Product
Oval gear flow meter digital
Oval gear flow meter is a positive displacement meter for crude oil, diesel and petrol. It delivers high precision with wide measuring range, easy operation and maintenance for various industrial liquid measurement.
Category:
Product
Flow meter
Gear Flowmeter
- Description
-
Core Overview
Oval gear flowmeter is a target word count accumulated round devices and light devices to zero volume flow meter is widely used in various industrial areas of the liquid flow control, applicable to all types of liquid measurements, such as crude oil, diesel , petrol and so on, with great range and high precision, convenient use and maintenance of the characteristics of different materials selected to meet the petroleum, chemical, pharmaceutical, food, metallurgy, electricity, transportation and other fields of liquid flow measurement.
Specification
Parameter
Specification
Meter Type
Positive Displacement Oval Gear Flow Meter
Pipe Size
DN10 – DN200 (1/2" – 8")
Accuracy Class
Standard: ±0.5%; Optional high-precision: ±0.2%
Repeatability
≤ 0.1%
Working Pressure
1.6 MPa (cast iron body); up to 6.3 MPa (cast steel body); 1.6–2.5 MPa (stainless steel body)
Medium Temperature
Standard: -20℃ ~ +60℃
High-temperature version: up to 200℃ (with cooling radiator)
Applicable Viscosity
0.3 – 2000 mPa·s (especially designed for high-viscosity liquids)
Wetted Materials
- Body: Cast Iron, Cast Steel, 304/316L Stainless Steel, Aluminum Alloy
- Gear: Cast Iron, Stainless Steel, Aluminum Alloy, Engineering Polymer
Output Options
Mechanical counter, Pulse output, 4-20mA analog signal, RS485 Modbus
Explosion-proof Rating
Exd II BT4
Protection Grade
IP65
Connection
Flange mount; GB/ANSI/DIN/JIS flange standards available
Straight Pipe Requirement
None required (no upstream/downstream straight pipe needed)
Working Principle
Flowmeter is installed in the metering tank and the measurement of a pair of oval box gear, with the upper and lower cover an early Lunar sealed cavity (due to rotation of the gear, so sealing is not an absolute) as a unit of emissions. When measured by the pipe into the liquid flow meter, due to pressure generated by the Import and Export Department to promote a pair of differential gears for rotation, the constant measurement by cavity after the beginning of the Lunar liquid delivery to the exit, elliptical gear with each revolution time displacement is the product of four times the measured volume of liquid flow
Key Features
● High Accuracy: Standard accuracy ±0.5%, optional ±0.2% grade for formal trade metering
● Wide Viscosity Adaptability: Works reliably with liquid viscosity from 0.6 mPa·s up to 1000 mPa·s
● Robust & Durable: Cast iron or stainless steel body with hardened gears, wear-resistant for long-term operation
● Flexible Output: Mechanical register display, pulse output, 4-20mA analog signal and RS485 Modbus available
● No Straight Pipe Required: Does not need upstream/downstream straight pipe sections, suitable for compact pipeline layout
● Customizable Options: Flange standards, material grades and explosion-proof versions can be customized
Applications
● Oil & Gas: Crude oil, diesel, kerosene pipeline metering and custody transfer
● Petrochemical: Lubricating oil, heavy oil, resin, solvent and chemical liquid dosing
● Marine & Power Plant: Fuel oil delivery and lubrication system monitoring
● Food & Beverage: Edible oil, syrup, honey and other high-viscosity food liquids
● Industrial Batching: Paint, coating, adhesive and chemical batching & filling systems

Ordering Guide
To help us recommend the most suitable model, please provide the following information when making an inquiry:
- Pipe diameter and flange connection standard
- Measured medium and its approximate viscosity
- Working pressure and temperature range
- Required flow rate range
- Output signal type (mechanical display / 4-20mA / pulse / RS485)
- Special requirements (explosion-proof, high temperature, material upgrade)
Need more information?
Contact us to learn more about our flow meters, solutions, and services
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The company's product range includes flow meters, level gauges, and temperature, pressure, and display instruments.