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For liquids (density: > 0.7 ... 2.5 g/cm³)

Application area

Electronics: Transistor output or contactless switch, process fitting: Thread

The VEGASWING S 51 is a universal level switch with smallest dimensions for use in all liquids. Independent of the mounting position, it detects reliably with millimetre accuracy the limit level. The instrument can be used as empty or full detector, as approved overfill protection, dry run protection or pump protection in vessels and pipelines. The VEGASWING S 51 offers maximum reliability in a wide application range.

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Technical specifications
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Application area


VEGASWING S 51 is used as a universal level switch in liquids. It detects reliably, with millimetre precision, when a certain level is reached. It can be mounted in any position in vessels and pipelines. The instrument can be implemented as a full or empty detector, as an approved overfill device, or as a dry run/pump protection system. Typical applications are washing, filling, cooling and lubricating systems in processes and for machine builders.

Technical specifications
Process temperature
-40 ... 150 °C
Process pressure
-1 ... 64 bar
Materials, wetted parts
Threaded connection
≥ G¾, ≥ ¾ NPT
Protection rating
IP 66/IP 67
IP 65
Contactless electronic switch
Transistor (PNP)
Operating voltage
20 … 253 V AC/DC, 50/60 Hz
Overfill protection

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