Manual

<2. About the EJX Multivariable Transmitter>
2-4
IM 01C25R01-01E
2.4.1 Conguration Procedure for Auto
Compensation Mode
The FlowNavigator is required to congure
auto compensation mode. Following shows the
procedures for HART protocol type.
Before starting the conguration procedure, have
on hand all data on the uid and the primary
devices.
(1) Have ready a power supply, a personal
computer, a HART modem, and the FSA120
Flow Conguration Software. (FlowNavigator)
(2) Install the mass ow conguration software on
the personal computer.
(3) Connect the EJX multivariable transmitter to the
power supply.
NOTE
Conguration can be done when the RTD is
not connected, but alarm number 03 will be
displayed on the indicator.
(4) Connect the HART modem to the personal
computer and connect its clips to the supply
terminals on the transmitter.
(5) Perform ow conguration.
(6) Execute ow simulation using the HART HHT
or the FlowNavigator to conrm the congured
ow parameters.
When executing the simulation, it is necessary
to connect the RTD or mock resistance (about
100Ω) to the transmitter.
Input the differential pressure, static pressure,
and temperature values and conrm that the
desired ow is obtained.
(7) Remove the HART modem from the transmitter.
(8) Turn off the power supply.
NOTE
(1) Refer to the following instruction manuals for
more detailed explanation.
Setting with the HART HHT:
IM01C25R02-01E.
Setting with the Fieldbus conguration tool:
IM01C25R03-01E.
Setting with the FlowNavigator:
IM01C25R51-01E.
(2) For the ow conguration in the eld after
installation, perform only steps 4 to 7.
2.5 Basic Mode (except Modbus
Communication Type)
In the case of Basic mode, ow operation and
density compensation are performed conventionally
with the ow factors manually input.
The ow rate is calculated using the constant ow
factor.
Density is compensated as follows according to the
selection of gas or liquid.
Gas: Compensation as ideal gas by
temperature and pressure.
Liquid: Compensation by temperature.
Select the operational expression according to the
uid type and unit category, as shown in Table 2.1.
Table 2.1 Flow Operational Expression for Basic Mode
T0201.ai
Flow unit Category Kfactor Flow
Fluid
type
Mass Flow
Normal · Standard
Volume Flow
Liquid
Normal · Standard
Volume Flow
Volume Flow
Mass Flow
Volume Flow
Gas
*1 Custom setting Parameter
Kfactor = /4×Nc×C/ 1–β
4
×ε×d
2
× 2×ρb
Kfactor = /4×Nc×C/ 1–β
4
×ε×d
2
× 2×ρb /ρnorm
Kfactor = /4×Nc×C/ 1–β
4
×ε×d
2
× 2/ρb
Kfactor = /4×Nc×C/ 1–β
4
×ε×d
2
× 2×ρb×1/K
Kfactor = /4×Nc×C/ 1–β
4
×ε×d
2
× 2×ρb×1/K /ρnorm
Kfactor = /4×Nc×C/ 1–β
4
×ε×d
2
× 2/(ρb×1/K)
Qm, Qv or Qv_norm
= Kfactor × ∆P×(1+Temp K1×(T–Tb))
Qm or Qv_norm
= Kfactor × ∆P×Tb/T×SP/SPb
Qv = Kfactor × ∆P×T/Tb×SPb/SP
*
1
*
1
*
1