plc automation


Yokogawa digitalYEWFLO Series Vortex Flow Meter

description:The digital YEWFLO vortex flow meter combines the field proven sensor and body assembly used in more than 400,000 units installed worldwide with a unique and powerful combination of digital technology that includes spectral signal processing...
Yokogawa digitalYEWFLO Series Vortex Flow Meter

The digital YEWFLO vortex flow meter combines the field proven sensor and body assembly used in more than 400,000 units installed worldwide with a unique and powerful combination of digital technology that includes spectral signal processing (SSP), a Yokogawa innovation. The digitalYEWFLO vortex flow meter is accurate and stable, even in harsh process conditions, and has a highly reliable and robust design that delivers improvements in plant efficiency and reduced operating costs


Interoperability (ITK 5.0.1)
  FOUNDATION fieldbus specifications (ITK 5.0.1) grant the interoperability of the field instruments.
Reduction of instrumentation cost
  The multi-drop wiring on the Fieldbus communication line contributes to the reduction of wiring cost.
Mass flow calculation
  Arithmetic (AR) function block expands the mass flow calculation function for the saturated steam, superheated steam and gases by using external pressure/temperature input (/MV:internal temperature input) with a high accuracy. Additionally, in combination with FlowNavigator Flow Configuration Software (FSA120) brings to the high accurate mass flow calculation output, ex. natural gas process, physical properties database for 126 fluids and custom fluids.
  The common function block of field devices have the same operability, because of their common specification. The individual device setting (Transducer Block parameter setting) can be done simply by executing METHOD.
Independent flow and temperature calculations (multi-variable type: option)
  The multi-variable type (/MV: option) of digitalYEWFLO separately outputs flowrate output (AI1) and temperature output (AI2) . Two DI function blocks output the limit signal output both flowrate and temperature.
Advanced self-diagnostics
  The digitalYEWFLO has advanced self-diagnostics which can predict and identify anomalies in the process conditions, such as high pipeline vibration and abnormal flow. Also, the Fieldbus type digitalYEWFLO supports various alarm functions, such as high/low-limit alarms and alerts of block errors, based on the FOUNDATIONfieldbus specification.
Link Master function : BASIC at factory setting.
  digitalYEWFLO Fieldbus models support the Link Master function. This function enables backup of network manager and local control only by field devices.
PID function block (option)
  A PID function block (with the I-PD control algorithm) enables the field device to control the process.
Software download function (option)
  Software download function permits to update DY software via a FOUNDATION fieldbus. Typical use of this function is to add new features such as function blocks and diagnostics to existing devices.




  digitalYEWFLO Fieldbus Type Vortex Flowmeter
Output signals Digital communication signals compliant with the FOUNDATION fieldbus protocol
Supply voltage 9 to 32 V DC for general-purpose and flameproof types
9 to 24 V DC for intrinsically safe type (Entity model)
9 to 17.5 V DC for intrinsically safe type (FISCO model)
Communications line Supply voltage: 9 to 32 V DC
Supply current: 15mA (maximum)
Function specifications
Function blocks
- AI function blocks (3):
    AI1: monitors the flowrate and totalized flow rate
    AI2: monitors the temperature (if the multivariable type)
    AI3: volumetric flow input for mass flowrate calculation of AR.
- DI function blocks (2):
    for flow and temperature limit switches
- AR function blocks (1):
    mass flow calculation
- IT function blocks (1):
    integrates a variable as a function of the time or accumulates the counts
- PID blocks (1):
    for models with LC1 option
*Combination with multivariable option (/MV) is available.
Hazardous area classifications TIIS / FM / CENELEC / CSA / SAA
Flow configuration tool FlowNavigator Flow Configuration Software (FSA120)



Lily Li
|T: 86-027-85581877 |F: 86-027-85309780 | |
Ad: 7-A16,Caishen Commercial Plaza,Hankou Railway Station,Wuhan, Hubei, China

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