Yokogawa digitalYEWFLO (DY-FF) - Manual (Page 45)

<9. GENERAL SPECIFICATIONS>
9-1
IM 01F06F00-01EN
9. GENERAL SPECIFICATIONS
9.1 Standard Specifi cations
For items other than those described below, refer to GS 01F06A00-01EN.
Applicable Models:
All the models of DY and DYA with Fieldbus communication functions (Output code: F). These models conform
to the following EMC Conformity Standards:
EN 61326-1: 2006 Class A, Table 2 (For use in industrial locations), EN 61326-2-3: 2006
Caution: This instrument is a Class A product, and it is designed for use in the industrial environment. Please use this instrument
in the industrial environment only.
Note: Use the metal conduit for the remote cable.
 Performance Specifi cations
Mass Flow Accuracy using Arithmetic (AR) function block:
(when outer temperature sensor and outer pressure sensor are used)
Accuracy ± %: of Reading
Fluid
Mass Flow
Accuracy
(Note 1, Note 2)
Notes
Input for
Temperature,
Pressure
Reference input condition for Mass
Flow Accuracy
Flow computing
Saturated
steam
(Temperature
base)
±1.7%
(Flow velocity
35m/s or less)
±2.2%
(Flow velocity
35m/s to 80m/s)
Temperature
Temperature range +100 to +330°C
Temperature accuracy ±0.1%
Density computing by temperature
using standard steam table (IAPWS-
IF97: International Associaton for the
Properties of Water and Steam)
Saturated
steam
(Pressure
base)
Pressure
Pressure range 0.1MPa to fl ange rating
Pressure accuracy ±0.2%
Density computing by pressure using
standard steam table (IAPWS-IF97:
International Associaton for the
Properties of Water and Steam)
Superheated
steam
Temperature
and Pressure
Pressure condition:
Pressure range 0.1MPa to fl ange rating
Pressure accuracy ±0.2%
Temperature condition:
Temperature range +100 to + 450°C
Temperature accuracy ±0.1%
Density computing by temperature and
pressure using standard steam table
(IAPWS-IF97: International Associaton
for the Properties of Water and Steam)
General gas Not fi xed
Temperature
and Pressure
Accuracy is changed by fl uctuating
deviation factor K on temperature,
pressure condition Temperature, pressure compensation
computing using gas equation (Boyle-
Charles’s) at fi xed deviation factor K.
Liquid Not fi xed Temperature
Accuracy is changed by setting value for
temperature compensation factor Density computing by temperature
using equation API • JIS K 2249.
General gas
including
Natural gas
±1.1%
(Flow velocity
35m/s or less)
±1.6%
(Flow velocity
35m/s to 80m/s)
Temperature
and Pressure
For Natural gas accuracy condition is
Pressure condition:
Pressure range 0 to 12MPa
Pressure signal ±0.2%
Temperature condition:
Temperature range –10 to + 65°C
Temperature signal ±0.1%
General gas is computed using physical
properties supported by DIPPR database
(AIChE: American Institute of Chemical
Engineers)
For natural gas, AGA No.8 is
applied for temperature, pressure
compensation computing
For general gas and liquid, DIPPR
database is applied (AIChE: American
Institute of Chemical Engineers) for
Mass fl ow computing.
Density calculation parameters are
downloaded by FSA120 • FieldMate
FlowNavigator (Note 3)
Liquid Not fi xed Temperature
Computed using physical properties
supported by DIPPR database
(AIChE: American Institute of Chemical
Engineers)
Note 1) Mass Flow Accuracy for Steam and Natural gas is computed adding by Temperature and Pressure compensation based on
Volumetric Flow Accuracy.
Note 2) Refer to GS 01F06A00-01EN about mass and volmetric fl ow accuracy of AI1 output.
Note 3) Refer to GS 01C25R51-01EN.