YOKOGAWA digitalYEWFLO Reduced Bore Type Vortex Flowmeter
Minimum measurable flow up to five times lower than conventional vortex flowmeter. Integrated construction with reducers built into the flowmeter body.
The digitalYEWFLO Reduced Bore Type Vortex Flowmeter features a cast stainless steel body and a concentric reducer and expander that enable stable flowrate measurements in low-flow conditions.
This model reduces installation cost and expands the range of applications available to customers.
Features: digitalYEWFLO Reduced Bore Type Vortex Flowmeter
The optimal solution
No longer is it necessary to change the orifice plate to adjust for changes in the flow rate.
Totalization and self-diagnostic functions are available for enhanced flowrate management.
Easy installation
<Conventional configuration>
Installation is difficult, involving many different nuts, bolts, and gaskets.
Customer must provide reducers and extension tubes.
There are six connection points, each of which is a potential leak point.
<The reduced bore digitalYEWFLO solution>
Expanded low flow measurement range
Easy to install
Requires no additional parts
There are only two connection points -- meaning there are fewer locations where leaks can occur.
The same face-to-face dimensions eases the task of installing other sizes or types of digitalYEWFLO flowmeters.
While formerly two different types of orifice plates had to be changed to adapt to fluctuations in the line flow rate, this is no longer necessary with the digitalYEWFLO reduced bore type.
In lines that require annual or long-term flow maintenance, the digitalYEWFLO eliminates the need to interrupt the flow to perform this work.
Yokogawa vortex flowmeters are well suited to high temperature and high pressure applications, and the quality of flow management can be improved even further through the use of anti-vibrating efficiency and self diagnostic functions that rely on the digitalYEWFLO's SSP system.
Specifications: digitalYEWFLO Reduced Bore Type Vortex Flowmeter
|
|
Standard |
Multi-Variable |
Reduced Bore |
|
Model & code |
DY Vortex Flowmeter |
Optional code:/MV |
Option code:/R1,/R2 |
|
Fluid to be measured |
Liquid, gas, steam (avoid multiphase flow and sticky fluids) |
|
Nominal size |
15mm ∼ 300mm
(400mm:special) |
25mm ∼ 200mm |
25mm ∼ 200mm |
|
Accuracy |
Liquid: ±1.0% of reading (20000≤Re≤1000)
Liquid: ±0.75% of reading (D×1000≤Re) |
Liquid: ±1.0% of reading
(20000≤Re≤1000) |
|
Gas, steam: ±1.0% of reading (flow velocity less than 35m/s)
Gas, steam: ±1.5% of reading (flow velocity 35m/s ∼ 80m/s) |
|
Output signal |
Simultaneous output(both analog and transistor contact output available) |
|
Process
temperature
range |
-29 deg C - 260 deg C
(standard) |
-29 deg C - 260 deg C
(standard) |
-29 deg C - 260 deg C
(standard) |
|
-196 deg C∼100 deg C
(option: cryogenic version) |
N/A |
N/A |
|
-29 deg C∼450 deg C
(option: high process
temperature version) |
N/A |
-29 deg C∼450 deg C
(option: high process
temperature version) |
|
Process
pressure
limit |
-0.1MPa (-1kg/cm2) to flange rating |
|
Ambient temperature |
-29 to 85 deg C (Integral type / No indicator)
-29 to 80 deg C (Integral type / with indicator)
-29 to 85 deg C (Remote type detector)
-40 to 85 deg C (Remote type converter / No indicator)
-30 to 80 deg C (Remote type converter / with indicator) |
|
Ambient
humidity |
5～100%RH( Non-condensing） |
|
Mounting |
Integral type and Remote type detector: Flange mounting or wafer mounting Remote type converter: 2 inch pipe mounting
JIS10/20/40, ANSI150/300/600/900, JPI150/300/600,DIN PN10/16/25/40 |
|
Electrical connection |
JIS G1/2 female, ANSI 1/2NPT female, ISO M20×1.5 female |
|
Electrical classification |
JIS flameproof, FM explosion proof/intrinsically safe
ATEX (CENELEC flameproof/intrinsically safe/IEC type n)
CSA explosion proof/intrinsically safe : Dual Seal
SAA flame proof/intrinsically safe |
|
Material |
Body: SCS14A cast stainless steel (equivalent to SUS316,CF8M)
Shedder bar: duplex stainless steel (option:anti-corrosion version)
Gasket: SUS316 stainless steel with polytetrafluoroethylene (Teflon) coating
Converter housing and case cover: aluminum alloy or ASTM CF8M (equiv. JIS SCS14A) (Option: /E1) |
|
Applicable Standard |
*EMC Conformity Standards:
EN61326-1 Class A, Table 2 (For use in industrial locations), EN61326-2-3
EN55011 Class A Group 1
*Pressure Equipment Directive:
Notified Body Identification Number 0038 Module H |
