IM 1F6A0-01E
2-10
2. GENERAL DESCRIPTION
■
OPTION MULTI-VARIABLE (BUILD IN TEMPERATURE SENSOR) TYPE (/MV)(*1)
This option is the same as standard specification except the following items.
T-09
Size
Function
Fluid
Accuracy
(*2)
Temperature Response
(50% response)
Mass Flow Calculation
Method
Output
Display
Remote Type
Mass
Flow
Temperature
Analog Output
Pulse Output
Alarm Output
StatusOutput
Upper
Lower
Standard Type
15mm to 100mm
15mm to 300mm
Liquid, Gas
Saturated Steam
Superheat Steam
–29 to 260 C
Only for Flow Rate
Only for Flow Rate
Only for Standard
Flow Switch
Only for Flow Rate
Only for Total Rate
Liquid, Gas
Saturated Steam
Superheat Steam
Only for indication
and output
Mass Flow calculation.
(Volumetric flowrate at Standard condition for GAS)
Multi-variable Type
Saturated Steam
Superheat Steam
Gas
Liquid
–29 to 260
ⴗ
C
100 to 260
ⴗ
C
100 to 260
ⴗ
C
–29 to 260
ⴗ
C
–29 to 260
ⴗ
C
Select from Flow rate or temperature (*7)
Only for Flow rate
Standard Alarm
Error of thermometer etc.
Only for Flow Switch
Select from Flow rate (%,Engineering Unit) or Temperature (%) (*8)
Select from Total Rate or temperature ( C, F) (*9)
Flow Converter : Select DYA-
ⵧⵧⵧ
/MV
Signal Cable : Select DYC-
ⵧⵧⵧ
/MV (*10)
60sec
(Churning Underwater)
Wafer Type
Flange Type
25mm to 100mm
25mm to 200mm
±
0.5%
OF RATE
±
1%
OF RATE
±
1%
(Less than 100
ⴗ
C)
±
1%
OF RATE
(100
ⴗ
C or more)
±
0.5
ⴗ
C
(Less than 100
ⴗ
C)
±
0.5% OF RATE
(100
ⴗ
C or more)
Density Calculation
(*3)
Density Calculation
(Constant pressure is
assumed)
(*4)
Temp.-Pressure
Correction
(Constant pressure is
assumed)
(*5)
Density change
Calculation
(*6)
Refer to Table 3
(*1)
When /MV is choosen, /HT, /LT is not available.
(*2)
Measurement temperature is changed by the heat-insullation method of piping and piping method. Refer to “REMARKS ON INSTALLATION”
about heat-insullation. In case of the Mass Flow measurement of saturated steam and superheat steam, it is necessary to make a heat-
insullation.
(*3)
Mass Flow rate is calculated from density values by temperature measument using saturated steam table.
(*4)
Mass Flow rate is calculated from density values to temperature measured by using steam table. In order to measure superheated steam, it
is necessary to make constant pressure value. A pressure values which is indicated by order sheet is used.
(*5)
In order to measure gas, Pressure-Temperature correction is carried out. It is necessary to make canstant pressure value.
A pressure values at operational condition, temperature and pressure value at standard condition which is indicated by order sheet is used.
(*6)
In order to measure mass flowrate of liquid application, the density at normal condition is used, and if fluid temperature deviates from normal
temperture density values is calculated by 2 dimensional equation. In this case, temperature coefficient should be prepared by user’s side.
(*7)
Default setting is Flow rate. It is necessary to change the parameter of output in case of setting temperature output.
(*8)
In case of indicating the temperature %, the display indicate not only “%” but also “t” . ( “t” is the means of temperature)
(*9)
Default setting is “temperature” but “Total “ is setup when ordering the Total Rate.
(*10)
In case of Multi valiable(/MV), it is necessary to setup the parameter of Cable Length.
Table 2.4.1
Datailed Accuracy (for Table 2.5.3 Range of Guaranteed Accuracy)
Fluid
Nominal Size
Accuracy
±
2.0% of Reading (20000
Re
D
10
3
)
±
1.5% of Reading (D
10
3
Re)
±
2.0% of Reading (40000
Re)
±
2.0% of Reading (Velocity 35 m/s or less)
±
2.5% of Reading (Velocity 35 m/s up to 80 m/s)
Liquid
25 mm up to
100 mm
150 mm,
200 mm
25 mm up to
200 mm
D: Inner diameter of YEWFLO (mm)
Re: Reynolds number (non unit)
Note: In case of analog output, add up
±
0.1% of full scale to
the values mentioned above.
T09-2.EPS
Gas,
Steam
