Henan Zhongce Sensor Miniature Electromagnetic Flowmeter: Designed for Precise Measurement of Small Flow Rates

In process flows across industries such as fine chemicals, pharmaceuticals, food and beverage, and water treatment, flow measurement of conductive liquids in small-diameter pipelines is a common technical requirement. For such applications, the corrosion resistance of the measuring instrument, its ability to respond at low flow rates, and its installation flexibility are critical factors in equipment selection. Henan Zhongce Sensing The newly launched series of miniature electromagnetic flowmeters draws on proven industry design and manufacturing expertise, providing a technically reliable solution for precise measurement of low flow rates.

I. Technical Features of Micro and Miniature Electromagnetic Flow Meters

For small-diameter pipelines ranging from DN6 to DN50, conventional mechanical flow meters may suffer from pressure loss or wear of moving parts. Electromagnetic flow meters operate on Faraday’s law of electromagnetic induction and feature a flow tube free of any obstructive elements, exhibiting the following fundamental characteristics:

No pressure loss and corrosion resistance : Since there are no moving parts inside the measuring tube, no additional pressure loss is incurred as the fluid flows through. When paired with corrosion-resistant lining and electrode materials, it is suitable for a wide range of conductive liquids.

Low-Flow Measurement Capability According to the principle of electromagnetic induction, the flow velocity is directly proportional to the induced electromotive force. By employing optimized excitation and signal-processing techniques, modern electromagnetic flowmeters can stably measure fluids at very low flow velocities, such as 0.3 m/s.

Measurement stability : In principle, variations in fluid properties such as density, viscosity, and temperature (within the permissible range) do not affect the volumetric flow measurement results of electromagnetic flowmeters, thereby ensuring measurement consistency.

II. Core Parameters and Selection of Henan Zhongce’s Miniature Electromagnetic Flowmeter

This product series launched by Henan Zhongce Sensing (refer to the ZTFM-small series design specifications) is designed and selected in strict accordance with relevant standards, such as JB/T 9248, and provides clear technical specifications in the following areas:

Caliber and Flow Range ：
The product line covers nominal diameters from DN6 to DN50. According to the flow tables in the catalog, each diameter corresponds to a specific flow range. For example, the flow range for DN6 is 0.5 ~ 8.5 L/min, while the flow range for a DN50 pipe diameter is 4 ~ 900 L/min.

Corrosion-resistant material – PEEK lining ：
The standard configuration for the measuring tube (lining) of this product series is PEEK (Polyether Ether Ketone) Specialty Engineering Plastic . PEEK material possesses excellent Chemical corrosion resistance and Mechanical Properties It can withstand the corrosive attack of a wide range of aggressive fluid media while providing structural strength to ensure the fabrication and forming of small-diameter measuring tubes. Electrode materials are available in various grades, including 316L stainless steel, Hastelloy HC/HB, titanium, and others, to accommodate the diverse chemical properties of different liquids.

Accuracy Standard ：
The product clearly specifies the measurement accuracy. Under reference conditions, the basic accuracy class of the pulse output is ±0.5% (when the flow velocity is greater than 0.6 m/s); optional ±0.2% of high-accuracy class (when flow velocity exceeds 1.0 m/s). This graded accuracy labeling provides users with a clear basis for selecting instruments that meet their specific control requirements.

Diversified process connections ：
To accommodate various industrial piping installation conditions, this product series offers a variety of process connection options:

Threaded connection : As a basic type, it is suitable for connecting smaller-diameter pipelines.

Clamp connection : Quick installation and easy disassembly for cleaning, making it particularly suitable for the hygienic installation requirements of the food, beverage, and pharmaceutical industries.

Flange connection : Conforms to traditional industrial pipeline connection practices and has a wide range of applications.

Flexible output signal configuration ：
The product’s intelligent converter supports multiple signal output modes. Depending on the selected configuration, users can choose:

Two channels of high- or low-level active digital switch signals output (suitable for pulse, frequency, flow direction, or upper/lower limit alarms).

One digital output channel and one analog output channel (4–20 mA).

RS485 Modbus communication mode for easy integration with industrial automation control systems.
This modular I/O design enables the flow meter to better align with control requirements at different levels.

III. Installation and Usage Precautions

To ensure measurement accuracy and long-term stable operation, the installation must comply with the guidelines provided in the sample:

Full-pipe requirement The sensor’s measuring tube must always be completely filled with fluid to ensure measurement accuracy; therefore, installation at the highest point of the pipeline or in locations where free drainage may occur should be avoided.

Requirements for the Straight Pipe Section To ensure flow stability, it is recommended that the upstream straight pipe section be no less than 3 times the pipe diameter (3D), and the downstream section no less than 1D.

Reliable grounding : The flowmeter must be properly grounded (liquid-contact grounding) to eliminate electromagnetic interference and ensure signal stability.

Avoid interference : The installation location should be kept away from strong magnetic fields and sources of severe vibration.

IV. Typical Application Scenarios

Combining its PEEK-lined corrosion resistance, capability for measuring small-diameter flows, and versatile connection options, this flowmeter is suitable for the following applications:

Fine chemicals : Used for the precise metering or addition control of small quantities of corrosive liquids, such as catalysts and additives.

Biopharmaceuticals : Measure the flow rates of water for injection, purified water, and pharmaceutical solutions to meet GMP requirements for cleanliness and accuracy.

Food and Beverage : Monitor the flow rate of media such as fruit juices, beverages, and cleaning solutions during processes like ingredient mixing and filling.

Water treatment : Used for the quantitative dosing control of flocculants and disinfectants in dosing systems.

V. Product Selection Guide

Henan Zhongce Sensing can provide users with standardized product selection support. Its product coding rules are clear; for example: ZTFM-small-50-FC-16-316Ti-HLS-02-DK It includes key information such as the nominal diameter (DN50), process connection (flange, made of 316 stainless steel), nominal pressure (1.6 MPa), electrode material (316Ti), input/output configuration, cable length, and version type (with LCD display). Users can refer to the selection chart to determine the specific model based on their actual operating conditions.

Conclusion

The Henan Zhongce miniature electromagnetic flowmeter is designed in accordance with well-defined industrial standards and specific material and performance specifications, aiming to provide a structurally reliable and flexibly configurable solution for measuring conductive liquids in small-diameter pipelines. If you are planning a related project, please refer to the product technical data sheet and select and design the instrument based on your actual process conditions.

Contact number: 19943999277, Engineer Ding