Vortex Flowmeter
Vortex flowmeter is a flowmeter used to measure the velocity of fluid in a closed pipe. It’s a broad-spectrum flow meter which can be used for metering, measurement and control of most steam, gas and liquid flow for a very unique medium versatility, high stability and high reliability with no moving parts. The vortex flowmeter is relatively economical because of its simple flow measurement system and ease of maintenance. It is widely used in heavy industrial applications, power facilities, and energy industries, particularly in steam processes
It has the following distinguishing advantages:
- simple structure and low failure rate, no moving parts and high reliability
- Simple installation and convenient maintenance
- It offers very low power consumption, allowing for use in remote areas
- The detection sensor does not directly contact the measured medium, with stable performance and long service life
- The output is a pulse signal proportional to the flow rate, no zero drift, and high accuracy
- The pressure loss is small, the operating cost is low, and it is more energy-saving
- Largely unaffected by changes in pressure, density, temperature and viscosity
Working Principle
When the medium flows through the Bluff body at a certain speed, an alternately arranged vortex belt is generated behind the sides of the Bluff body, called the “von Kármán vortex“. Since both sides of the vortex generator alternately generate the vortex,the pressure pulsation is generated on both sides of the generator,which makes the detector produce alternating stress. The piezoelectric element encapsulated in the detection probe body generates an alternating charge signal with the same frequency as the vortex, under the action of alternating stress. The frequency of these pulses is directly proportional to flow rate. The signal is sent to the intelligent flow totalizer to be processed after being amplified by the pre-amplifier.
Key Feature
- Wide range of application, the flow of steam, gas and liquid can be measured
- Wide measuring range, up to 1:10 range ratio.
- The inner diameter of the vortex flow sensor is 25-300mm (full tube)
- Plug-in vortex flow sensor application inner diameter range is 350-1200mm (plug-in)
- The accuracy of measuring liquid with full tube is 1%, and the accuracy of measuring steam and gas is 1.5%
- The measured medium temperature is -20~150℃, -40~250℃, +100~350℃ (tube only). The output signal is three-wire voltage pulse, three-wire system 4-20mA, two-wire system 4-20mA.
- Within a certain Reynolds number range, the output signal frequency is not affected by the fluid physical properties and composition changes. The meter coefficient is only related to the shape and size of the vortex generator. No compensation is required when measuring the fluid volume flow, and it is generally not necessary after changing accessories Recalibrate the meter coefficient
Application Range
Vortex flowmeters are suitable for a variety of applications and industries but work best with clean, low-viscosity, medium to high speed fluids. Some of the main uses include:
- Custody transfer of natural gas metering
- Steam measurement
- Flow of liquid suspensions
- General water applications
- Liquid chemicals & pharmaceuticals
Find out more about our products
Our electromagnetic flowmeters are optimised for customers and applications for the precise flow measurement of virtually all pumpable media.
Technical Specification
| # | Item Name | Parameter Values |
|---|---|---|
1 | Nominal diameter (mm) | DN15-DN300(Pipeline type）, DN200-DN3000 (insertion type) |
2 | Nominal pressure (MPa) | DN25-DN200 4.0（＞4.0Agreement Supply），DN250-DN300 1.6（＞1.6Agreement Supply） |
3 | Medium temperature (℃) | Piezoelectric: -40~260, -40~320; Capacitive: -40~300, -40~400, -40~450 (order agreement) |
4 | Body material | 304SS,316L(customize） |
5 | Allow vibration acceleration | Piezoelectric: 0.2g Capacitive: 1.0~2.0g |
6 | Accuracy | ±1%R, ±1.5%R, ±1FS; plug-in type: ±2.5%R, ±2.5%FS |
7 | Extent | 1:6~1:30 |
8 | Supply voltage | 24V DC,3.6V Battery-powered type |
9 | Output signal | Square wave pulse (excluding battery-powered type): high level ≥5V, low level ≤1V; current: 4~20mA |
10 | Pressure loss coefficient | Comply with JB/T9249 standard Cd≤2.4 |
11 | Explosion-proof mark | Intrinsically safe type: Exd II ia CT2-T5 Flameproof type: Exd II CT2-T5 |
12 | Protection class | IP65 |
13 | Environmental conditions | Temperature -20℃~55℃, relative humidity 5%~90%, atmospheric pressure 86~106kPa |
14 | Transmission distance | Three-wire pulse output type: ≤300m, two-wire standard current output type (4~20mA): load resistance ≤750Ω |
Ordering Details
Just need 1 pcs
5 pcs/3 days, 10 pcs/5 days, 50 pcs/10 days
Courier delivery, by sea, by air
Qingao, Tianjin, Shanghai, Shenzhen
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12 Months
