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KEM-KUEPPERS ZHM-ST High Precision Gear Flow Meter is a positive displacement flow meter designed for accurate and stable measurement of liquid flow in industrial processes. At Rossonix Co., Limited, an ISO9001 certified supplier with 11-50 employees and over US$5 million annual exports, we deliver this reliable flow measurement solution to customers worldwide. With our established export network and overseas office, we ensure professional service from inquiry to after-sales support.
This high precision gear flow meter uses two precision-machined gears that rotate as liquid flows through the meter. Each rotation displaces a fixed volume of liquid, allowing the meter to calculate flow rate and totalized flow with excellent repeatability. The ZHM-ST series is widely used in applications such as hydraulic systems, lubrication circuits, fuel dispensing, and chemical dosing where consistent accuracy is essential.
Key Features
Gear-based positive displacement principle for true volumetric flow measurement.
High precision and repeatable performance across a wide range of flow rates.
Compact, sturdy construction that withstands industrial environments.
Multiple wetted material options, including aluminum and stainless steel, to suit different liquid compatibility.
Flexible mounting and connection arrangements to simplify installation.
Optional output configurations such as pulse, analog, or digital signals for integration into control systems.
Low pressure drop, which helps reduce energy consumption in the process.
Capable of handling a range of fluid viscosities, from low-viscosity solvents to high-viscosity lubricants.
Designed for long service life with minimal maintenance requirements.
Backed by Rossonix's experience in exporting flow meters to global markets.
Product Structure and Working Principle
The flow meter consists of a measuring chamber containing two synchronized gear wheels, sealed by precision clearances. As liquid enters the inlet, the pressure difference causes the gears to rotate, trapping fixed volumes of liquid between the gear teeth and the chamber wall. The rotation of the gears is detected by a sensing mechanism and converted into frequency or digital output that is proportional to the flow rate. The simple yet effective design delivers stable performance and is less sensitive to viscosity changes compared to other flow meter technologies.
Applications
Hydraulic oil flow measurement and monitoring in mobile and industrial machinery.
Lubrication systems for engines, compressors, and gearboxes.
Fuel consumption measurement for engines and burners.
Chemical and petrochemical process lines with compatible media.
Pharmaceutical and food industries (with appropriate wetted materials and cleaning procedures).
Test stands and calibration equipment requiring precise flow control.
Technical Specifications
| Measurement principle | Positive displacement gear flow meter |
| Model series | ZHM-ST |
| Media | Clean, compatible liquids; viscosity range depends on model |
| Flow range | Configurable based on model selection and application |
| Wetted materials | Optional: aluminum, stainless steel, or special alloys (available upon request) |
| Output options | Pulse, analog, or digital signals (optional) |
| Process connections | Various sizes and thread standards available upon request |
| Operating pressure | Dependent on model and body material |
| Operating temperature | Dependent on selected materials and sealing options |
| Accuracy class | High precision; exact values provided in datasheet |
Key Advantages and Customer Benefits
Improve process accuracy: Reliable flow measurement helps maintain product quality and consistency.
Reduce downtime: Durable parts and simple maintenance routines minimize operational interruptions.
Lower total cost of ownership: Robust construction and long service life reduce replacement frequency.
Easy system integration: Optional electronic outputs allow connection to PLC, SCADA, or digital displays.
Versatile applicability: Suitable for a wide range of liquids and operating conditions.
Global support: Rossonix offers export documentation, packaging, and logistics to facilitate international procurement.
Company Quality Assurance and Export Strength
Since 2011, Rossonix Co., Limited has been committed to providing quality industrial instruments and components to customers worldwide. We operate under ISO9000/ISO9001 quality management standards, ensuring consistent processes from sourcing to inspection. Our location in Shenzhen, Guangdong, China provides access to a strong supply chain and convenient shipment options from Shenzhen, Hong Kong, and Europe. With an annual export value of US$5 million to US$10 million and a dedicated overseas office, we are equipped to serve clients across North America, South America, Eastern Europe, Oceania, the Middle East, East Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, and the domestic market. Our team of 11-50 professionals is experienced in handling international orders and providing responsive communication.
Why Choose Rossonix as Your Flow Meter Supplier
Established export credibility with strong supplier relationships.
Multilingual sales and after-sales support.
Flexible shipment from Shenzhen, Hong Kong, or Europe.
Rigorous inspection on every order to maintain high quality.
Competitive pricing through an optimized supply chain.
Frequently Asked Questions (FAQ)
Q1: What kinds of liquids can be measured with the ZHM-ST gear flow meter?
A1: The ZHM-ST is suitable for many clean, non-abrasive liquids, including hydraulic oils, lubricants, diesel, light chemicals, and a variety of process fluids. The compatibility depends on the wetted materials and the liquid properties. Contact us with your fluid details for a proper selection.
Q2: Is the flow meter accurate for high-viscosity liquids?
A2: Yes, gear flow meters are generally effective for high-viscosity fluids because the positive displacement design provides volumetric measurement regardless of viscosity, within certain limits. The acceptable viscosity range varies with the model and size, and our team can assist you in choosing the right version.
Q3: What options are available for output signals?
A3: The meter can be equipped with different output modules, such as pulse output, analog 4-20 mA, or digital communication protocols, depending on the selected configuration. Please specify your required interface so we can recommend the correct options.
Q4: Does the flow meter need to be calibrated before use?
A4: The meter is factory calibrated and ready for installation. For some high accuracy applications, an on-site verification may be useful. Recalibration intervals depend on usage, media, and manufacturer recommendations. We can provide calibration guidance and documentation.
Q5: Can I use this flow meter for chemical liquids?
A5: It depends on the chemical compatibility of the wetted materials and seals. Aluminum is typically for oil-based liquids; stainless steel is often chosen for corrosive fluids. Please provide the chemical name and concentration, and we will evaluate the compatibility or offer alternative materials.
Q6: What is the recommended installation orientation?
A6: Generally, the flow meter can be installed in any orientation, but a horizontal pipe with the meter above the pipe is often preferred to ensure the chamber is free of air pockets. Vertical installation with upward flow can also be acceptable. Refer to the installation manual for exact mounting requirements.
Q7: How do I determine the correct flow range for my application?
A7: The flow range should be selected so that the expected normal flow rate falls within the meter's optimal measurement range, typically between 20% and 80% of its maximum capacity. Our team can help you calculate this based on your required flow rate and viscosity.
Q8: What are the delivery options and lead time?
A8: For standard models, the lead time is usually short, and we can ship from Shenzhen or Hong Kong. For customized versions, the lead time depends on the configuration. We also have European export routes. Please contact us for a detailed quotation with delivery terms for your location.
Contact Rossonix Today
With a commitment to quality, competitive pricing, and dependable export service, Rossonix Co., Limited is your trusted partner for the KEM-KUEPPERS ZHM-ST high precision gear flow meter. Let us help you optimize your fluid measurement process with a solution tailored to your application. Send us your inquiry now to receive a prompt response and professional recommendation.
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