Xi'an Kacise Optronics Co.,Ltd.
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LCD Display Remote Display And Control 4-20MA Steam Natural Gas Vortex Flow Meter
Introduction
A vortex flowmeter is a volume flowmeter that utilizes the Karman vortex principle to measure the volume flow of gas, steam, or liquid. It can measure volume flow under standard conditions or mass flow. This type of flowmeter is commonly employed for fluid flow measurement in industrial pipelines, including gases, liquids, and steam.
Key characteristics of vortex flowmeters include low pressure loss, a wide measurement range, high precision, and minimal sensitivity to fluid density, pressure, temperature, viscosity, and other parameters during volume flow measurements in operating conditions. Since there are no moving mechanical parts, these flowmeters offer high reliability and require minimal maintenance. The instrument parameters remain stable over extended periods. Vortex flowmeters typically employ piezoelectric stress sensors, providing high reliability and operating within a temperature range of -40°C to 350°C. They offer both analog standard signal and digital pulse signal outputs, making them compatible with computers and other digital systems. Vortex flowmeters are considered advanced and ideal measuring instruments.
The KVF series of vortex flowmeters comes in specifications ranging from DN15 to DN600. They are categorized into full-tube vortex flowmeters and plug-in vortex flowmeters based on structural characteristics. Depending on the output signals, they can be further divided into pulse output mode sensors and transmitters with standard current output. These instruments offer advantages such as a wide flow measurement range, high accuracy, simple structure, minimal pressure loss, and the absence of moving parts, making them suitable for measuring both instantaneous and total fluid flow in closed pipelines.
Structure vortex flow meter
Features
1. Simple and firm, no moving parts, high reliability, long-term operation is very stable
2. Zero drift, high precision
3. Pressure loss is small, easy to maintain
4. Measuring range, range up to: 1: 15
5. Wide range of applications, gas, liquid, steam flow can be measured
6. Wide operating temperature range: -40 ℃ to 350 ℃ high temperature
7. Output pulse signal or current signal, easy to use with computer and other digital systems
Parameters
| Pipe Diameter | DN15~DN1800 |
| Meter Materials | 1Cr18Ni9Ti |
| Nominal pressure (Mpa) | 1.6Mpa; 2.5Mpa; 4.0Mpa |
| Measured medium temperature (℃) | -40~+250℃; -40~+350℃ |
| Environmental conditions | Temperature:-10~+55℃, humidity 5%~90%, pressure: 86~106Kpa |
| Accuracy class | liquid: reading ±0.5 |
| Measuring gas or steam: | reading±1.0,±1.5 |
| Turndown ratio | 1:10;1:15 |
| Pressure loss coefficient | Cd<2.6 |
| Output signal | 4-20mA or Pulse |
| Power supply | sensor: +12VDC, +24VDC transmitter: +24VDC On site display: 3.2V battery |
| Signal transmission lines | STVPV3×0.3(three-wire), 2×0.3(two- wire) |
| Installation | Integrated clamping flange or flange connection |
| Transmission distance | ≤500m |
| Signal line interface | Male threadM20×1.5 |
| Explosion levels | ExdIIBT6 |
| Protection class | IP65 |
| Allow vibration acceleration | 1.0g |
Model selection
| KVF | Parameters | ||||||||||
| Nominal diameter | DNXX | DN15~DN1800 (mm) | |||||||||
| Structure | F | Remote type with display | |||||||||
| Y | Compact type with display | ||||||||||
| Accuracy | A | Pipe type: Class 1.0 | |||||||||
| B | Insertion type: Class 2.5 | ||||||||||
| Nominal pressure | 16 | 1.6Mpa | |||||||||
| XX | Customization | ||||||||||
| Max. temp. of medium | M | <250℃ | |||||||||
| H | >250℃ | ||||||||||
| Other function | P | With pressure compensation | |||||||||
| T | With temperature compensation | ||||||||||
| PT | With pressure and temperature compensation | ||||||||||
| Power | 1 | 12~28VDC | |||||||||
| 2 | 85~265VAC (Remote display) | ||||||||||
| 3 | 3.6V lithium battery (on site display) | ||||||||||
| Output | A | 4-20mA | |||||||||
| M | Voltage pulse | ||||||||||
| H | HART | ||||||||||
| R1 | RS232 | ||||||||||
| R2 | RS485 | ||||||||||
| Installation | 1 | Flange | |||||||||
| 2 | Clamp flange | ||||||||||
| 3 | Insertion | ||||||||||
| 4 | Thread | ||||||||||
| 5 | Clamp | ||||||||||
| Explosion proof | A | No explosion proof | |||||||||
| B | Intrinsic explosion proof | ||||||||||
| G | Flame proof | ||||||||||
Package
Application