The level sensors of the LFV330 series are universally usable limit switches that detect predefined filling heights in liquid systems with millimetre-accuracy – even under difficult operating conditions. With LFV330 is an extended tube version available for vertical mounting with up to 6 metres switching distance to the top of the container. Regardless of maximum fill amounts in containers as full messages to prevent overfilling, empty messages to prevent dry running or switching signal for refilling or as idle message for pump protection, the LFV330 runs independently of the liquid and is wear-free and maintenance-free. A wide selection of flange, threads and hygienic connections allow customer-specific solutions. The device is suitable for hygienic applications and can be cleaned using SIP and CIP processes. There are also variants for use in potentially explosive atmospheres, to prevent overfilling (in compliance with WHG), and with marine certification (GL).

Product features

• Universal technology works in all kind of liquids
• Commissioning without filling
• Process temperature up to 250 °C
• Immune to deposit formation
• Very high repeatability
• EHEDG and FDA-compliant
• CIP and SIP resistant
• Polished surface

Customer benefits

• Maintenance-free limit switch, reduced maintenance costs
• No calibration required, reduce costs
• Low installation cost
• Flexible level switch
• Fast commissioning saves time
• Sensor test in situ

Applications

The sturdy stainless steel tuning fork is piezo-electrically energized and vibrates at its resonance frequency. Once the tuning fork is covered with liquid, the resonance frequency changes. This change is reliably detected by the  integrated electronic circuitry and converted into a switch signal.

Length up to 6.000 mm, there are sample configurations bellow:

Housing plastic wih plug M20x1.5

Model name	Process connection	Output	Length	Part-No.
LFV330-XXNBVXPRX0100	Thread NPT3/4 (PN64, 316L)	Relay	100 mm	6038973
LFV330-XXGBVXPRX0200	Thread G3/4A (PN64, 316L)	Relay	200 mm	6039512
LFV330-XXGBVXPRX0300	Thread G3/4A (PN64, 316L)	Relay	300 mm	6039663
LFV330-XXGBVXPRX0500	Thread G3/4A (PN64, 316L)	Relay	500 mm	6039661

Housing aluminium with plug M20x1.5

Model name	Process connection	Output	Length	Part-No.
LFV330-XXGBVXMTX0100	Thread G3/4A (PN64, 316L)	Transistor	100 mm	6039668
LFV330-XXGBVXMRX0200	Thread G3/4A (PN64, 316L)	Relay	200 mm	6039665
LFV330-XXGAVXMTX0300	Thread G1A (PN64, 316L)	Transistor	300 mm	6039666
LFV330-XXNBVXMTX0500	Thread NPT3/4 (PN64, 316L)	Transistor	500 mm	6039667

Housing stainless steel electropolished

Model name	Process connection	Output	Length	Part-No.
LFV330-XXGBVX8TX0100	Thread G3/4A (PN64, 316L)	Transistor	100 mm	6039669
LFV330-XXNBVX8TX0200	Thread NPT3/4 (PN64, 316L)	Transistor	200 mm	6039670
LFV330-XXGBVX8RX0300	Thread G3/4A (PN64, 316L)	Relay	300 mm	6039664
LFV330-XXGBVX8RX0500	Thread G3/4A (PN64, 316L)	Relay	500 mm	6039662

Choose your configuration with the LFV330 type code.
For further part numbers please contact SICK's sales departement.