LFP Inox

TDR level sensor for liquids

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Features

Product description

The LFP Inox is a hygienic level sensor for liquids using TDR technology – a process for determining the time of flight of electromagnetic waves. The time difference between the sent pulse and the reflected pulse is used to generate a level signal, both as a continuous value (analog output) and a freely positionable switching point (switching output). The use of robust FDA-compliant materials like stainless steel in an EHEDG-certified design means that the LFP Inox guarantees optimal, unrestricted cleaning, even for the highest hygiene requirements. Its modular connection system allows simple and flexible installation in any application. Thanks to high temperature and pressure resistance, unrestricted use is possible under CIP and SIP conditions. The communication capability via IO-Link to the superordinate control units rounds the profile.

Product features

Level monitoring in hygienic applications
Manually retractable monoprobe up to 2,000 mm long with Ra ≤ 0.8 μm Process temperature up to 150 °C, process pressure up to 16 bar CIP/SIP resistant
High enclosure rating IP 67 and IP 69K
Interchangeable hygienic process connections
3-in-1: combined display, analog output and binary output
Analog output 4 mA … 20 mA / 0 V … 10 V, switchable, plus two binary outputs

Customer benefits

Robust design increases service life
High flexibility due to retractable probe and interchangeable connection concept
Cost savings thanks to multiple output signals: one system for level detection and continuous level monitoring
Maintenance-free and quick to commission, saving time and costs
No calibration or recalibration required for commissioning, thus saving time and costs

Applications

Level monitoring in buffer tanks of filling systems and filling machines
Level control in rinsing systems
Fluid detection in CIP systems
Level monitoring in cosmetic and pharmaceutical mixing systems
Level measurement in industrial processes with difficult ambient conditions

Technology

The LFP Inox uses the TDR technology (TDR = Time Domain Reflectometry) – a process for determining the time of flight of electromagnetic waves. A low-energy, electromagnetic impulse is generated in the electronics of the sensor, coupled into the coaxial probe and run down the inside of the probe. When this impulse reaches the fluid on the surface to be measured, part of the impulses is reflected and runs along the probe back to the electronics, which then calculates the level from the time difference between the impulse sent and received on. The sensor can output this as continual measurement value (analog output) but can also derive freely positionable switching points from it (switching output).

Order information

The part numbers below show a selection of our common configurations and represent only an extract of the product portfolio.

Signal output: 1x PNP+1x PNP/NPN + 4 mA … 20 mA / 0 V … 10 V
Process connection: G 3/4 A
Process temperature: –20 °C ... +150 °C
Process pressure: –1 bar ... +16 bar
Electrical connection: M12x1, 5-pin
Enclosure rating: IP 67, IP 69K

Model name Probe length Part No.

LFP0300-G1NMB
300 mm
1053288

LFP0400-G1NMB 400 mm 1052069

LFP0500-G1NMB 500 mm 1052070

LFP0600-G1NMB 600 mm 1052071

LFP0700-G1NMB 700 mm 1052072

LFP0800-G1NMB 800 mm 1052073

LFP0900-G1NMB 900 mm 1052074

LFP1000-G1NMB 1.000 mm 1052075

LFP1100-G1NMB 1.100 mm 1052076

LFP1200-G1NMB 1.200 mm 1052077

LFP1300-G1NMB 1.300 mm 1052078

LFP1400-G1NMB 1.400 mm 1052079

LFP1500-G1NMB 1.500 mm 1052080

LFP1600-G1NMB 1.600 mm 1052081

LFP1700-G1NMB 1.700 mm 1052082

LFP1800-G1NMB 1.800 mm 1052083

LFP1900-G1NMB 1.900 mm 1052084

LFP2000-G1NMB 2.000 mm 1052085

Choose your configuration with the LFP Inox type code.
For further part numbers please contact SICK's sales departement.