The KF10 series insert-type Paddlewheel Flow Sensor is another intelligent flow switch and a compact flow sensor. It features small size and easy setup. Built-in intelligent circuitry allows for arbitrary setting of upper and lower flow alarm values. Real-time flow status can be remotely monitored, and all parameters can be set on-site. Its impeller measures the flow rate of the medium passing through, and the data is processed by the sensor’s intelligent circuitry and can be programmed arbitrarily.
| Parameter | Specification |
|---|---|
| Flow Velocity Range | 0.15…6 m/s |
| Temperature Range | 0…100 °C |
| Measuring Bore (Nominal Diameter) | DN25–DN600 |
| Supply Voltage | 12…30 Vdc |
| Output Signal | Switch / Pulse / Analog |
| Communication | RS485 / IO-Link |
| Pressure Rating | 25 bar |
| Repeatability | ±5% of full scale |
| Linearity Accuracy | ±1.0% of full scale (flow) / ±1.5% (temperature) |
| Wetted Parts | |
| — Sensor Body | Stainless steel |
| — O-Ring | FPM (factory default) / EPDM |
| — Impeller | PP (factory default) / PVDF |
| — Bearing / Shaft | High-temperature zirconia ZrO₂ (ceramic), titanium alloy, Hastelloy C |
Generally, the upstream straight pipe section length should be 5 to 10 times the sensor diameter, and the downstream straight pipe section length should be 3 to 5 times the sensor diameter. This ensures stable fluid flow as it passes through the sensor, improving measurement accuracy.
Keep away from strong magnetic and electric field interference sources, such as large motors and transformers, to prevent electromagnetic interference from affecting the sensor’s measurement accuracy and stability.
Avoid installing at the highest or lowest point of the pipe to prevent the accumulation of air bubbles or sediment that could affect the measurement.
If this cannot be avoided, consider installing an air vent or drain valve.
The sensor should be installed in the same direction as the fluid flow. An arrow on the sensor indicates the flow direction.
During installation, ensure the sensor is securely connected to the pipe without looseness.
For measurements of high-temperature, high-pressure, or corrosive fluids, select appropriate sensor materials and installation methods to ensure sensor reliability and safety.
Strictly follow the sensor’s electrical wiring diagram to ensure correct wiring.
Ensure proper grounding to prevent electrical interference and static electricity buildup.
For explosion-proof environments, use sensors that meet explosion-proof requirements and install them according to explosion-proof electrical installation specifications.
After installation, debugging and calibration should be performed to ensure the sensor’s measurement accuracy and performance meet requirements. Calibration can be performed by comparing with a flow meter of known accuracy or using a standard flow device. Adjust sensor parameters appropriately, such as range and zero point, according to actual conditions.
| KF10- | A3 | – | – | – | Description |
| KF10- | KF10 series impeller (paddle-wheel) flow sensor | ||||
| A3 | Two-channel switch / pulse / frequency + analog output | ||||
| SA | Analog (flow / temperature) / switch / pulse / frequency / IO-Link | ||||
| AR | RS485 communication + analog output | ||||
| – | Impeller material: PP (factory default) | ||||
| PV | Impeller material: PVDF | ||||
| – | Shaft: ZrO2 (factory default) | ||||
| B | Shaft: 316L stainless steel | ||||
| C | Shaft: titanium alloy | ||||
| D | Shaft: Hastelloy | ||||
| – | O-Ring: FPM (factory default) | ||||
| EP | O-Ring: EPDM |
Sino-Inst supplies a full range of Paddle Wheel Flow Meters, including local display and split display models. Custom materials are also available, such as PP, PVDF, stainless steel, and brass. The KF10 Paddle Wheel Flow Sensor is the preferred choice for low-cost flow measurement and control. Please feel free to contact our sales engineers for customized solutions.
Zhang Wei, possesses 20 years of experience as an automation instrumentation engineer, specializing in the research, design, installation, commissioning, and maintenance of automation instruments.
Face to various instrument communication protocols (such as Modbus, Profibus, etc.), with solid hardware circuit design and software programming skills (proficient in C language and PLC programming). Has extensive project experience; projects he has led and participated in have all achieved outstanding results, improving product accuracy, reducing costs, and increasing production efficiency.
Possesses excellent communication and coordination skills and a strong team spirit, enabling him to quickly respond to customer needs and provide high-quality automation instrumentation solutions.
