NOIKE-AH Cast Steel Oval Gear Flow Meter

Cast Steel Oval Gear Flow Meter | Positive Displacement Flow Meter

Brand: NOIKE-AH
Model:‌ NK400

Specification

Product Overview

The Cast Steel Oval Gear Flow Meter is a positive displacement flow meter designed for high-accuracy liquid flow measurement. By measuring a fixed volume of liquid during each gear rotation, it provides reliable and repeatable flow measurement for a wide range of industrial applications.

Although traditional mechanical models have been widely used for many years, modern versions are commonly equipped with LCD displays and digital signal outputs for easier integration into industrial automation systems.

Why Choose the Cast Steel Oval Gear Flow Meter?

Selecting a positive displacement flow meter is beneficial when accurate volumetric measurement is required. The Cast Steel Oval Gear Flow Meter offers the following advantages:

High-precision positive displacement measurement
Excellent repeatability for stable long-term performance
Multiple housing materials available for different applications
Various display and output options for automation systems
Compact structure for easy installation and maintenance
Suitable for high-pressure operating conditions
Supports centralized monitoring and industrial control systems
Customizable versions for special operating environments
Optional insertion type for large-diameter pipelines with low pressure loss

Working Principle

The flow meter consists of a precision metering chamber containing a pair of oval gears.

As liquid flows through the meter, the pressure difference between the inlet and outlet causes the oval gears to rotate. Each complete rotation traps and transfers a fixed volume of liquid within the crescent-shaped chamber. The total flow volume is calculated from the number of gear rotations multiplied by the displacement volume of each rotation, providing accurate volumetric flow measurement.

Product Applications

The Cast Steel Oval Gear Flow Meter is suitable for liquid flow measurement in industries including:

Chemical processing
Petroleum
Pharmaceutical manufacturing
Power generation
Metallurgy
Food processing

Product Features

Positive displacement flow measurement
High measurement accuracy
Excellent repeatability
Compact structure
Easy installation and maintenance
Multiple material options
Multiple display configurations
Supports pulse, analog, and communication outputs
Suitable for centralized monitoring and automatic control systems
High-pressure design without body perforations
Customized versions available for special operating conditions
Optional insertion-type design for large pipelines

Technical Specifications

Parameter	Specification
Measurement Principle	Positive Displacement (Oval Gear)
Materials	Cast Iron (Type A), Cast Steel (Type E), Stainless Steel (Type B)
Display Options	Analog Pointer Totalizer, Reset Function, LCD Display
Output Signals	Pulse, 4–20 mA, RS485
Accuracy	Standard: ±1%R or ±0.5%R High Accuracy: ±0.2%R
Repeatability	0.05%–0.2% (Short-Term)
Frequency Signal	3–4 kHz
Rangeability	1:20 (Medium/Large Sizes) 1:10 (Small Sizes)
Optional Versions	Low Temperature, Bidirectional, Downhole, Sand-Mixed Fluid, Insertion Type

Typical Application Example

In industrial liquid transfer systems, accurate flow measurement is essential for process monitoring and production management. The Cast Steel Oval Gear Flow Meter is commonly installed on liquid transfer pipelines where stable volumetric measurement is required. By providing pulse, 4–20 mA, or RS485 outputs, the flow meter can be connected to flow totalizers, PLCs, or monitoring systems for centralized data collection, automated control, and process supervision.

Frequently Asked Questions

What type of liquids can this flow meter measure?

The Cast Steel Oval Gear Flow Meter is designed for industrial liquid flow measurement and is commonly used in chemical, petroleum, pharmaceutical, metallurgy, power generation, and food processing industries.

What output signals are available?

The flow meter supports Pulse, 4–20 mA, and RS485 outputs for integration with industrial control and monitoring systems.

What material options are available?

Three standard body materials are available:

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

Can the flow meter be customized?

Yes. Customized versions are available for applications such as low-temperature service, bidirectional measurement, downhole applications, sand-containing fluids, and large-diameter insertion installations.

Summary

The Cast Steel Oval Gear Flow Meter is a high-precision positive displacement flow meter designed for accurate industrial liquid measurement. With multiple material options, digital communication outputs, excellent repeatability, and customizable configurations, it is suitable for chemical, petroleum, pharmaceutical, food, power generation, and metallurgy applications.