IM 01C25R01-01E
2-4
2. About Multivariable Transmitter
2.4.1 Configuration Procedure for Auto
Compensation Mode
The EJXMVTool is required to configure auto com-
pensation mode. Following shows the procedures for
HART protocol type.
Before starting the configuration procedure, have on
hand all data on the fluid and the primary devices.
(1) Have ready a power supply, a personal computer, a
HART modem, and the FSA210 mass flow con-
figuration software.
(2) Install the mass flow configuration software on the
personal computer.
(3) Connect the EJX910A to the power supply.
NOTE
Configuration can be done when the RTD is not
connected, but alarm number 03 will be dis-
played on the indicator.
(4) Connect the HART modem to the personal com-
puter and connect its clips to the supply terminals
on the EJX910A.
(5) Perform flow configuration.
(6) Execute flow simulation using the HART HHT or
the FSA210 to confirm the configured flow
parameters.
When executing the simulation, it is necessary to
connect the RTD or mock resistance (about 100
)
to the transmitter.
Input the differential pressure, static pressure, and
temperature values and confirm that the desired
flow is obtained.
(7) Remove the HART modem from the EJX910A.
(8) Turn off the power supply.
NOTE
(1) Refer to the following instruction manuals for
a more detailed explanation:
When setting with the HART HHT:
IM01C25R02-01E.
When setting with the FSA210 software:
IM01C25R50-01E.
(2) When doing flow configuration in the field,
after installation, perform only steps 4 - 7.
2.5 Basic Mode
In basic mode, flow operation and density compensa-
tion are performed conventionally, with the flow
factors being input manually.
The flow rate is calculated using the constant flow
factor.
Density compensation by phase
Gas: Compensation as ideal gas by temperature and
pressure.
Liquid: Compensation by temperature.
Select the operational expression according to the fluid
type and unit category, as shown in table 2.1.
Table 2.1 Flow Operational Expression for Basic Mode
T0201E.EPS
Flow unit Category
Kfactor
Qm or Qv or Qv_norm
*1
= Kfactor
P
(1+Temp K1
(T–Tb))
Flow
Fluid
type
Mass Flow
Normal · Standard
Volume Flow
Liquid
Normal · Standard
Volume Flow
Volume Flow
Mass Flow
Kfactor=
π
/4
Nc
C/ 1–
4
ε
d
2
2
b
Kfactor=
π
/4
Nc
C/ 1–
4
ε
d
2
2
b /
norm
Kfactor=
π
/4
Nc
C/ 1–
4
ε
d
2
2/
b
Kfactor=
π
/4
Nc
C/ 1–
4
ε
d
2
2
b
1/K
Kfactor=
π
/4
Nc
C/ 1–
4
ε
d
2
2
b
1/K
norm
Kfactor=
π
/4
Nc
C/ 1–
4
ε
d
2
2/(
b
1/K)
Qm or Qv norm
*1
= Kfactor
P
Tb/T
SP/SPb
Qv = Kfactor
P
T/Tb
SPb/SP
*1
Volume Flow
Gas
*1 Custom
setting
Parameter
