The VEGAFLEX 81 level sensor measures various types of liquids without the need for maintenance. The sensor provides accurate and dependable measured values even in situations with vapour, accumulation, foam production, and condensation. The cost-effective option for various level and interface measurements is the VEGAFLEX 81.
The guided adjustment enables a simple, time-saving and reliable setup
Comprehensive diagnosis options ensure maintenance-friendly operation and thus high plant availability
Shortenable probes allow simple standardization and maximum flex- ibility in planning
High frequency microwave pulses are coupled onto a cable or rod and guided along the probe. The pulse is reflected by the product surface. The time from emission to reception of the signals is proportional to the level in the vessel.
Ʋ Cable probe
up to 75 m (246.1 ft)
Ʋ Rod probe
up to 6 m (19.69 ft)
± 2 mm
Thread from G¾, ¾ NPT, flanges from
DN 25, 1"
-1 … +40 bar/-100 … +4000 kPa
(-14.5 … +580 psig)
-40 … +200 °C (-40 … +392 °F)
Ambient, storage and transport temperature
-40 … +80 °C (-40 … +176 °F)
9.6 … 35 V DC
The wetted parts of the instrument are made of stainless steel. The instrument seal is made either of FKM, FFKM or EPDM.
The housings are available as single chamber or double chamber version in plastic, stainless steel or aluminium. They are available with protection ratings up to IP 68 (1 bar).
The instruments are available in different electronics versions. Apart from the two-wire electronics with 4 … 20 mA/HART, a four-wire version and two purely digital versions with Profibus PA and Foundation Fieldbus are available.
The instruments are suitable for use in hazardous areas and are approved e.g. according to ATEX and IEC. The instruments also have various ship approvals such as e.g. GL, LRS or ABS
The adjustment of the instrument is carried out via the optional display and adjustment module PLICSCOM or via a PC with the adjustment software PACTware and corresponding DTM. Further adjustment options are available via HART communicator as well as manufacturerspecific programs such as AMS™ or PDM.
Electronics and terminal compartment, single chamber housing
Voltage supply/Signal output
For display and adjustment module or interface adapter
For external display and adjustment unit
Ground terminal for connection of the cable screen