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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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Application
Technical specifications
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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

Other applications

Storage and buffer tanks

Level measurement and point level detection in small storage and buffer tanks

Level measurement and point level detection in small storage and buffer tanks

To the application

BTX separators

Level measurement and point level detection in the BTX separators

Level measurement and point level detection in the BTX separators

To the application

Cooling tower basin

Cooling tower basin level measurement

Cooling tower basin level measurement

To the application

Tanks for solvents

Level measurement, point level and pressure measurement in the storage and transfer of solvents

Level measurement, point level and pressure measurement in the storage and transfer of solvents

To the application
Technical specifications
Measuring range - Distance
  • 75 m [Meter - Foot]
Process temperature
  • -60 ... 200 °C [°C - °F]
Process pressure
  • -1 ... 40 bar [Bar - kPa - psi]
Accuracy
  • ± 2 mm
Version
  • Basic version for exchangeable cable ø 2; ø 4 mm
  • Basic version for exchangeable rod ø 8 mm
  • Basic version for exchangeable rod ø 12 mm
  • Coax version ø 21.3 mm for ammonia application
  • Coax version ø 21.3 mm with single hole
  • Coax version ø 21.3 mm with multiple hole
  • Coax version ø 42.2 mm with multiple hole
  • Exchangeable rod ø 8 mm
  • Exchangeable rod ø 12 mm
  • Exchangeable cable ø 2 mm with gravity weight
  • Exchangeable cable ø 4 mm with gravity weight
  • Exchangeable cable ø 2 mm with centering weight
  • Exchangeable cable ø 4 mm with centering weight
  • Exchangeable cable ø 4 mm without weight
  • exchangeable, PFA-coated cable ø4 mm with non-coated centering weight
Materials, wetted parts
  • PFA
  • 316L
  • Alloy C22 (2.4602)
  • Alloy 400 (2.4360)
  • Alloy C276 (2.4819)
  • Duplex (1.4462)
  • 304L
Threaded connection
  • ≥ G¾, ≥ ¾ NPT
Flange connection
  • ≥ DN25, ≥ 1"
Seal material
  • EPDM
  • FKM
  • FFKM
  • Silicone FEP coated
  • Borosilicate glass
Housing material
  • Plastic
  • Aluminium
  • Stainless steel (precision casting)
  • Stainless steel (electropolished)
Protection rating
  • IP66/IP68 (0,2 bar)
  • IP66/IP67
  • IP66/IP68 (1 bar)
Output
  • Profibus PA
  • Foundation Fieldbus
  • Two-wire: 4 … 20 mA/HART
  • Modbus
  • Four-wire: 4 … 20 mA/HART
Ambient temperature
  • -40 ... 80 °C
Approvals
Scope
  • ATEX / Europe
  • CSA / Canada
  • FM / USA
  • EAC (GOST) / Belarus
  • EAC (GOST) / Kazakhstan
  • EAC (GOST) / Russia
  • IEC / worldwide
  • NEPSI / China
  • UKR Sepro / Ukraine
  • INMETRO / Brazil
  • CCOE / India
  • KTL Korea
  • UKEX
Explosion protection
  • Intrinsic safety "i"
  • Flameproof enclosure "d"
  • Dust ignition protection "t"
Foodstuffs/Pharma
  • FDA
Ship approval
  • ABS
  • BV
  • CCS
  • DNV
  • LR
  • NK
  • RINA
Overfill protection
  • WHG
  • VLAREM II
SIL qualification
  • SIL2
Display & adjustment
Adjustment
  • PLICSCOM
  • PC, PACTware and DTM
  • HART-Communicator
  • Software (e. g. AMS™, PDM)
Indication
  • Display/adjustment module PLICSCOM
  • VEGADIS 81
  • VEGADIS 82

Drawing generator

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Product catalog

Guided radar

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    • IT
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    • PL
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    • TR
    • ZH
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Product information

VEGAFLEX 81, 83, 86

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    • US
    • DE
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    • FR
    • IT
    • NL
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    • TR
    • ZH
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Specification sheet

VEGAFLEX 81

Two-wire: 4 … 20 mA/HART

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    • US
    • DE
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    • FR
    • IT
    • NL
    • PT
    • TR
    • ZH
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Operating instructions

VEGAFLEX 81

Two-wire: 4 … 20 mA/HART

    • EN
    • DE
    • CS
    • DA
    • ES
    • FI
    • FR
    • HU
    • IT
    • KK
    • KO
    • NL
    • NO
    • PL
    • PT
    • SV
    • TR
    • UK
    • ZH
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Drawing generator

Generate 2D and 3D drawings for your specific configuration.

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Further downloads for this product

All documents and software for this product can be found in our Download Center.

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Wireless communication
Separating instruments
Overvoltage protection instruments
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Accessory
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