details of each
procedure.
Flow configuration can be performed at the following
stages:
(1) On the bench, before installation.
(2) In the field, after installation.
This chapter gives an overview of the functions and the
installation of the EJX910A Multivariable transmitter.
For details on specific procedures, refer to the corre-
sponding chapter.
2.1 EJX910A Features
• Multi Sensing Function
The EJX910A multivariable transmitter has a Multi
Sensing function that enables a single transmitter to
measure differential pressure, static pressure, and external
temperature. Mass flow measurement instruments can
calculate and output the flow value using these three
measured variables. The EJXMVTool mass flow
configuration software is used to configure mass flow
calculation.
• Simultaneous Analog Output and Pulse
Output (HART protocol type)
The EJX910A has one analog output for the output of
single measured variables. With digital communica-
tions, all of these variables can be output simulta-
neously.
In addition to analog output, pulse output is provided
as a standard function of the EJX910A. It can perform
both types of output simultaneously. Pulse output is
used for total flow, flow rate, and alarm status.
DP sensor
SP sensor
Sensor Capsule
A/D
ROM
PC: Flow configuration
Electronics module
RTD Input
Pressure Input
4 to 20 mA output
for selected PV.
RAM
/Differential Pressure
/Static Pressure
/Process Temperature
/Calculated Mass Flow
ROM
MPU
/Calculate Mass Flow
/System control
D/A
Digital I/O
Pulse
output
Pulse output
or Status output.
Silicon Resonant
sensor
F0201E.EPS
Figure 2.1 Block Diagram of EJX910A System (HART protocol type)
