Innovative TDR technology enables inexpensive, reliable level measurements largely independent of applications. The LFT is suitable both for continuous level measurement and for point level measurement in almost all fluids; changes in the properties of fluids to be measured do not influence it. It is the solution for precise and reliable measurements, especially in small tanks and containers – independent of installation conditions.

Product features

• No mechanical moving parts
• Small deadband, ideal for small containers
• Accurate measurement, even when liquids change – no re-calibration necessary
• Independent of installation conditions
• Simple single-button teaching
• Flexible probe length of up to 2,000 mm
• Safety-oriented power output acc. to Namur (NE43)

Customer benefits

• Maintenance-free level sensor, saving of maintenance-costs
• No re-calibration necessary
• Reduced installation time and costs
• Flexible measurement system for different container sizes
• One system for point level and continuousapplications: reduces stock

Applications

• Monitoring coolants and lubricants in machine tooling
• Monitoring cleaning solutions and detergents in mechanical engineering and the electronic industry
• Monitoring filling tanks in automobile construction
• Level control in grinding machines
• Level monitoring in hydraulic containers
• Mixing units

The LFT 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).

1 current output (4 ... 20 mA) and 1 switching output/hysteresis: 3 mm

 Output: 4 switching output (normally closed)/hysteresis: 3 mm

Model Name	Probe length	Process connection (tank)	Connection Plug (housing)	Part- No.
LFT0200-01B0A40	200 mm	G 3/4 A	M12x1, 8-pin	1043612
LFT0300-01B0A40	300 mm	G 3/4 A	M12x1, 8-pin	1043613
LFT0400-01B0A40	400 mm	G 3/4 A	M12x1, 8-pin	1043614
LFT0500-01B0A40	500 mm	G 3/4 A	M12x1, 8-pin	1043615
LFT0600-01B0A40	600 mm	G 3/4 A	M12x1, 8-pin	1043616
LFT0700-01B0A40	700 mm	G 3/4 A	M12x1, 8-pin	1043617
LFT0800-01B0A40	800 mm	G 3/4 A	M12x1, 8-pin	1043618
LFT0900-01B0A40	900 mm	G 3/4 A	M12x1, 8-pin	1043619
LFT1000-01B0A40	1000 mm	G 3/4 A	M12x1, 8-pin	1043620
LFT1100-01B0A40	1100 mm	G 3/4 A	M12x1, 8-pin	1043621
LFT1200-01B0A40	1200 mm	G 3/4 A	M12x1, 8-pin	1043622
LFT1300-01B0A40	1300 mm	G 3/4 A	M12x1, 8-pin	1043623
LFT1400-01B0A40	1400 mm	G 3/4 A	M12x1, 8-pin	1043624
LFT1500-01B0A40	1500 mm	G 3/4 A	M12x1, 8-pin	1043625
LFT1600-01B0A40	1600 mm	G 3/4 A	M12x1, 8-pin	1043626
LFT1700-01B0A40	1700 mm	G 3/4 A	M12x1, 8-pin	1043627
LFT1800-01B0A40	1800 mm	G 3/4 A	M12x1, 8-pin	1043628
LFT1900-01B0A40	1900 mm	G 3/4 A	M12x1, 8-pin	1043629
LFT2000-01B0A40	2000 mm	G 3/4 A	M12x1, 8-pin	1043630

Model Name	Probe length	Process connection (tank)	Connection Plug (housing)	Part- No.
LFT0200-01B1A20	200 mm	G 3/4 A	M12x1, 8-pin	1043631
LFT0300-01B1A20	300 mm	G 3/4 A	M12x1, 8-pin	1043632
LFT0400-01B1A20	400 mm	G 3/4 A	M12x1, 8-pin	1043633
LFT0500-01B1A20	500 mm	G 3/4 A	M12x1, 8-pin	1043634
LFT0600-01B1A20	600 mm	G 3/4 A	M12x1, 8-pin	1043635
LFT0700-01B1A20	700 mm	G 3/4 A	M12x1, 8-pin	1043636
LFT0800-01B1A20	800 mm	G 3/4 A	M12x1, 8-pin	1043637
LFT0900-01B1A20	900 mm	G 3/4 A	M12x1, 8-pin	1043638
LFT1000-01B1A20	1000 mm	G 3/4 A	M12x1, 8-pin	1043639
LFT1100-01B1A20	1100 mm	G 3/4 A	M12x1, 8-pin	1043640
LFT1200-01B1A20	1200 mm	G 3/4 A	M12x1, 8-pin	1043641
LFT1300-01B1A20	1300 mm	G 3/4 A	M12x1, 8-pin	1043642
LFT1400-01B1A20	1400 mm	G 3/4 A	M12x1, 8-pin	1043643
LFT1500-01B1A20	1500 mm	G 3/4 A	M12x1, 8-pin	1043644
LFT1600-01B1A20	1600 mm	G 3/4 A	M12x1, 8-pin	1043645
LFT1700-01B1A20	1700 mm	G 3/4 A	M12x1, 8-pin	1043646
LFT1800-01B1A20	1800 mm	G 3/4 A	M12x1, 8-pin	1043647
LFT1900-01B1A20	1900 mm	G 3/4 A	M12x1, 8-pin	1043648
LFT2000-01B1A20	2000 mm	G 3/4 A	M12x1, 8-pin	1043649

Output 4 Switching outputs- 2 normaly closed and 2 normaly open/hysteresis: 3 mm

Model Name	Probe length	Process Connection (Tank)	Connection Plug (housing)	Part- No.
LFT0200-01B0C40	200 mm	G 3/4 A	M12x1, 8-pin	1048239
LFT0300-01B0C40	300 mm	G 3/4 A	M12x1, 8-pin	1048240
LFT0400-01B0C40	400 mm	G 3/4 A	M12x1, 8-pin	1048241
LFT0500-01B0C40	500 mm	G 3/4 A	M12x1, 8-pin	1048201
LFT0600-01B0C40	600 mm	G 3/4 A	M12x1, 8-pin	1048242
LFT0700-01B0C40	700 mm	G 3/4 A	M12x1, 8-pin	1048243
LFT0800-01B0C40	800 mm	G 3/4 A	M12x1, 8-pin	1048244
LFT0900-01B0C40	900 mm	G 3/4 A	M12x1, 8-pin	1048202
LFT1000-01B0C40	1000 mm	G 3/4 A	M12x1, 8-pin	1048245
LFT1100-01B0C40	1100 mm	G 3/4 A	M12x1, 8-pin	1048246
LFT1200-01B0C40	1200 mm	G 3/4 A	M12x1, 8-pin	1048247
LFT1300-01B0C40	1300 mm	G 3/4 A	M12x1, 8-pin	1048248
LFT1400-01B0C40	1400 mm	G 3/4 A	M12x1, 8-pin	1048249
LFT1500-01B0C40	1500 mm	G 3/4 A	M12x1, 8-pin	1048250
LFT1600-01B0C40	1600 mm	G 3/4 A	M12x1, 8-pin	1048251
LFT1700-01B0C40	1700 mm	G 3/4 A	M12x1, 8-pin	1048252
LFT1800-01B0C40	1800 mm	G 3/4 A	M12x1, 8-pin	1048253
LFT1900-01B0C40	1900 mm	G 3/4 A	M12x1, 8-pin	1048254
LFT2000-01B0C40	2000 mm	G 3/4 A	M12x1, 8-pin	1048255

Choose your configuration with the LFT type code.
For further part no. please contact SICK's sales departement.