Manual

<10. General Specications>
10-4
IM 01C25R01-01E
 Mass Flow Calculation
(For Measurement function code B of HART and
FOUNDATION Fieldbus protocol types)
 Auto Compensation Mode (FlowNavigator
is required for conguration)
Conguration of the uid physical properties and
primary device for the EJX910A/EJX930A can be
performed using a dialog window of FlowNavigator.
All ow factors for mass ow calculation are
dynamically compensated to an optimum value.
In Auto mode, mass ow can be measured with
high accuracy.
The ow factors automatically compensated are
discharge coefcient, diameter of primary device,
upstream internal pipe diameter, gas expansion
factor, density, and viscosity.
FlowNavigator: (Refer to GS 01C25R51-01E)
FSA120 software package is used to perform mass
ow conguration for the EJX910A/EJX930A.
This software can also read and write the general
transmitter parameters. Conguration of the uid
physical properties and the primary device of the
EJX910A/EJX930A can be done by means of a
dialog menu.
FlowNavigator runs on a notebook PC equipped
with a communication interface for HART/
F
OUNDATION Fieldbus.
 Basic Flow Calculation Mode
Flow operation and density compensation are
performed conventionally, with the ow factors
manually input.
The operational expression is switched by the uid
type and the unit setting.
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.
Flow operational expression: refer to Table 2.1
Symbol: refer to Table 2.2
Flow unit categories: refer to Table 2.3, 2.4, 2.5
 Normal Operating Condition:
(Selected features may affect limits.)
Ambient Temperature Limits
–40 to 85°C (–40 to 185°F)
–30 to 80°C (–22 to 176°F) with LCD display
Process Temperature Limits
–40 to 120°C (–40 to 248°F)
Ambient Humidity Limits
0 to 100% RH
Working Pressure Limits (Silicone oil)
Maximum Pressure Limits
EJX910A
L Capsule 16 MPa (2300 psi)
M and H Capsule 25 MPa (3600 psi)
EJX930A
M and H Capsule 32 MPa (4500 psi)
Minimum Pressure Limit
See graph below
Atmospheric
pressure
-40
(-40)
0
(32)
40
(104)
80
(176)
120
(248)
1(0.14)
2.7(0.38)
10(1.4)
(psi abs)
100(14.5)
Process temperature °C (°F)
Working
pressure
kPa abs
Applicable range
F1002.ai
Figure 10.1 Working Pressure and Process Temperature