Tokyo Ryuki Kogyo YEWFLO Vortex Flow Meter

The YEWFLO vortex flowmeter series, which has long-term reliability and worldwide sales performance, is equipped with an SSP (Spectral Signal Processing)

Description

The YEWFLO vortex flowmeter series, which has long-term reliability and worldwide sales performance, is equipped with an SSP (Spectral Signal Processing) * amplifier that newly applies the latest digital signal processing technology. Not only is it highly accurate and stable in harsh conditions, but it is also maintenance-free with a full range of new functions. We will contribute to cost reduction with a vortex flow meter. * SSP is Yokogawa’s original vortex technology.

Digital YEWFLO logo-Field equipment (industrial instrument)

Digital vortex flowmeter is equipped with SSP (Spectral Signalprocessing) * that applies the latest digital signal processing technology to the YEWFLO series, which has long-term reliability and a sales record of 400,000 units worldwide. By doing so, it is a vortex flow meter that realizes higher stability and higher accuracy in addition to the reliability and durability so far.

When a columnar object (vortex generator) is inserted into the flow, the boundary layer separates from the surface and vortices called Karman vortex trains in the opposite direction of rotation are alternately generated in the rear flow. The flow velocity or flow rate is measured by measuring the frequency at which this vortex train is generated.

Model Number

  • YEWFLO (Digital Vortex Flowmeter)

Brand

Ryuki Kogyo

Tokyo Ryuki Kogyo

Tokyo Ryuki Co., Ltd., a manufacturer of industrial flow meters and fluid-related equipment. For many years, we manufacture and sell products such as differential pressure type flow meter, area type flow meter, flow switch, metal tube type flow meter, galvanometer, level meter, and measuring pot.

Features

New function SSP (Spectral Signal Processing) amplifier

It is a function that automatically adjusts to the optimum vortex flow rate measurement conditions immediately after the power is turned on. It eliminates the effects of pipe vibration and noise, accurately captures vortex signals even when the plant conditions change, and secures a stable output signal. By installing SSP, the stability in the vortex flow rate low flow rate region has also been significantly improved.

Full self-diagnosis function

By constantly monitoring fluid conditions, it analyzes vortex flow signal anomalies and displays self-diagnosis messages. This enables early judgment and response on-site. It is also useful for maintenance planning.

High precision

With the optimum adjustment of ± 0.75% (liquid) of the indicated value and ± 1.0% (gas, vapor) of the indicated value, SSP can always maintain high-precision measurement over a wide flow rate range.

Wide fluid temperature range

It can measure up to 450 ° C for high temperature and -196 ° C for extremely low temperature.

Easy parameter setting

By extracting frequently used parameters and combining them into one block, it is easy to set / change parameters and work time can be shortened.

Simultaneous analog / pulse output

Both instantaneous flow rate or temperature and integrated value can be output at the same time.

Easy-to-read display

Instantaneous flow rates and integrated values ​​or temperatures (optional) can be displayed simultaneously in a column configuration. It is even more convenient to display the self-diagnosis message.

Equipped with alarm output and status contact output functions

When an alarm occurs due to the self-diagnosis function, you can be notified by the contact output. Also, when the flow rate becomes less than the set value, it can be notified by the contact output (flow switch function).

Compact and lightweight converter

The number of parts has been reduced and reliability has been further improved.

Liquids, gases, and vapors can be measured with the vortex flow rate detector of the same structure.

The simple structure of the vortex flow detector with no moving parts provides excellent reliability and durability.

The maximum cable length of the separated type can be applied up to 30m.

Applications

  • Liquids
  • Gases
  • Saturated vapors
  • Superheated vapors (avoid multiphase flow and adherent fluids)

Specifications

Standard type Reducer type Multi-variable type
format DY type vortex flowmeter
(integral type,
remote type detector)
DYA type remote type converter
(additional specifications for high temperature: / HT,
additional specifications for extremely low temperature: / LT)
Additional specifications: / R1, / R2
1 size down: / R1
2 size down: / R2
(additional specifications for high temperature: / HT)
Additional specifications: / MV
Measuring fluid Liquids, gases, saturated vapors, superheated vapors (avoid multiphase flow and adherent fluids)
Caliber Wafer 15-100mm none 25-100mm
Flange 15-400mm R1: 25-200mm
(detection part: 15-150mm)
R2: 40-200mm
(detection part: 15-100mm)
25-200mm
(custom specification: 250-300mm)
accuracy liquid ± 0.75% of the indicated value ( depending on the
Reynolds number )
± 1.0% of the indicated value ( depending on the
Reynolds number )
± 0.75% of the indicated value ( depending on the
Reynolds number )
Gas
vapor
± 1.0% of the indicated value
(depending on the flow velocity)
Output signal Analog output, transistor contact output (simultaneous output possible)
Communication: BRAIN, HART 5 / HART 7, F OUNDATION fieldbus
Fluid temperature -29-250 ℃
-29-450 ℃ (/ HT)
-196-100 ℃ (/ LT)
-29-250 ℃
-29-450 ℃ (/ HT)
-29-250 ℃
-29-400 ℃ (/ HT)
Fluid pressure -0.1MPa ~ Depends on flange rating
Ambient temperature -29 to 85 ° C (depending on specifications)
Ambient humidity 5-100% RH (no condensation)
Mounting method Flange mounting or
wafer mounting
JIS 10/20 / 40K
ANSI 150/300/600/900
(custom specification: 1500)
DIN PN
10/16/25/40/60/100/160
Flange mounting only
JIS 10 / 20K
ANSI 150/300      
Flange mounting or
wafer mounting
JIS 10/20 / 40K
ANSI 150/300/600/900
DIN PN 10/16/25/40
Wiring connection port JIS G 1/2 female thread, ANSI 1 / 2NPT female thread, ISO M20 x 1.5 female thread
Explosion proof TIIS Ex d, FM Ex d / Ex ia, ATEX Ex d / Ex ia,
CSA Ex d / Ex ia, IECEx Ex d, SAA Ex ia
Material Body: Stainless steel (custom specification: Hastelloy)
Vortex generator: 2-phase stainless steel (Additional specifications: Stainless steel, Hastelloy)
Gasket: Stainless steel (with Teflon coating) (/ HT: with silver plating)
Conversion part housing, case, Cover: Aluminum alloy

See the general specifications for details.
(Note) The AXFA11 converter can also be combined with the AXW separation type detector.