VEGAFLEX 81
TDR sensor for continuous level and interface measurement of liquids
Universal TDR sensor for liquids of all kinds
Application area
Cable, rod or coaxial sensor. Even in applications with steam, buildup, foam or condensation, the sensor delivers precise and reliable readings – also in standpipes or bypass pipes.
The VEGAFLEX 81 level sensor measures maintenance-free all kind of liquids. Even in applications with vapour, buildup, foam generation and condensation, the sensor delivers precise and reliable measured values. The VEGAFLEX 81 is the economical solution for various level and interface measurements.
Your benefit
- The guided adjustment enables a simple, time-saving and reliable setup
- Shortenable probes offer a simple standardisation and highest flexibility in the planning
- Comprehensive diagnostic possibilities ensure a maintenance-free operation and hence a high plant availability
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Product comparison
The ace for level measurement and interface measurement in all liquids

The VEGAFLEX 81 guided radar sensor is exceptional when it comes to measuring the level or interface of liquids. Guided radar is extremely versatile and can be found in almost every industrial sector. Whether bitumen or liquefied gas, in storage containers or standpipes, in a metering tank or in tank farms – VEGAFLEX 81 measures the level or interface (separation layers) of liquids with great reliability and accuracy.
Guided radar delivers reliable measurements data for control or safety systems for
- Level measurement in ammonia storage tanks
- Level measurement in standpipes
- Interface measurement in storage tanks, bypass tubes, standpipes
Drawing generator
Operating instructions
VEGAFLEX 81
4 … 20 mA/HART - two-wire
Specification sheet
VEGAFLEX 81
4 … 20 mA/HART - two-wire
Product catalog
Guided radar
Product information
VEGAFLEX 81, 83, 86
Drawing generator
Further downloads for this product
All documents and software for this product can be found in our Download Center.
Show all downloadsBluetooth USB adapter

Wireless adjustment of sensors and instruments via Bluetooth
Show ProductVEGADIS 81

Remote measurement value indication and adjustment of plics® sensors
$ 128.00
VEGADIS 82

External measured value display and adjustment for 4 ... 20 mA/HART sensors
$ 69.00
VEGADIS 176

Magnetic pen for display/adjustment module PLICSCOM

Magnetic pen for on-site adjustment
Show ProductVEGAMET 381

Measured value display and simple control functions
Show ProductVEGAMET 391

Measured value indication, simple control functions, remote enquiry of measured data. optimized for water/sewage water industry
Show ProductVEGAMET 624

Measured value indication, simple control functions such as remote enquiry of measured values for a 4 ... 20 mA/HART sensor
Show ProductVEGAMET 625

Measured value indication, simple control functions such as remote enquiry of measured values for two HART sensors
Show ProductVEGASCAN 693

Measured value indication and remote enquiry of measured data for up to 15 HART sensors
Show ProductVEGATOR 141

VEGATOR 142

PLICSMOBILE T81

Measured data enquiry and remote parameter adjustment for a HART sensor
Show ProductVEGATRENN 141

VEGATRENN 142

VEGATRENN 151

Single channel separator in two-wire technology for 4 … 20 mA sensors
$ 147.00
VEGATRENN 152

Double channel separator in two-wire technology for 4 … 20 mA sensors
$ 214.00
Overvoltage protection B 81-35

Overvoltage protection B 63-32

Overvoltage protection for Profibus PA and Foundation Fieldbus circuits
$ 164.00
Overvoltage protection B 63-48

Overvoltage protection B 62-30 W

Overvoltage protection for Profibus PA and Foundation Fieldbus circuits
$ 116.00
Overvoltage protection B 62-36 G

VEGACONNECT

Interface adapter between PC and VEGA instruments
Show ProductVEGABOX 03

Breather housing with ventilation filter
Show ProductEthernet switch

up to 8 RS45 pluggable
Show ProductProfibus PA/DP segment coupler

Simple segment coupler for up to 93.75 kbit/s DP-side
Show ProductG1½ threaded adapter for VEGAFLEX 80 and VEGAPULS 64
VEGAFLEX series 80 cable and rod components
VEGAFLEX series 80 probe extensions
VEGAFLEX series 80 spacers

Spacers or centering weights fix the measuring probe in the middle of the tube.
Show ProductVEGAFLEX series 80 centering/gravity weights
FLEX80 tensioning facility for cable version of FLEX81, FLEX86
Electronics VEGAFLEX serie 80
Process component VEGAFLEX 81
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