The KF11 series Impeller flow meters are compact flow sensors with a plug-in installation, making them small and convenient. The KF11 series is available in various materials including PP, PVDF, PTFE, SS316L, brass, Hastelloy C, and titanium alloy.
The KF11 series Impeller flow sensors support square wave pulse signals (40-45Hz) at nominal flow rates per m/s. With a pulse converter, they can output 4-20mA. They can also be configured with the KF8100 flow transmitter (controller) for enhanced functions such as instantaneous flow rate, cumulative flow rate display, alarm prompts, 4-20mA output, RS485 communication output, and batch volumetric flow control output.
The five-blade impeller design conforms to fluid mechanics principles, providing uniform force angles and better dynamic balance, ensuring superior linearity and repeatability.
Various Shafts and Bearings
Shafts and Bearings: ZrO2, SS316L, Hastelloy C
Impeller Materials: PTFE, PP, PVDF, ABS
Body Materials: PP with glass fiber reinforcement, ABS, CPVC, PTFE, SS316L, Brass
Actual Flow Calibration
Calibration range: DN10-DN1000. Each sensor undergoes rigorous calibration and quality inspection. Each sensor leaves the factory with a K-coefficient within 2% of the standard value and a repeatability accuracy of 0.5%.
KF11 Series Impeller Flow Meters Technical Specifications
Model: KF11 Impeller Flow Meter
Description: The impeller features a five-blade design made of PP/PVDF/PTFE material, ensuring better dynamic balance and significantly improving the sensor’s linearity and repeatability. Minimum flow velocity: 0.1 m/s. NPN open-collector output, directly transmits to flow transmitters or PLCs, standard square wave signal, maximum transmission distance: 300 m. Applicable diameter: DN25-DN600 (1”-24”). Not suitable for media containing particulate or fibrous impurities.
Diameter Range: DN25-DN600 (1”-24”)
Flow Rate Range: 0.1-8m/s
Linearity: L=±1%
Repeatability: R=±0.5%
Body Material: PP with glass fiber/CPVC
Impeller Material: PP/PVC/PVDF/PTFE
Shaft and Bearings: Al2O3/ZrO2/SS316L/Hastelloy C/Titanium Alloy
O-rings: FPM/EPDM/Fluororubber
Power Supply: DC 5-24V
Protection Rating: IP68
Temperature and Pressure: PP Body: 12.5bar@25°C-1.7bar@80°C CPVC Body: 12.5bar@25°C-1.7bar@80°C
Output Signal: Square wave pulse signal: (40-45Hz) nominal flow rate per m/s. With pulse conversion module, it can output 4-20mA.
Features:
Hall effect pulse output, open collector NPN, strong driving capability
High chemical corrosion resistance
IP68 protection rating, suitable for harsh field environments
Plug-in type, easy installation, high reliability, virtually maintenance-free
Applications:
Pure water process/reverse osmosis/ultrafiltration/EDI
Water purification and filtration systems
Cooling water and boiler water monitoring
Chemical industry
Agricultural irrigation
Cleaning systems and monocrystalline silicon cleaning
Description: Suitable for highly corrosive fluids, resistant to sulfuric acid, nitric acid, hydrofluoric acid, hydrochloric acid, mixed acids, strong alkalis, etc. Flow components are made of corrosion-resistant materials such as PVDF, PTFE, Hastelloy, and titanium alloy. Virtually no pressure loss, maintenance-free. Flow velocity range 0.3-6 m/s, capable of measuring fluids with velocities greater than 0.3 m/s; not suitable for media containing particulate or fibrous impurities.
Diameter Range: DN25-DN600 (1”-24”)
Flow Velocity Range: 0.3-5m/s
Linearity: L=±1%
Repeatability: R=±0.5%
Body Material: PVDF/PTFE
Impeller Material: PVDF/PTFE
Shaft and Bearings: Hastelloy C/Titanium Alloy/ZrO2
O-rings: Fluororubber
Power Supply: DC 5-24V
Protection Rating: IP68
Temperature and Pressure: PVDF Body: 12.5bar@25°C-2.5bar@100°C PTFE Body: 12.5bar@25°C-2.5bar@100°C
Hall effect pulse output, open collector NPN, strong driving capability
High chemical corrosion resistance
Minimum flow rate 0.3m/s
IP68 protection rating, suitable for harsh environments
Applications:
Sulfuric acid proportioning and flow rate monitoring
Copper sulfate monitoring in electroplating baths
Nitric acid mixtures
Chemical waste liquids
Model: KF11-P10 Compact Flow Sensor
Description: Suitable for small-diameter pipes, mounted on standard tee fittings, available in plastic and stainless steel, size range DN15-DN50 (0.5″-1.5″). Virtually no pressure loss, maintenance-free. Flow velocity range 0.2-5m/s, capable of measuring fluids with velocities greater than 0.2m/s. Not suitable for media containing particulate or fibrous impurities.
Diameter Range: DN15-DN50 (0.5”-2”)
Flow Velocity Range: 0.2-5m/s
Linearity: L=±1%
Repeatability: R=±0.5%
Body Material: PP Engineering Plastic
Impeller Material: PP
Shaft and Bearings: Al2O3/ZrO2
O-rings: FPM/EPDM/Fluororubber
Power Supply: DC 5-24V
Protection Rating: IP68
Temperature and Pressure: PP Body: 12.5 bar @ 25°C – 1.7 bar @ 80°C
Output Signal: Square wave pulse signal: 45 Hz per m/s nominal flow rate.
Features:
Hall effect pulse output, open collector NPN, strong driving capability;
High chemical corrosion resistance;
Minimum flow rate 0.2 m/s;
Compatible with standard tee fittings;
Applications:
Pure water processes/reverse osmosis/ultrafiltration/EDI;
Water purification and filtration systems;
Cooling water and boiler water monitoring;
Agricultural irrigation;
Cleaning systems and monocrystalline silicon cleaning;
Swimming pools and hot springs;
Pump protection;
Model: KF11-P10 Corrosion-Resistant Flow Sensor
Description: Suitable for highly corrosive fluids, resistant to sulfuric acid, nitric acid, hydrofluoric acid, hydrochloric acid, mixed acids, strong alkalis, etc. Flow components are made of corrosion-resistant materials such as PVDF, PTFE, Hastelloy, and titanium alloy. Virtually no pressure loss, maintenance-free. Flow velocity range 0.3-6 m/s, capable of measuring fluids with velocities greater than 0.3 m/s. Not suitable for media containing particulate or fibrous impurities.
Diameter Range: DN15-DN50 (0.5”-2”)
Flow Velocity Range: 0.3-5m/s
Linearity: L=±1%
Repeatability: R=±0.5%
Body Material: PVDF
Impeller Material: PVDF/PTFE
Shaft and Bearings: Al2O3/ZrO2/Hastelloy C/Titanium Alloy
O-rings: Fluororubber
Power Supply: DC 5-24V
Protection Rating: IP68
Temperature and Pressure: PVDF Body: 12.5bar@25°C-2.5bar@100°C
Output Signal: Square Wave Pulse Signal: 45Hz per m/s nominal flow rate.
Features:
Hall effect pulse output, open collector NPN, strong driving capability;
High chemical corrosion resistance;
IP68 protection rating, suitable for harsh field environments;
Compatible with standard tee fittings;
Applications:
Sulfuric acid proportioning and flow rate monitoring;
Copper sulfate monitoring in electroplating baths;
Nitric acid mixtures;
Chemical waste liquids;
Model: KF11-S10 Metal Impeller Flow Meter
Description:
Suitable for high temperature and high pressure environments; virtually no pressure loss, maintenance-free; flow velocity range 0.3-6m/s, can measure fluids with a velocity greater than 0.3m/s; not suitable for media containing particulate or fibrous impurities;
Suitable for high-temperature and high-pressure environments; Applicable diameter: DN50-DN600 (2″-24″); Sanitary grade available, length customizable. Uses alloy or PTFE impellers for better measurement needs. Not suitable for media containing particulate or fibrous impurities.
Diameter Range: DN25-DN600 (1″-24″)
Flow Velocity Range: 0.5-6m/s
Linearity: L=±2%
Repeatability: R=±1%
Body Material: SS316L/Brass
Impeller Material: Alloy/PTFE
Shaft and Bearings: SS316L/Hastelloy C/Titanium Alloy
O-rings: FPM/EPDM/Fluororubber
Power Supply: DC 5-24V
Protection Rating: IP68
Temperature and Pressure: 110bar@120°C
Output Signal: Square Wave Pulse Signal: 45Hz nominal flow rate per m/s. With pulse conversion module, output can be 4-20mA.
Features:
Hall effect pulse output, open collector NPN, strong driving capability;
High chemical corrosion resistance;
Customizable insertion length;
Maximum temperature 120°C, maximum pressure 110bar;
Minimum flow rate 0.5m/s;
IP68 protection rating, suitable for harsh environments;
Good stability, strong anti-interference capability;
Installation type, easy installation, high reliability, virtually maintenance-free;
Applications:
Pure water processes/reverse osmosis/ultrafiltration/EDI;
Water purification and filtration systems;
Cooling water and boiler water monitoring;
Swimming pools and hot springs;
Chemical industry;
Agricultural irrigation;
Cleaning systems and monocrystalline silicon cleaning;
KF11 Flow Sensor Dimensions and Installation
Flow Display – Transmitter – Controller
The KF11 Series Impeller Flow Meters can be configured with the KF8100 flow transmitter for real-time flow display, signal output, and batch volumetric flow control output.
Fully digital design with strong anti-interference capabilities.
SMT surface mount technology ensures high integration, stable measurement, low power consumption, and excellent repeatability of electronic units.
Powerful functionality, integrating transmission and control functions, enabling batch flow control.
Features RS485 interface output for direct connection to digital systems.
Elegant appearance, robust structure, and chemical corrosion resistance; suitable for panel mounting, wall mounting, and integrated installation, adaptable to various complex on-site installation requirements.
User-friendly design for easy operation.
Parameter
Specification
Display
Large LCD display; instantaneous flow & cumulative (total) flow; alarm indication & 4–20mA output status; cyclic menu with password protection
For KF11 Impeller Flow Meters, we also supply a variety of installation accessories, including PVC tees, PVDF tees, PTFE tees, and stainless steel tees. PP wafer flanges, PVC welded bases, stainless steel welded bases, and saddle clamps are also available.
Brewery flow meters are specialized devices that are used to measure the flow rate of liquids, such as beer and wine, in a brewery or winery setting. These devices can be used to monitor the production process, ensure quality control, and optimize the use of resources. There are a variety of different types of brewery … Read more
Like all switches, flow switches are devices used to connect and disconnect current in a circuit. In industrial systems, flow switches are critical equipment for ensuring production continuity and safety. They are essential for flow monitoring, automated control, and safety protection. Flow switches are used to control and monitor the flow rate of air, steam, … Read more
What Is a Differential Pressure Flow Meter? A differential pressure flow meter is a device that measures flow rate by measuring the pressure difference. The differential pressure transmitter is the key component in differential pressure flow measurement. Using a differential pressure transmitter, the pressure difference before and after a pipe throttling device can be measured. … Read more
Sanitary flow meters are flow measurement instruments specifically designed for industries with high hygiene requirements, such as food and pharmaceuticals. They feature excellent cleanability and resistance to contamination. Sino-Inst supplies a range of sanitary flow meters, including electromagnetic, Coriolis, turbine, gear, and oval gear types. Sanitary flow meters typically use a sanitary Tri-Clamp Connection fitting … Read more
Positive displacement flow meters(PD Meter) are versatile and cost-effective. They can be used to measure clean, corrosive fluids and gases. When you need a high-precision flow meter at a reasonable price, a positive displacement flow meter is often the best choice. This article will explain how positive displacement flow meters work, the technology behind different … Read more
Accurate measurement of flare gas flow presents a significant challenge in industrial process control. This is primarily due to the extreme variability of flare gas flow rates, the unpredictability of gas composition, and harsh operating environments. Thermal mass flow meters provide a reliable and compliant method for flare gas measurement, enabling industries to meet stringent … Read more
The KF11 Series Impeller Flow Meters offer a lower-cost flow measurement solution with broad customization options, suitable for most clean liquids. They can serve as an alternative to electromagnetic flow meters, turbine flow meters, and other similar products. Please contact our sales engineers anytime 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.
