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CENTECH VIETNAM JSC

Address: No. 91-93, Lane 5, An Phu Ward, District 2, HCM City
Telephone: (+84) 24 6663 2426
Hotline: (+84) 961 739 336
Email: centech@centechvn.com
Operation Time: all weekdays (except Sunday and National Holidays)

Yokogawa digitalYEWFLO Multivariable

Vendor: Yokogawa

The world's first two-wire Multi-variable Type (with built-in temperature sensor) can directly output the mass flow rate of saturated steam.

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Overview

The world's first two-wire Multi-variable Type (with built-in temperature sensor) can directly output the mass flow rate of saturated steam.

The digitalYEWFLO vortex flowmeter combines the field proven sensor and body assembly used in more than 260,000 units installed worldwide with a unique and powerful combination of digital technology that includes spectral signal processing (SSP), a Yokogawa innovation. The digitalYEWFLO vortex flowmeter 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.

Features

Multivariable Type: option code /MV

  • Resistance temperature sensor built into vortex shedder bar
  • User selectable Flow, Temp, Total and other displays
  • Mass flowrate calculated using temperature readings and steam table data
  • Able on its own to output mass flowrate

Saturated Steam Measurement Mechanism

A steam table provides data on the temperature, pressure and density of steam and is provided by a certification body such as the ASME. The saturated steam curve shows the steam saturation point for each pressure/temperature level. The digitalYEWFLO converter calculates the mass flowrate using the density figure from the steam table. With its Spectral Signal Processing system, the digitalYEWFLO is able to accurately measure fluctuations in temperature.
- With superheated steam, density is calculated as a fixed pressure value that includes the superheated temperature value.

With the totalization function, energy consumption data collected over a period of time can be stored in memory and used to devise measures for reducing energy consumption.

Reliability

Durability

Durability through simple design and construction.

DY Reliability

 

Advanced Self-diagnostics

Provides diagnostic messages on high vibration environments, excessive flow fluctuations, and clogging or plugging in the area around the shedder bar. Analysis of the process allows true condition-based maintenance.

Advanced Self-diagnostics


Specification


Standard TypeReduced Bore TypeMulti-Variable Type
ModelModel DY Vortex Flow meter
(Integral Type, Remote Type)
Model DYA Vortex Flow Converter
(Remote Type)
(Option for High Process Temperature
Version: /HT,
Option for Cryogenic Version: /LT)
Option: /R1, /R2
1 size down: /R1
2 size down: /R2
(Option for High Process Temperature
Version: /HT)
Option: /MV
Fluid to be MeasuredLiquid, Gas, Steam (Avoid Multiphase Flow and Sticky Fluids)
Nominal SizeWafer15 to 100 mmN/A25 to 100 mm
Flange15 to 400 mmR1: 25 to 200 mm
(Detector: 15 to 150 mm)
R2: 40 to 200 mm
(Detector: 15 to 100 mm)
25 to 200 mm
(Special: 250 to 300 mm)
AccuracyLiquid±0.75% of Reading
(Depends on Reynolds number)
±1.0% of Reading
(Depends on Reynolds number)
±0.75% of Reading
(Depends on Reynolds number)
Gas
Steam
±1.0% of Reading
(Depends on flow velocity)
Output SignalDual Output (Both analog and pulse output available)
Communication: HART 5/HART 7, BRAIN, FOUNDATION fieldbus
Process Temperature-29 to 250 deg C
-29 to 450 deg C (/HT)
-196 to 100 deg C (/LT)
-29 to 250 deg C
-29 to 450 deg C (/HT)
-29 to 250 deg C
-29 to 400 deg C (/HT)
Process Pressure-0.1MPa (-1kg/cm2) to flange rating
Ambient Temperature-29 to 85 deg C (Depends on model type)
Ambient Humidity5 to 100% RH (No Condensation)
MountingFlange or Wafer Type
JIS 10/20/40K
ANSI 150/300/600/900
(Special: 1500)
DIN PN 10/16/25/40/60/100/160
Flange Type only
JIS 10/20K
ANSI 150/300
Flange or Wafer Type
JIS 10/20/40K
ANSI 150/300/600/900
DIN PN 10/16/25/40
Electrical ConnectionJIS G1/2 Female, ANSI 1/2NPT Female, ISO M20×1.5 Female
Explosion Protected TypeTIIS Ex d, FM Ex d/Ex ia, ATEX Ex d/Ex ia,
CSA Ex d/Ex ia, IECEx Ex d, SAA Ex ia
MaterialBody: Stainless steel(Special: Hastelloy, Carbon steel)
Shedder Bar: Duplex stainless steel(Option: Stainless steel, Hastelloy)
Gasket: Stainless steel with Teflon coating (/HT: with Silver plating)
Converter housing, case and cover: Aluminum alloy(Option: Stainless steel)