Ecer asks for your consent to use your personal data to:
Personalised advertising and content, advertising and content measurement, audience research and services development
Store and/or access information on a device
Your personal data will be processed and information from your device (cookies, unique identifiers, and other device data) may be stored by, accessed by and shared with 135 TCF vendor(s) and 65 ad partner(s), or used specifically by this site or app.
Some vendors may process your personal data on the basis of legitimate interest, which you can object to by do not consent. Contact our platform customer service, you can also withdraw your consent.
{"title":"High Precision Rotor Flowmeter Wear Resistant Anti-Interference","imgUrl":"https:\/\/img.chinax.com\/nimg\/da\/11\/e1921eea31bc4b4f586b0c558af3-200x200-1\/high_precision_rotor_flowmeter_wear_resistant_anti_interference.jpg","attrs":{"Measurement Principle":"Positive Displacement","Fluid Compatibility":"Water, Oil, Chemicals","Installation Orientation":"Horizontal or Vertical","Flow Range":"0.1 to 1000 liters per minute"}}
{"title":"Precise Liquid Volumetric Flowmeter Various Media Measurement","imgUrl":"https:\/\/img.chinax.com\/nimg\/93\/08\/ec8a908a9812d984b2220d6348a7-200x200-1\/precise_liquid_volumetric_flowmeter_various_media_measurement.jpg","attrs":{"Power Supply":"24 VDC or battery-powered","Material":"Stainless steel, aluminum, or plastic","Fluid Compatibility":"Water, oil, fuel, chemicals","Measurement Principle":"Positive Displacement"}}
{"title":"Wide Range Waist Wheel Flowmeter Precision Roots High Viscosity","imgUrl":"https:\/\/img.chinax.com\/nimg\/44\/ad\/5ac9e9ead11b740902e2c6fb88ce-200x200-1\/wide_range_waist_wheel_flowmeter_precision_roots_high_viscosity.jpg","attrs":{"Installation Orientation":"Horizontal or Vertical","Connection Size":"1\/2 inch to 4 inches","Product Name":"Roots Flowmeter","Output Signal":"Pulse \/ Analog \/ Digital"}}
{"title":"Compact Positive Displacement Flowmeter Spiral Vortex Design","imgUrl":"https:\/\/img.chinax.com\/nimg\/23\/11\/be9f5b6bc28dfd0096d8de5c855e-200x200-1\/compact_positive_displacement_flowmeter_spiral_vortex_design.jpg","attrs":{"Fluid Type":"Liquids including viscous fluids","Connection Type":"Flanged, threaded, or sanitary connections","Installation Orientation":"Horizontal or vertical","Brand Name":"QINWEIYB"}}
The Oval Gear Flowmeter Is Suitable For Viscous Fluids Due To Its High Pressure Resistance
The oval gear flowmeter is a high-precision volumetric flow measurement instrument, also commonly known as the "Oval Gear Flowmeter". It measures the flow by periodically rotating a pair of meshing oval gears driven by fluid pressure, dividing the fluid into fixed volume units for measurement.
Key Components
Elliptical gears: Usually made of stainless steel (316L), cast steel or Hastelloy, they are suitable for different corrosive media and pressure requirements. High-precision models have a hard alloy coating on the surface to reduce wear.
Sealing coupling: Transmits the rotation of the gears to the counter, supporting mechanical pointer display or electronic signal output (such as 4-20mA, RS485).
Temperature compensation module: Some intelligent products integrate this module to correct the influence of temperature changes on the volume of the medium.
Core Advantages
High Precision: Typical accuracy can reach ±0.5%, and some high-end models can achieve ±0.2%, suitable for trade settlement.
High Viscosity Adaptability: The higher the medium viscosity, the smaller the gear gap leakage, and the lower the measurement error. The measurable viscosity range is 0.3 to 8 mPa・s (standard type), and special models can reach 200 mPa・s.
Direct Reading, No External Energy Required: The mechanical dial can directly display the cumulative flow without the need for power supply to operate (very convenient for local indication).
Unaffected by Flow State: The measurement principle is volumetric, insensitive to the flow velocity distribution at the inlet, and does not require long straight pipe sections before and after.
Wide Range Ratio: The range ratio (the ratio of maximum flow to minimum flow) is relatively wide, typically reaching 10:1.
Technical parameter range
Diameter: DN10 to DN150mm. Small diameter models (such as 4mm) are suitable for micro-liquid control.
Pressure rating: Cast iron type 1.0 to 1.6MPa, cast steel type up to 6.4MPa, and high-pressure type up to 9.6MPa.
Temperature range: -20℃ to +100℃ (standard type), high-temperature type requires special heat dissipation design.
Output signal: Mechanical counter, pulse output, 4-20mA analog signal and Modbus/HART communication protocol.
Typical application scenarios
Due to its characteristics, the elliptical gear flowmeter is often used in the following fields:
Petrochemical industry: Precise measurement of crude oil, heavy oil, diesel, lubricating oil, and asphalt.
Food and pharmaceutical industry: Syrup, honey, chocolate, edible oil, dairy products, and additives.
Chemical industry: Resin, solvents, polymers, and chemical raw materials.
Shipbuilding: Measurement of fuel consumption.
Others: Any high-viscosity scenarios that require high-precision volume measurement and have clean media.
The elliptical gear flowmeter is a classic volumetric flowmeter that achieves high-precision measurement through mechanical means. It plays an irreplaceable role in the volume trade settlement and process control of high-viscosity, clean fluids. Despite its strict requirements for fluid cleanliness and the existence of pressure loss, its outstanding accuracy and viscosity-insensitive characteristics ensure its continued importance in specific industrial fields.
