The IFM LI5131 is a capacitive point-level sensor designed for monitoring liquid levels in industrial tanks and containers. It is intended for applications involving coolants, lubricants, hydraulic oils, and similar media. The sensor provides reliable level switching without moving mechanical parts. Its compact construction supports installation in restricted machine spaces. The sensor is suitable for automated level control and dry-run protection.
Explore performance details, construction highlights, applications, and technical information in one clear overview.
The LI5131 uses capacitive sensing to detect the presence of liquid at a defined point. The electronic sensing principle eliminates mechanical floats and moving switches. This supports repeatable operation during frequent filling and emptying cycles. The sensor can be used for high-level or low-level detection. It is suitable for machine tanks and process containers.
The sensor is positioned within IFM's range for coolants, cleaning agents, lubricants, and hydraulic oils. Capacitive sensing allows detection of suitable conductive and non-conductive liquid media. The sensor is designed for industrial automation. Its compact format simplifies installation in machinery. This makes it suitable for fluid-level monitoring.
The LI5131 can be connected to industrial control systems for automated level switching. Its electronic output provides a direct signal to the controller. This can be used to activate pumps or prevent dry running. The sensor can also support tank-level alarms. This provides simple automated point-level control.
Capacitive level detection
Point-level measurement
Electronic switching
No mechanical float
Compact sensor design
Liquid detection
Coolant compatibility
Lubricant compatibility
Hydraulic-oil applications
Industrial automation
Coolant tanks
Lubricant reservoirs
Hydraulic systems
Machine tools
Pump dry-run protection
High-level detection
Low-level detection
Fluid storage tanks
Industrial machinery
Process equipment
The LI5131 detects whether liquid is present at the selected installation point. This allows it to act as a high-level or low-level switch. Electronic sensing provides repeatable operation. The absence of moving parts reduces mechanical wear. This makes it suitable for continuous machine operation.
Point-level sensors can prevent pumps from operating without sufficient fluid. The LI5131 can also provide high-level alarms. This helps automate tank filling and emptying sequences. The compact design allows installation directly on machine reservoirs. It therefore supports practical fluid-management systems.
| Specification | LI5131 |
|---|---|
| Product Type | Point-level sensor |
| Model | LI5131 |
| Sensing Principle | Capacitive |
| Measurement Type | Point level |
| Target | Liquid |
| Application Media | Coolants |
| Application Media | Lubricants |
| Application Media | Hydraulic oils |
| Detection | Electronic |
| Output | Switching |
| Installation | Machine/tank |
| Sensor Type | Level switch |
| Mechanical Float | None |
| Level Function | High/low point detection |
| Control Integration | PLC |
| Pump Protection | Yes |
| Tank Monitoring | Yes |
| Fluid Monitoring | Yes |
| Process Automation | Yes |
| Construction | Industrial |
| Sensor Body | Compact |
| Sensing Face | Capacitive |
| Operating Mode | Continuous |
| Maintenance | Low mechanical wear |
| Detection Cycle | Repeated switching |
| Installation Environment | Industrial |
| Application | Fluid reservoirs |
| Application | Machine tanks |
| Category | Level sensor |
| Manufacturer | IFM |
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