Insertion Type Vortex Flow Meter Temperature Pressure Compensation
with Modbus RS485
1. Introduction
LUGBML is based on vonkarman's vortex principle and uses pyelectron
crystals as a test element. It is a new type of stress detection
vortex street flow meter. It has the advantages of large range
ratio, high precision, small pressure loss, good media versatility,
pulse output and flow ratio, easy to connect with the computer,
because the sensor probe and vortex generator are installed
separately, high temperature-resistant die-electric crystals do not
touch the instrument simple structure, good versatility, high
stability. The LUGBML series of vortex street flow meter sensors
can be used to detect and measure the flow of a wide range of
gases, liquids and vapors. Can be used with my company ML6000
series vortex street flow meters. It can also be combined with
computers and temperature, pressure, density sensors to form a
high-precision mass flow or heat flow detection system.
2. Working Principle
The vortex flowmeter is a volume flowmeter that is researched and
produced according to the Karman vortex principle to measure the
volume flow of gas, steam or liquid, the volume flow of standard
conditions or the mass flow. It is mainly used for flow measurement
of industrial pipeline medium fluid, such as gas, liquid, steam and
other media.
It is characterized by small pressure loss, large measuring range,
and high accuracy. It is hardly affected by fluid density,
pressure, temperature, viscosity and other parameters when
measuring volume flow under working conditions. There are no
movable mechanical parts, so the reliability is high and the
maintenance is small. The instrument parameters can be stable for a
long time. The vortex flowmeter adopts piezoelectric stress sensor,
which has high reliability and can work in the working temperature
range of -20℃～+250℃. It has analog standard signal and digital
pulse signal output, which is easy to use with digital systems such
as computers. It is a relatively advanced and ideal measuring
instrument.
3. Specifications
| Measuring Medium | Steam, Gas, Liquid(avoid multiple direction fluid) |
| Accuracy | ±1.0% for Liquid, ±1.5% for Gas |
| Repeatability | 0.33% for Liquid, 0.5% for Gas |
| Velocity Range | 0.7~7m/s for Liquid, 7~40m/s for Gas |
| Working Pressure | 1.6MPa(standard), 2.5~4.0MPa(according to customer's requirements) |
| Fluid Temperature | -40~250℃(standard temperature); 100~350℃(high temperature) |
| Body Material | 304 SS for standard, 316 SS for option |
| Output | Pulse(three-wired, low voltage≤1V and high voltage≥4V),4-20mA,
RS485 |
| Power Supply | 24VDC/12VDC,3.6V Lithium Battery |
| Ambient Temperature | -35℃~60℃(without LCD)；-5℃~60℃(with LCD) |
| Relative Humidity | 5~95% |
| Protection Class | IP65 |
| Electrical connection | M20*1.5 |
4. Dimensional Sketche
| DN | A(mm) | B(mm) | C(mm) |
| 25 | 65 | 65 | 368 |
| 32 | 66 | 65 | 374 |
| 40 | 80 | 76 | 382 |
| 50 | 80 | 89 | 388 |
| 65 | 93 | 102 | 402 |
| 80 | 100 | 114 | 408 |
| 100 | 126 | 136 | 435 |
| 125 | 146 | 160 | 463 |
| 150 | 166 | 182 | 489 |
| 200 | 196 | 248 | 543 |
| 250 | 210 | 282 | 596 |
| 300 | 240 | 334 | 648 |
7. Configuration
| LUGBML Series Vortex Flow Meter Configuration |
| Model | LUGBML |
| Sensor Installation | D | Clamp Type Sensor |
| F | Flange Type Sensor |
| C | Insertion Type Sensor |
| Medium | L | Liquid |
| G | Gas |
| S | Steam |
| Pipe Material | 25 | 25mm |
| ...... | |
| 300 | 300mm |
| Power Supply | A | Duplicate Supply(24VDC/12VDC+3.6V Lithium Battery) |
| B | 3.6V Lithium Battery |
| C | 24VDC/12VDC |
| Display | D | With Digital Display |
| P | Without Digital Display |
| Output | N | None |
| P | Pulse |
| A | 4-20mA |
| R | RS485 |
| H | Hart |
| Flange Type | G | GB (Standard) |
| A | ANSI |
| J | JIS |
| B | BS |
| O | Others |
| Sensor Material | A | 304 SS (Standard) |
| B | 316 SS |
| O | Others |
| Medium Temperature | E | 40~250℃ |
| H | 100~350℃ |
| Rated Pressure | 16 | 1.6MPa |
| 25 | 2.5MPa |
| 40 | 4.0MPa |
| O | Others |
| Protection Class | 0 | IP65 |
| Explosion Proof | 0 | None |
| EX | Explosive Proof |
