Option Multi-Variable (Build In Temperature Sensor) Type (/Mv)(*1) - YOKOGAWA DY025 User Manual

9.4.2 Option Multi-Variable (Build in Temperature Sensor) Type (/MV)(*1)

This option is the same as standard specification except the following items.
Size
Function
Fluid
Temperature Range
Accuracy Mass
(*2) Flow
Temperature
Temperature Response
(50% response)
Mass Flow Calculation
Method
Output Analog Output
Pulse Output
Alarm Output
StatusOutput
Display Upper
Lower
Remote Type
(*1) When /MV is chosen, /HT, /LT is not available.
(*2) Measurement temperature is changed by the heat-insulation method of piping and piping method. Refer to 2.2 Piping, about heat-insulation
(P.2-3). In case of the Mass Flow measurement of saturated steam and superheat steam, it is necessary to make a heat-insulation.
(*3) Mass Flow rate is calculated from density values by temperature measurement 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 constant 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
temperature 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) For the Remote Type (DY***-N/MV), be sure to set the parameter of cable length for DYA, Remote Type converter.
Wafer Type
Flange Type
Only for indication
and output
Liquid, Gas
Saturated Steam
Saturated Steam
Superheat Steam
–29 to 250 C 100 to 250 C
±0.5%
OF RATE
Density Calculation
(*3)
Select from Flow rate or temperature (*7)
Standard Alarm Error of thermometer etc.
Select from Flow rate (%,Engineering Unit) or Temperature (%) (*8)
Select from Total Rate or temperature ( C, F) (*9)
Signal Cable : Select DYC-
Multi-variable Type
25mm to 100mm
25mm to 200mm
Mass Flow calculation.
(Volumetric flowrate at Standard condition for GAS)
Superheat Steam
100 to 250 C –29 to 250 C
Refer to "Detailed Accuracy" (See P.9-15)
±1%
OF RATE (Less than 100 C)
60sec
(Churning Underwater)
Density Calculation
(Constant pressure is
(Constant pressure is
assumed)
(*4)
Only for Flow rate
Only for Flow Switch
Flow Converter : Select DYA-
/MV (*10)
9-10
9. GENERAL DESCRIPTION
Gas Liquid
–29 to 250 C
±1 C ±0.5 C
(Less than 100 C)
±1% OF RATE ±0.5% OF RATE
(100 C or more) (100 C or more)
Temp.-Pressure
Density change
Correction
Calculation
(*6)
assumed)
(*5)
/MV
Standard Type
15mm to 100mm
15mm to 300mm
Liquid, Gas
Saturated Steam
Superheat Steam
–29 to 250 C
Only for Flow Rate
Only for Flow Rate
Only for Standard
Flow Switch
Only for Flow Rate
Only for Total Rate
T090403.EPS
IM 01F06A00-01E