Tokyo Ryuki Kogyo YEWFLO Vortex Flow Meter, 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)
The digital vortex flowmeter is equipped with SSP (Spectral Signal processing) * 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)
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.
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.
