SICK LFP Inox Series Level Sensor

Hygienic level detection of fluids via TDR sensor with switching and analog outputs. Wide process temperature and pressure range with up to 4000mm probe length.

This model has 245 variants.
Effective August 29th, 2025 SICK has added a 9.8% surcharge for all of their products. The surcharge will appear as a separate line item on each sales order.
Part Number
  • LFP Inox Series
Highlights...

Features

  • Measurement principle: TDR sensor
  • Detection principle: contact
  • Medium: fluids
  • Accuracy of sensor element: ± 5mm
  • Output signal(s):
    • 1 x PNP + 1 x PNP/NPN + 4 to 20mA / 0 to 10V
    • 1 x PNP + 3 x PNP/NPN + 4 to 20mA / 0 to 10V
  • Process temperature: –20 to 180°C
    • Varies depending on configuration
  • Process pressure: -1 to 16bar
  • CIP/SIP-resistant
  • IO-Link
  • Enclosure rating: IP67, IP69

The SICK LFP Inor Series Level Sensor is a level sensor for liquids using TDR technology to determine the time of flight of electromagnetic waves. The time difference between the sent pulse and the reflected pulse generates a level signal. This sensor family can emit these signals continuously via analog output, and switching output. The use of FDA-compliant materials in an EHEDG-certified design means that the LFP Inox can be relied upon for optimum and unrestricted cleaning, even in applications with the most stringent hygiene requirements. Thanks to high temperature and pressure resistance, these sensors are compatible with CIP and SIP conditions. The modular probe allows for quick and easy integration, with an IO-Link interface facilitating communication with superordinate control units.

Applications

  • Buffer tanks of filling systems and filling machines
  • Rinsing systems
  • CIP systems
  • Mixing systems in the cosmetics and pharmaceuticals industry