GFM-VT200 series LCD elliptical gear flowmeter

NegotiableUpdate on 09/18

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Overview

Overview of GFM-VT200 Series LCD Elliptical Gear Flow Meter GFM-VT200 Elliptical Gear Flow Meter, also known as Displacement Flow Meter, belongs to a type of volumetric flow meter and is a high-precision type in flow meters

Product Details

液晶显示椭圆齿轮流量计 300 210.jpg

GFM-VT200 series LCD elliptical gear flowmeter

Overview

GFM-VT200typeElliptical gear flowmeterAlso known as displacement flowmeter, it belongs to a type of positive displacement flowmeter and is a high-precision type in flow meters. It uses mechanical measuring elements to continuously divide the fluid into individual known volume parts, and measures the total flow volume based on the number of times the measuring chamber sequentially and repeatedly fills and discharges that volume part of the fluid.

GFM-VT200 series LCD elliptical gear flowmeterThe working principle is that the liquid pushes a pair of elliptical gears to rotate; The volume of each cavity is a fixed volume; The gear speed is introduced, and the sensor emits synchronous pulse counting. The rotation of the elliptical gear is transmitted to the counter through a magnetic sealed coupling and transmission reduction mechanism, directly indicating the total amount flowing through the flowmeter. If an additional transmitting device is added, coupled with an electrical display instrument, remote transmission of only instantaneous or cumulative flow can be achieved.

application

GFM-VT200 series LCD elliptical gear flowmeterMainly used for measuring high viscosity media, different materials can be selected (cast steel, stainless steel, etc.)316）Manufacturing, suitable for flow measurement work in industrial sectors such as chemical, petroleum, pharmaceutical, power, metallurgy, and food.

feature

1Caliber from10~150mm；

2、There are various materials available for the shell: aluminum, cast iron, cast steel, stainless steel, and medium to high pressure stainless steelPPSBronze, etc;

3、There are various bearing materials to choose from: ceramic, bronze, Hastelloy, carbidePPSStainless steel, etc;

4、Material of the shaft:316stainless steel;

5TheOThe materials of the ring areVITONFluororubber, stainless steel, and Teflon are available for selection;

6、turndown ratio10：1,Maximum achievable50：1；

7、The accuracy is±1%and±0.5%Two types, repeatability±0.03%；

8、Requirements for straight pipe section during installation:5D＋3DA filter needs to be installed;

9、The highest viscosity can reach1,000 000CP；

10、The maximum pressure level can reach551bar；

11、The highest temperature resistance level can reach-10~60℃

Technical Characteristics

椭圆齿轮技术特点

Flow measurement is independent of the flow state of the fluid, as the elliptical gear flowmeter relies on the pressure head of the measured medium to drive the elliptical gear to rotate for measurement.

The higher the viscosity of the medium, the smaller the amount of leakage from the gear and measuring space gap. Therefore, the larger the viscosity of the measured medium, the smaller the leakage error, and the more advantageous it is for measurement.

The elliptical gear flowmeter has high measurement accuracy and is suitable for measuring the flow rate of high viscosity media, but it is not suitable for fluids containing solid particles(Solid particles can cause gears to get stuck, making it impossible to measure flow rate)If gas is mixed in the measured liquid medium, it can also cause measurement errors.

Installation and usage precautions

The elliptical gear flowmeter should be cleaned before installation. If the liquid contains solid particles, a filter must be installed upstream of the pipeline; If it contains gas, an exhaust device should be installed. The elliptical gear flowmeter does not have certain requirements for the front and rear straight pipe sections. It can be installed horizontally or vertically. During installation, the elliptical gear rotation axis of the flowmeter should be parallel to the ground.

The elliptical gear flowmeter installed correctly according to the requirements can ensure sufficient accuracy during use, and the accuracy of the cumulative value can usually reach0.5Grade is a relatively accurate flow measurement instrument. However, if the flow rate of the measured medium is too low during use, the impact of instrument leakage errors will become prominent, and sufficient measurement accuracy cannot be guaranteed. Therefore, different models and specifications of elliptical gear flow meters have an allowable minimum flow rate, and measurement accuracy can only be guaranteed when the actual measured flow rate is greater than the lower limit flow rate allowable value.

Secondly, when using an elliptical gear flowmeter, it is important to note that the temperature of the measured medium should not be too high, otherwise it will not only increase measurement errors but also have the potential to cause gear jamming. Therefore, the elliptical gear flowmeter is used within the specified temperature range of the instrument. After long-term use, the internal gears of the elliptical gear flowmeter will be corroded and worn, which will affect the measurement accuracy. Therefore, it is important to observe regularly and dismantle for inspection. If conditions permit, it is best to calibrate regularly.