1. Product Introduction
What Is the KUS Series Ultrasonic Level Sensor?
The KUS series ultrasonic level sensor is an advanced product developed by KACISE, utilizing a patented acoustic algorithm to achieve distance measurement in air. The maximum measuring range covers 1 m to 15 m, with 20 m and 30 m customized versions available.
The series supports customizable IP68 protection, and adopts PVDF and PTFE housings, making it suitable for corrosive environments. The product lineup includes KUS550 / KUS600 / KUS630 (basic models), KUS640 (basic model + local display), KUS650 (basic model + display + 4G wireless module), and KUS660 (dedicated solar-powered 4G wireless model).
All models in the KUS series support 4G network cloud platform connectivity, enabling centralized management and data analysis. With flexible integration capabilities, the KUS series meets diverse application requirements across different industries.
Advantages of the KUS Series Ultrasonic Level Sensor
- Non-contact measurement, no direct contact with the measured medium
- High accuracy, up to 0.5%
- High protection rating, up to IP68
- Standard industrial outputs such as 4–20 mA and RS485, with optional 4G wireless data transmission
- Supports PLC system integration for centralized control
- Supports integration with network modules such as 4G, LoRa, NB-IoT, and satellite communication, enabling remote data access via cloud platforms
2. KUS Series Ultrasonic Level Sensor Parameter Comparison
| Model | KUS550 | KUS600 | KUS630 | KUS640 | KUS650 | KUS660 |
| Core Difference | Single sensor (4G optional) | Sensor + display(4G optional) | Sensor + display+ 4G | Sensor + solar power + 4G | ||
| Measuring Distance | 1m/3m | 5 m | 15 m | Can use any single sensor from KUS550 / 600 / 630 | ||
| Blind Zone | 0.15m/0.25 m | 0.6 m | 0.6 m | |||
| Accuracy | ≤ 0.5%–1% FS | |||||
| Installation | 1’’ NPT | MM48×1.5 | Sensor with threaded installationDisplay and solar panel require bracket installation | |||
| Power Supply | 3.3–30VDC 12–30VDC (analog output) | 12–30 VDC | Battery | Solar panel + battery | ||
| Protection Rating | IP65–IP68 | Display IP65 | Display IP65 | IP65~IP68 | ||
| Output Signal | RS485 Modbus / Switch output / 4–20 mA | 4G | ||||
| Temperature Compensation | All sensors are equipped with temperature compensation | |||||
| Operating Temperature | -25 to 70 °C | |||||
| Storage Temperature | -40 to 85 °C | |||||
| Housing Material | PVDF | PVDF | PVC / PTFE | Display housing: aluminum alloy | Solar panel: PVC | |
3. Core Selection Parameters and Application Scenarios
| Parameter | Description | Application Scenarios |
| Measuring Distance | The maximum distance that the sensor can measure | 1m: Small storage tanks, fuel tanks3m / 5m: Medium storage tanks, river level and aquaculture pond monitoring15m: Large silos, ship cargo holds, reservoir water level monitoring |
| Measurement Accuracy | The error range of the measured distance relative to the actual distance | 0.5%–1% FS, where FS refers to full scale, meaning the maximum measurement error does not exceed 0.5%–1% of the full measuring range |
| Protection Rating | Indicates resistance to dust, water, and foreign object intrusion | IP68 is a high protection level, meaning the device is completely dustproof and suitable for long-term immersion in water |
| Output Signal | The data transmission method between the sensor and other devices | 4G refers to transmitting sensor data to the internet via a 4G DTU for long-distance real-time monitoring |
| Housing Material | Determines the environments in which the sensor can operate reliably | PVC: Suitable for general outdoor, non-corrosive environmentsPVDF / PTFE: Suitable for various industrial environments, including corrosive conditions |
4. Step-by-Step Selection Process
Step 1: Determine the Measuring Range
- Identify the maximum measuring distance required in the application
- Select a model that fully covers the maximum distance
- Example: If the maximum measuring distance is 15 m, the KUS630 ultrasonic level sensor can be selected
Step 2: Determine Required Outputs
- Confirm the communication protocol or signal type (e.g., RS485 interface, 4–20 mA analog output)
- Determine the device type (display, 4G, solar-powered)
Step 3: Consider Environmental Conditions
- Identify the operating environment (e.g., corrosive environment, outdoor environment, temperature, pressure)
- Determine accuracy requirements, protection rating, and housing material
Step 4: Evaluate Installation Compatibility
- Download the product manual
- Confirm installation method based on product dimensions and thread specifications
Step 5: Consult Professionals
- If you are still uncertain about the selection, consult the KACISE professional technical team, who will provide targeted recommendations based on your specific requirements and on-site conditions
5. Typical Application Scenarios
| Application | Recommended Model | Reason |
| Outdoor River Water Level Monitoring | KUS660 | Self-powered, no battery replacement required. Data can be read remotely via 4G. Protection rating up to IP68, unaffected by moisture or rain. |
| Chemical Storage Tanks | KUS550 | Fully sealed PVDF housing, corrosion-resistant, high accuracy. Can be equipped with a 4G module for cloud-based monitoring of tank levels. |
| Grain Silos and Material Bins | KUS630 | Large measuring range, offering advantages in solid material measurement compared to other models. Optional 4G module enables cloud monitoring of material level. |
6. Summary
To help you quickly identify the appropriate KUS series ultrasonic level sensor, the key points of this article are reviewed as follows: first, the KUS series ultrasonic level sensors feature large measuring ranges, high accuracy, and strong environmental adaptability, making them suitable for various liquid and material level measurements; second, by comparing KUS series product parameters, models can be preliminarily selected based on range, accuracy, and core differences; third, understanding the meaning of core parameters (range, accuracy, protection rating, etc.) helps match the most suitable application scenarios; finally, following the five-step selection process can effectively avoid selection errors. The typical application scenario table provides direct references for common industries, enabling fast model selection.
If you still have selection questions or require customized solutions based on specific measurement needs, please feel free to contact us directly. Our professional team will provide one-on-one guidance to help you select the most cost-effective level sensor.
If you are unsure which model to choose, feel free to contact us with your application details for technical support.
