1. Project Background
A local facility operator required continuous level monitoring for several water tanks and basins used in daily operation.
These tanks were part of a small-scale water and wastewater handling system, where knowing the liquid level in real time was important for storage management and pump operation.
Previously, level checks were carried out manually, which was inefficient and could not provide continuous level information.
To improve monitoring reliability, the customer selected the KPS400 series submersible level sensor for this application.
2. Measurement Challenges
The application presented the following challenges:
● Tanks and basins with varying liquid levels
● Limited installation space inside the tank
● Long-term immersion of the sensor in liquid
● Requirement for stable and continuous level signals
● Simple installation and low maintenance expectations
The customer required a practical solution suitable for continuous operation.
3. Solution Overview
To address these requirements, the KPS400 submersible level sensor was installed directly inside the tanks and basins.
The sensor measures liquid level based on hydrostatic pressure, providing stable level signals regardless of surface conditions.
3.1 Equipment Configuration
The system configuration included:
● KPS400 series submersible level sensor
● Integrated pressure sensing element
● Cable connection for signal transmission
● Analog output connected to the control system
The compact design allows the sensor to be easily deployed in various tank structures.
3.2 Key Technical Features
| Item | Description |
| Measurement Principle | Hydrostatic pressure measurement |
| Installation Method | Submersible installation |
| Output Signal | Analog 4–20 mA |
| Power Supply | 24 VDC |
| Applicable Medium | Water and similar liquids |
| Application Environment | Water tanks / basins |
3.3 Implementation Process
Installation
The KPS400 sensor was lowered into the tank and fixed at the bottom using a simple mounting method.
Operation
The sensor continuously measures liquid level and outputs stable level signals to the control system.
Maintenance
Routine inspection is limited to periodic visual checks, with no frequent maintenance required.
4. Project Results
| Item | Actual Performance |
| Measurement Stability | Good, pressure fluctuation within ±2 mmH₂O |
| Installation & Commissioning | Simple, per unit installation approx. 10–15 minutes |
| Maintenance Frequency | Low, monthly check ~5–10 minutes per unit |
| Data Continuity | Continuous measurement without signal interruption for over 30 days |
| Operational Reliability | Stable operation, no abnormal readings |
5. Conclusion
The KPS400 series submersible level sensor provided a practical and reliable solution for tank and basin level monitoring.
Its simple installation, stable hydrostatic measurement principle, and suitability for long-term immersion make it ideal for water tanks, small wastewater basins, and similar applications.
For more technical details, wiring diagrams, or model selection guidance, please click here to learn more or contact our technical team.
