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Help CenterKEM KUPPERS Gear Flow Meter ZHM Series High Precision Gear Flow Meter
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Precision Flow Measurement – KEM Kuppers ZHM Series Gear Flow Meter
Based in Shenzhen, Guangdong, China, Rossonix Co., Limited has been dedicated to providing reliable industrial measurement and fluid control solutions since 2011. With annual export value of US$5–10 million, an overseas office, and a responsive team of 11–50 employees, we serve customers across North America, South America, Eastern Europe, Oceania, the Middle East, Western Europe and Asia. Our commitment to quality, backed by ISO9001 and ISO9000 certified management systems, enables us to deliver products that meet the most demanding process requirements. Today, we are pleased to introduce the KEM Kuppers Gear Flow Meter ZHM Series – a high-precision positive displacement gear flow meter designed for accurate, repeatable and long-lasting flow monitoring in industrial systems.
The ZHM Series uses a sturdy gear displacement mechanism to convert fluid flow into a clear, measurable pulse signal. Because the measuring principle relies on positive displacement, it provides excellent repeatability and linearity even at relatively low flow rates or when handling fluids with changing viscosities. This makes it a highly dependable solution for hydraulic oil, lubricants, fuel, and similar low-to-medium viscosity fluids in many production, test-stand, and machinery applications.
Working Principle
As liquid passes through the meter, it turns precision-matched gears inside the measuring chamber. The rotation of these gears is directly proportional to the volume of fluid passing through the meter. Magnetic pick-ups or optional sensor systems detect the gear rotation and generate a frequency output signal that can be read by PLCs, counters, and flow computers. This dry, non-intrusive detection method minimizes internal wear and helps maintain stable performance over a long service life.
Key Features and Benefits
High precision and repeatability: The ZHM Series delivers reliable measurement accuracy for production, hydraulic systems, and process control, with performance that is carefully matched to each application.
Positive displacement principle: Measurement is less influenced by flow profile, turbulence, or viscosity variations compared with some velocity-based flowmeters.
Wide flow range: Multiple meter sizes and optional configurations allow the ZHM series to cover a broad range of flow capacities, from compact low-flow circuits to larger industrial hydraulic systems.
Durable industrial construction: The meter body is manufactured from high-grade materials selected for strength, wear-resistance, and compatibility with common industrial fluids. Material options are available upon request.
Simple pulse output signal: The sinusoidal or square-wave pulse output can be directly connected to digital displays, PLC modules, or data acquisition systems for easy integration.
Flexible mounting configurations: Flanged, threaded, or customized connection options can be provided depending on the specific model and installation requirements.
Low pressure drop: The optimized gear chamber design keeps pressure loss low in most applications, preserving system efficiency.
Minimal maintenance: With no complicated electronics inside the flow path and a robust mechanical design, the ZHM series requires only routine inspection and periodic cleaning in normal service.
Technical Specifications
| Parameter | Description |
| Measurement principle | Positive displacement using precision gears |
| Suitable media | Hydraulic oils, lubricating oils, fuels, and other compatible fluids |
| Accuracy | High precision; exact accuracy depends on model, fluid viscosity, and installation conditions |
| Output signal | Pulse/frequency signal (magnetic pick-up or optional sensor) |
| Mounting type | Flange, threaded, or customized, depending on model |
| Viscosity range | Wide range; especially suited for medium to high viscosity fluids (verify with our technical team) |
| Temperature range | Varies by model and seal material; consult specification sheet |
| Pressure rating | Depends on selected model; confirm before ordering |
| Options | Custom connections, sensor types, and calibration options available upon request |
Why Choose the ZHM Series for Your Application?
Accurate hydraulic and lubrication monitoring: The meter performs excellently in hydraulic return lines, pressure lines, lube oil circuits, and test benches where accurate flow verification is critical.
Better process control: Real-time pulse signals allow operators to monitor machine load, detect anomalies, and optimize equipment performance.
Cost-effective reliability: The simple construction reduces the risk of electronic failure in dirty or flammable environments, lowering downtime and maintenance costs.
Flexible integration: Whether you need a basic rate indicator or full data recording, the output can be paired with a wide range of instrumentation.
Customizable configuration: Depending on your flow range, connection type, and fluid compatibility, our engineers can recommend or adapt the ZHM unit to meet your requirements.
Typical Applications
Hydraulic power units and mobile machinery
Machine tool lubrication systems
Test stands for pumps and motors
Fuel measuring and dosing systems
Industrial fluid transfer and process monitoring
Oil circulating and cooling systems
Installation and Maintenance
For best performance, the ZHM Series should be installed with proper straight upstream and downstream piping according to the instruction manual. Ensure that the direction of flow matches the arrow on the meter body and that the system is free from excessive air or gas bubbles before starting measurement. The meter has no internal moving parts that require regular adjustment, but it is good practice to inspect the seals and connection fittings periodically. If the fluid contains solid particles or debris, a suitable upstream filter or strainer is strongly recommended to protect the precision gears from damage.
Quality Assurance and After-Sales Support
At Rossonix Co., Limited, we understand that flow measurement is essential for process safety, efficiency, and product quality. That is why our business processes are aligned with ISO9001 and ISO9000 certified management systems, ensuring every order receives consistent quality control, careful packaging, and transparent communication. Our Shenzhen team is backed by an overseas office, providing faster technical response and support for export customers. With years of experience in the Middle East, Europe, Oceania, North and South America, and Asian markets, we can help guide you in selecting, installing, and commissioning your high-precision gear flow meter.
Frequently Asked Questions
Q1: What types of liquids can the ZHM Series measure? The meter is mainly designed for hydraulic oils, lubricating oils, and compatible fuels. It can also be used with other low to medium viscosity industrial fluids; please check fluid compatibility with our technical team before ordering.
Q2: Can the flow meter be used for high-viscosity fluids? Yes, the positive displacement gear principle works well with medium to high viscosity fluids. The exact viscosity limit depends on the model, before placing an order we recommend confirming your fluid viscosity and flow rate with us.
Q3: What output signal does the ZHM Series provide? The standard version typically provides a pulse/frequency signal generated by a magnetic pick-up. Optional sensor configurations can offer different signal formats to suit your PLC, display, or data acquisition system.
Q4: What is the accuracy of this gear flow meter? The ZHM Series is classified as a high-precision flow meter. The exact accuracy depends on the specific model, calibration, fluid characteristics, and installation conditions. We will provide the relevant accuracy data for your chosen configuration upon request.
Q5: Can the connection size be customized? Several standard connection sizes are available. If your existing piping uses a non-standard thread or flange, custom connection options can be arranged. Please provide your connection details during the inquiry.
Q6: How do I determine the correct meter size for my system? The correct size is based on your required flow rate, fluid viscosity, operating pressure, and pipe dimensions. Our engineers can help select the ZHM model that fits your needs if you share your process parameters.
Q7: Is a filter required before the flow meter? To protect the precision gears from particles, we strongly recommend installing a suitable filter or strainer upstream, especially when the fluid may contain rust, scale, or debris. This helps maintain long-term accuracy and service life.
Q8: Do you provide after-sales technical support? Yes, we provide prompt technical support through email, video consultation, and our overseas office network. Our Shenzhen-based team can assist with installation guidance, troubleshooting, and replacement parts.
Conclusion
Whatever your flow measurement challenge, the KEM Kuppers Gear Flow Meter ZHM Series offers the precision, durability, and flexibility needed for industrial operations. As a trusted export supplier with a solid customer base around the world, Rossonix Co., Limited is here to help you specify the right solution, provide competitive pricing, and deliver on time. We warmly invite you to contact us with your application details or inquiry, and let us support your next project with high-quality flow measurement technology.
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