Product Overview

The NOIKE-AH Oval Gear Flow Meter is a positive displacement (PD) flow meter designed for accurate liquid flow measurement. It measures flow by using two precision oval gears that rotate under the pressure difference between the inlet and outlet, displacing a fixed volume of liquid with every rotation.

This flow meter is particularly suitable for high-viscosity liquids, low-flow applications, and precision liquid metering. Multiple display and signal output options make it suitable for both local indication and industrial automation systems.

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Why Choose This Oval Gear Flow Meter?

Choosing the right flow meter is essential for achieving accurate and reliable liquid measurement.

The NOIKE-AH Oval Gear Flow Meter offers several practical advantages:

• Positive displacement measuring principle for high measurement accuracy
• Suitable for high-viscosity liquids and low-flow applications
• Excellent repeatability for stable long-term measurement
• Multiple housing materials available for different media
• Various signal outputs including Pulse, 4–20mA and RS485
• Optional LCD digital display for local monitoring
• Compact structure for easy installation and maintenance
• Customized versions available for special industrial requirements

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Operating Principle

The flow meter contains a measuring chamber with two precision oval gears.

When liquid enters the chamber, the pressure difference between the inlet and outlet drives the gears to rotate. Every complete rotation displaces a fixed volume of liquid.

The total flow volume is calculated by multiplying the number of gear rotations by the fixed displacement volume, providing highly accurate volumetric flow measurement.

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Product Applications

Suitable for flow measurement in industries including:

• Chemical Industry
• Petroleum Industry
• Pharmaceutical Manufacturing
• Power Plants
• Metallurgy
• Food Processing

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Product Features

High Measurement Accuracy

• Standard accuracy:
  • ±1%R
  • ±0.5%R
• Optional high-precision version:
  • ±0.2%R

Excellent Repeatability

Short-term repeatability:

• 0.05%–0.2%

Suitable for applications requiring stable measurement and periodic calibration.

Multiple Material Options

Available body materials include:

• Cast Iron (Type A)
• Cast Steel (Type E)
• Stainless Steel (Type B)

Flexible Display Options

Optional display types include:

• Mechanical pointer totalizer
• Resettable counter
• LCD digital display

Multiple Output Signals

Supports:

• Pulse Output
• 4–20mA Analog Output
• RS485 Communication

Suitable for integration with:

• Flow totalizers
• PLC systems
• Industrial automation
• Centralized monitoring systems

Wide Measuring Range

Rangeability:

• 1:20 (medium and large sizes)
• 1:10 (small sizes)

Compact Structure

• Easy installation
• Easy maintenance
• High-pressure design without body perforation

Customization Available

Special versions can be provided for specific applications, including:

• Low-temperature type
• Bidirectional flow type
• Downhole type
• Sand-containing media
• Insertion type for large pipelines

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Technical Specifications

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Performance Parameters:

The sizes are above are for the standard products. We also accept customization based on the customers’site demand.

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Typical Applications

This positive displacement flow meter is suitable for measuring:

• High-viscosity oils
• Fuel oil
• Lubricating oil
• Chemical liquids
• Industrial process liquids
• Precision liquid metering systems

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Frequently Asked Questions (FAQ)

What liquids are suitable for an oval gear flow meter?

It is suitable for many industrial liquids, especially high-viscosity media such as oils, chemicals, and process liquids.

What output signals are available?

The flow meter supports Pulse output, 4–20mA analog output, and RS485 communication, depending on the selected configuration.

Can it be integrated into PLC systems?

Yes. The Pulse, 4–20mA, and RS485 outputs allow integration with PLCs, flow totalizers, and industrial control systems.

Is it suitable for high-pressure applications?

Yes. The flow meter features a compact structure designed for high-pressure working conditions.