General Specifications; Standard Specifications - YOKOGAWA digitalYEWFLO Series User Manual

9.

GENERAL SPECIFICATIONS

9.1 Standard Specifications
For items other than those described below, read GS 01F06A00-01EN.
EMC Conformity Standards:
EN 61326-1 Class A, Table 2 (For use in industrial locations), EN 61326-2-3, EN61326-2-5
• Performance Specification during immunity test
Flowrate output: Output fluctuation within measurement accuracy
Temperature output: Output fluctuation within ±1.0 °C
Note1: 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.
Note2: Use the metal conduit for the remote cable.
 Performance Specifications
Mass Flow Accuracy using Arithmetic (AR) function block:
(when outer temperature sensor and outer pressure sensor are used)
Accuracy ± %: of Reading
Mass Flow
Fluid Accuracy
(Note 1, Note 2)
Saturated
steam
(Temperature
base)
Saturated ±1.7%
steam (Flow velocity
(Pressure 35m/s or less)
base) ±2.2%
(Flow velocity
35m/s to 80m/s)
Superheated
steam
General gas Not fixed
Liquid Not fixed
±1.1%
(Flow velocity
General gas
35m/s or less)
including
±1.6%
Natural gas
(Flow velocity
35m/s to 80m/s)
Liquid Not fixed
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) Read GS 01F06A00-01EN about mass and volmetric flow accuracy of AI1 output.
Note 3) Read GS 01C25R51-01EN.
Note 4) The accuracy of saturated steam mass flow rate is on the condition of 100% dryness.
Input for
Reference input condition for Mass
Temperature,
Flow Accuracy
Pressure
Temperature range +100 to +330°C
Temperature
Temperature accuracy ±0.1%
Pressure range 0.1MPa to flange rating
Pressure
Pressure accuracy ±0.2%
Pressure condition:
Pressure range 0.1MPa to flange rating
Temperature Pressure accuracy ±0.2%
and Pressure Temperature condition:
Temperature range +100 to + 450°C
Temperature accuracy ±0.1%
Accuracy is changed by fluctuating
Temperature
deviation factor K on temperature,
and Pressure
pressure condition
Accuracy is changed by setting value for
Temperature
temperature compensation factor
For Natural gas accuracy condition is
Pressure condition:
Pressure range 0 to 12MPa
Pressure signal ±0.2%
Temperature condition:
Temperature Temperature range –10 to + 65°C
and Pressure Temperature signal ±0.1%
General gas is computed using physical
properties supported by DIPPR database
(AIChE: American Institute of Chemical
Engineers)
Computed using physical properties
supported by DIPPR database
Temperature
(AIChE: American Institute of Chemical
Engineers)
<9. GENERAL SPECIFICATIONS>
Notes
Density computing by temperature
using standard steam table (IAPWS-
IF97: International Associaton for the
Properties of Water and Steam)
Density computing by pressure using
standard steam table (IAPWS-IF97:
International Associaton for the
Properties of Water and Steam)
Density computing by temperature and
pressure using standard steam table
(IAPWS-IF97: International Associaton
for the Properties of Water and Steam)
Temperature, pressure compensation
computing using gas equation (Boyle-
Charles's) at fixed deviation factor K.
Density computing by temperature
using equation API • JIS K 2249.
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 flow computing.
Density calculation parameters are
downloaded by FSA120 • FieldMate
FlowNavigator (Note 3)
9-1
Flow computing
IM 01F06F00-01EN