KSLV Capacitance Level Sensor Selection Guide
1. Product Introduction and Comparison with Related Products
1.1 What is a Capacitance Level Sensor?
A capacitance level sensor is a device that measures liquid levels based on changes in capacitance. It forms a capacitor with the container wall or another electrode. When the liquid level changes, the capacitance between the electrodes changes, and the liquid level is calculated based on the amount of change in capacitance. It can be either contact or non-contact, and due to its excellent performance, it is widely used in various industrial fields.
1.2 Comparison of Capacitance Level Sensors and Related Products
| Different Characteristics | Capacitance Level Sensor | Related Products (e.g. Ultrasonic Level Sensor, Radar Level Sensor) |
| Temperature Range | Wide temperature range: standard models -60~200°C. By choosing different materials, can withstand temperatures as low as -200°C and as high as 800°C. | Narrower temperature range, typically -40~85°C. Radar level sensors can be customized for high temperatures up to 200°C. |
| Pressure Resistance | Maximum pressure resistance of 32 MPa | Ultrasonic level sensors: 1 MPa Radar level sensors: 1.8 MPa |
| Maintenance | No maintenance required for clean media. For impure media, possible blockage can be cleaned by removing the outer sleeve. | Regular monitoring of probes for dust accumulation is needed, which requires cleaning. |
| Measurement Environment | Suitable for both calm and fluctuating liquid surfaces Suitable for foam surfaces | Suitable for calm and slightly fluctuating liquid surfaces Not suitable for foam surfaces |
| Measurement Type | Contact type | Non-contact type |
2. KSLV Capacitance Level Sensor Parameter Comparison
| Model | KSLV604 | KSLV605 | KSLV606 | KSLV607 |
| Accuracy | 0.5% FS, 1% FS | 0.5% FS, 1% FS | 2% FS | 0.5% FS |
| Measuring Range | 3m (MAX) | 3m (MAX) | 20cm (MAX) | 2m (MAX) |
| Process Temperature | -60~200°C, customizable | -60~200°C, customizable | -200~200°C | -190~550°C |
| Process Pressure | 1 MPa | 32 MPa | Atmospheric pressure | 22 MPa |
| Installation Method | Clamp installation, customizable clamp size. | Threaded installation: M24*2 / M20*1.5, customizable thread size. | Threaded installation: M10*1 / M12*1 | Threaded installation: M20*1.5 |
| Protection Class | Default IP67, customizable IP68 | Default IP67, customizable IP68 | Default IP65, customizable IP68 | IP67 |
| Communication Interface | RS485 | RS485 | RS485 | HART |
| Protocol | Modbus RTU | Modbus RTU | Modbus RTU | HART Protocol |
| Supported Output | 4-20 mA / Relay / Voltage | 4-20 mA / Relay / Voltage | 4-20 mA / Relay / Voltage | 4-20 mA |
3. Core Parameter Interpretation and Application Scenarios
| Parameter | Parameter Meaning | Application Scenario Description |
| Accuracy | Accuracy (±X% FS) refers to the maximum deviation between the actual measured value and the true liquid level, where FS is the full-scale range. | 0.5% FS: reagent preparation, beverage filling, chemical reactors 1% FS or 2% FS: general water tanks, oil storage tanks |
| Measuring Range | Refers to the range between the maximum and minimum liquid levels the sensor can measure. | 3m: beverage storage tanks, boiler drums, large capacity containers 0.2m: small volume equipment or local liquid level measurement |
| Process Temperature/Pressure | Process temperature refers to the environmental temperature of the measured medium during sensor operation. Process pressure refers to the internal pressure of the container where the sensor is installed. | Normal temperature and pressure: water tanks, oil tanks High temperature and pressure: boiler liquid levels, reaction kettles |
| Protection Class | The protection class (IP rating) indicates the sensor’s ability to prevent solid particles and liquids from entering. | IP68: used in outdoor damp environments, submerged environments IP67: general outdoor environments IP65: indoor environments |
4. Step-by-Step Selection Process
Step 1: Lock the Measuring Range
- Confirm the internal height of the tank, tank wall thickness, and flange thickness (or if there is no flange, measure the distance from the installation point to the top of the tank).
- Provide the three values mentioned above, along with the liquid level variation range.
- We will select the most suitable level sensor for your required range.
Step 2: Confirm the Required Output
- Confirm the communication protocol or signal type supported by the control system (e.g., control system supports Modbus protocol, supports RS485 interface, 4-20 mA analog input).
- Choose the data transmission method you prefer.
Step 3: Consider Environmental Conditions
- Confirm the working environment (e.g., required accuracy for engineering use, temperature variation range, etc.).
- Refer to the “Core Selection Parameters and Application Scenarios” section to choose the appropriate parameters.
Step 4: Evaluate Installation Compatibility
- Download the product manual and determine how the product can be installed based on the product dimensions and thread sizes.
Step 5: Consult Professionals
- If you are still unsure about the selection, you can consult the KACISE professional technical team. They will provide more targeted recommendations based on your specific requirements and site conditions.
5. Typical Application Scenarios
| Application Field | Recommended Model | Recommended Reason |
| Food Processing | KSLV604 | Uses quick-disconnect flanges, made of 316 stainless steel, quick installation and cleaning, can be cleaned daily. |
| Small Oil Tank Liquid Level Detection | KSLV606 | Small in size, fine probe, short length, probe length only up to 20 cm. Convenient for installation in any location. |
| Outdoor Liquid Level Detection | KSLV605 | Fully sealed with IP68 waterproof rating, customizable threads to fit many installation methods. |
| High Temperature and High Pressure Liquid Level Detection | KSLV605, KSLV607 | High pressure resistance and customizable for high-temperature versions. |
6. Summary
To help you quickly identify the appropriate KSLV series capacitance level sensor, we briefly review the key points of this guide:
By comparing the parameters of the KSLV series products, you can initially filter models based on your required range, accuracy, and other needs. Understanding the core parameters (measuring range, accuracy, protection class, etc.) helps you match the most appropriate application scenarios. Finally, by following the five-step selection process (confirm range → confirm output → consider environment → evaluate installation → consult professionals), you can avoid selection mistakes.
The typical application scenarios table provides direct references for common fields, enabling you to quickly identify recommended models.
If you still have selection doubts or need customized solutions based on specific measurement requirements, please feel free to contact us—our professional team will provide one-on-one guidance to help you choose the most cost-effective capacitance level sensor.
If you are unsure which model to choose, feel free to contact us with your application details for technical support.
