Product Overview

The FG Gear Flow Meter is a positive displacement flow meter designed for high-precision volumetric flow measurement of lubricating and viscous liquids. The measuring unit consists of precision gears installed inside a closely matched housing. As liquid flows through the meter, the gears rotate and generate pulse signals that are proportional to the flow rate.

The FG series provides high accuracy, excellent linearity, fast response, and high resolution, making it suitable for continuous flow monitoring, batching, metering, and industrial process control.

The flow meter is available in gray cast iron and stainless steel, with additional material options available according to application requirements.

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Working Principle

The FG Gear Flow Meter operates using the positive displacement principle. Liquid flowing through the measuring chamber drives two precision gears to rotate. The gear movement is detected by two non-contact pulse sensors, with each gear tooth generating a pulse signal.

The output frequency is proportional to the volumetric flow rate, allowing accurate calculation of both instantaneous and accumulated flow.

Because the measuring chamber is manufactured with high precision, the flow meter delivers excellent measurement accuracy and repeatability for compatible lubricating liquids.

Note:

• Suitable for liquids with lubricating properties.
• Not suitable for non-lubricating media such as water.
• Not recommended for liquids containing solid particles.
• Gas mixed into the liquid may reduce measurement accuracy.

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Product Features

• Positive displacement gear measuring principle
• High measurement accuracy and excellent linearity
• High-resolution pulse measurement
• Fast response time
• Non-contact pulse detection
• Suitable for lubricating and viscous liquids
• Wide flow measurement range
• Wide viscosity range
• Wide operating pressure range
• Multiple material options
• Multiple bearing configurations available
• Optional explosion-proof versions
• Custom configurations available for different applications

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Technical Specifications

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Advantages

High Measurement Accuracy

The precision gear structure provides accurate volumetric flow measurement with excellent linearity.

Fast Dynamic Response

The high-resolution pulse output enables rapid detection of flow changes, making the meter suitable for process control applications.

Wide Operating Range

The flow meter supports a broad range of flow rates, viscosities, temperatures, and pressures for various industrial applications.

Flexible Configuration

Available in different housing materials, bearing options, and explosion-proof versions to meet diverse installation requirements.

Reliable Performance

The contactless signal acquisition system reduces mechanical wear while maintaining stable long-term measurement performance.

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Applications

The FG Gear Flow Meter is suitable for precision liquid measurement in many industrial sectors.

Measurement & Metering

• Precision liquid metering
• Flow monitoring
• Batch control
• Volumetric measurement

Hydraulic Systems

• Hydraulic oil monitoring
• Lubrication systems
• Industrial hydraulic equipment

Process Automation

• Process monitoring
• Flow regulation
• Industrial automation systems

Automotive Industry

• Lubricating oil measurement
• Fuel system testing
• Hydraulic circuit monitoring

Plastics Industry

• Resin transfer
• Polymer processing
• Additive dosing

Compatible Liquids

• Gasoline
• Mineral oils
• Paints
• Grease
• Resins
• Other lubricating liquids with suitable viscosity

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Typical Application Case

Lubricating Oil Flow Monitoring in Hydraulic Equipment

In hydraulic machinery, maintaining a stable lubricating oil supply is essential for equipment reliability and service life. The FG Gear Flow Meter measures the oil flow using a precision positive displacement gear mechanism, providing high-resolution pulse signals proportional to the flow rate.

Its fast response time and excellent repeatability allow real-time monitoring of lubrication performance, helping improve process stability and equipment operation in industrial hydraulic systems.

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Frequently Asked Questions (FAQ)

1. What measuring principle does the FG Gear Flow Meter use?

It uses the positive displacement gear measuring principle.

2. What liquids can be measured?

It is designed for lubricating liquids, including mineral oils, gasoline, paints, greases, resins, and other compatible viscous media.

3. Can it measure water?

No. The FG Gear Flow Meter is not suitable for non-lubricating media such as water.

4. Can it measure liquids containing solid particles?

No. Solid particles may interfere with gear rotation and affect measurement accuracy.

5. Why does gas mixed in the liquid affect measurement?

Entrained gas changes the actual displaced liquid volume and may result in measurement errors.

6. What output does the flow meter provide?

The gear rotation is detected by two non-contact pulse sensors that generate a frequency signal proportional to the flow rate.

7. Is an explosion-proof version available?

Yes. Explosion-proof configurations are available according to application requirements.

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Optional Services

• Explosion-proof versions
• Customized material selection
• Bearing configuration options
• OEM & ODM manufacturing
• Technical application support
• Installation guidance

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Industries Served

• Hydraulic Systems
• Process Automation
• Chemical Processing
• Automotive Manufacturing
• Plastics Industry
• Lubrication Systems
• Industrial Metering
• Process Control
• Manufacturing Equipment