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Shanghai Foreckon Instrumentation Co., Ltd.

Cone Flowmeter, Flowmeter, Classic Venturi Tube manufacturer / supplier in China, offering Smart Differential Pressure Dirty Medium Flowmeter (JH-VCFM), Oil Field Gas Turbine Flowmeter (JH-LWQ), Low Cost CO2 Gas Turbine Flowmeter for Liquid Oil Diesel with Pressure Transmitter (JH-LWQ) and so on.

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Smart Differential Pressure Dirty Medium Flowmeter (JH-VCFM)

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Basic Info
  • Model NO.: JH-VCFM
  • Main Application: Water, Wastewater, Diesel Fuel, Fuel Oil, Nature Gas, Corrosive Liquid/Gas, Asphalt
  • Sensor: Tube/Flange
  • Type: Differential Pressure Flow Meter
  • Measuring Principle: Mechanics
  • Certification: CE, RoHS, ISO
  • Flow Range: 0.16-500 M3/H
  • Medium Temperature: -40-700c
  • Work Pressure: 16MPa
  • Trademark: JH
  • Origin: Shanghai
  • Accuracy: ±0.2-0.5%
  • Size: Dn25-3000
  • Application: Industrial Production
  • Measuring Media: Liquid, Gas, Steam
  • Measurement Object: Closed Pipeline
  • Body Material: Cast Iron /Cast Steel/Stainless Steel
  • Power Supply: 12VDC/24VDC
  • Output: Pulse/4-20mA/RS485
  • Protection Class: IP65
  • Specification: CE, ISO
  • HS Code: 9026100000
Product Description
V Cone flowmeter

V cone flowmeter is a new type of high-precision flowmeter that can accurately measure all kinds of Reynolds number. It can meet application condition of a variety of media that its operating principle should be the same as the principle of differential pressure of other types, both of which are based on conversation of energy theorem in sealed pipeline. V-cone flowmeter has a better performance for its unique design structure.

V cone flowmeter hangs in the center of the pipeline a cone-shaped throttle piece, which impedes the flow of media, reshapes the flow curve, and immediately forms a meiobar in taper downstream pipeline. There is a pressure difference between the positive pressure in upstream pipeline and the throttled negative pressure in downstream pipeline. Extract the positive and negative pressure using extraction orifice with negative pressure orifice put in the upstream pipeline and the negative pressure orifice at the bottom of the cone. By measuring pressure difference, you can calculate the pipeline's flow based on Bernoulli equation. The cone is in the pipeline center so as to optimize media flow curve. Thus this flowmeter enjoys a higher accuracy with lower requirements for upstream and downstream ascending pipe.

Working principle:
The V-type flowmeters is a differential pressure flowmeters, it get differential pressure to reflect flow rate through throttle. Throttling set is a cone a hanging in the pipeline central. High pressure the static pressure upstream pH (positive pressure) gets from the wall before the cone, low pressure(the pressure downstream) PL (negative pressure) gets from cone central, square root of the differential pressure DP is proportional to the flow.

Main technique parameter of LGVH flow sensor
Accuracy: ± 0.5% (DP transmitter accuracy should be ≥ 0.2)
(β : 0.45 ~ 0.85, when β < 0.55 and range turn down 4: 1, the accuracy is 0.30)
The repetibility: ± 0.1%
Working pressure: 16 MPa, the biggest pressure can up to 42MPa;
Working temperature: -40~700ºC
The environment temperature: -40-65ºC
Straight pipe installation requirements: Upstream 0~3D straight pipe, downstream 0~1D straight pipe.
Wide measure range: 10: 1(standard)
Small pressure loss: The same β Valve, the pressure loss only 1/3~1/5 of orifice plate.

Applicable medium:
V cone flow sensor is suitable for almost all the gas and liquid medium.

Features:
-Low installation requirement: 0 ~ 3D for upper stream and 0 ~ 1D for down stream
-Turndown ratio: 10:1
-Low pressure loss: pressure loss is just 1/3 ~1/5 of that of orifice plate for same β
-Abrasion resistance: vacuum will be produced after streamlined cone restriction, avoiding cone from wearing out
-No block, no adherence: due to the contour of the V-cone not allow for area of stagnation where debris, condensation or particles from the fluid could accumulate
-Excellent repeatability:  the V-cone primary element exhibits excellent repeatability of + 0.1%
-Long term stability: β ratio with no change for long term provide high accuracy for long time
-Signal stability: signal fluctuation is 1/10 of that of orifice plate
-High accuracy: + 0.5%

Successful flow measurement of liquid types:
Gas: Coke oven gas, blast furnace gas, converter gas, mixed gas, etc;
Natural gas: Including natural gas which moisture content more than 5%;
Various hydrocarbon gas: Alkane and olefin gas, etc;
Various gas manufacturing: Hydrogen, helium, argon, oxygen, nitrogen, etc;
Corrosive gas: Wet chlorine gas, etc;
Air: Including wet and dust air, compressed air etc;
Flue-gas: Flue gas emissions from all kinds of boiler, heati
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