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Brand: VEGA
VEGA VEGADIS 81 External Display and Adjustment Unit
Description
Put the display and keys of a plics sensor within reach, up to 50 m away
The VEGADIS 81 is an external, digital display and adjustment unit for all VEGA plics sensors. It is mounted in an easily accessible position up to 50 m from the sensor, connected to the sensor electronics by a screened four-wire cable and powered by the sensor, with data carried digitally over an I²C bus. Operators therefore read the measured value and adjust the sensor from the ground instead of from a tank roof or a hot, hazardous or cramped location. The unit takes the PLICSCOM display and adjustment module, which provides a dot-matrix LC display with clear text and graphic support and four keys.
Technical specifications
| Parameter | Specification |
|---|---|
| Type | VEGADIS 81, external display and adjustment unit for plics sensors |
| Connection to | VEGA plics sensors; powered by the sensor |
| Data transmission | Digital (I²C bus) |
| Cable length | 25 m (82.02 ft) or 50 m (164 ft), depending on sensor version |
| Indication | LC dot-matrix display (PLICSCOM) |
| Adjustment | 4 keys; PACTware/DTM via VEGACONNECT; optional Bluetooth |
| Housing | Plastic PBT, aluminium die-cast or 316L |
| Protection rating | Plastic IP66/IP67, NEMA 4X; aluminium IP66/IP68 (0.2 bar), NEMA 6P |
| Module protection | IP20 unassembled; IP40 mounted into VEGADIS |
| Ambient temperature | -20…+70 °C (-4…+158 °F); storage -40…+80 °C |
| Cable entry | Cable gland M20 x 1.5 (cable ø 5…9 mm) or ½ NPT |
| Terminals | Spring-loaded, 0.2…2.5 mm² solid/stranded; 0.2…1.5 mm² with sleeve |
| Weight | Approx. 0.35 kg (0.772 lbs) |
Where an external display pays off
Radar and guided-wave sensors are usually installed on roof nozzles where reading the display needs a ladder. A VEGADIS 81 on a wall at eye height at the foot of the tank solves that, and the installation can be turned in 90° steps for reading and adjustment comfort. Because it receives its power from the sensor and shares the sensor’s I²C bus, there are no additional supply or signal wires to the control room; the only cable is the screened four-wire line of up to 50 m.
Compatibility notes
VEGADIS 81 works with plics sensors only, meaning VEGA’s current plics-platform instruments with a display and adjustment module slot. It is not a loop display for arbitrary 4…20 mA devices: for that, VEGA offers the VEGADIS 82 for 4…20 mA/HART sensors and the VEGADIS 176 for loop display. The module can be used with VEGA’s Bluetooth variant of PLICSCOM, which allows wireless adjustment by smartphone. State your sensor type, cable length needed (25 m or 50 m), housing material and cable entry in the enquiry, and confirm approvals with VEGA.
The housing options are plastic PBT, aluminium die-casting and 316L, and the inspection window in the lid is polycarbonate (UL-746-C listed) so the display can be read without opening the housing. The sheet also lists a ground terminal in 316Ti/316L, a weight of about 0.35 kg and dimensions of roughly 79 mm diameter by 69 mm height for the plastic version, which makes it easy to fit on handrails, pipes or walls. Approvals for different regions are configured in VEGA’s configurator.
Documents and quotation
The official VEGA VEGADIS 81 specification sheet (43815-EN, version 160603) is attached to this page for download and covers the technical data, dimensions and wiring summarised above.
Send Seven Star LLC your tag list, process medium, vessel geometry, required approvals and quantity and we will prepare a quotation from our Muscat office. We are an independent supplier; more level instrumentation is listed on our site. Confirm the final order code and approval marking with the manufacturer before ordering.
Datasheets & Documents
- Datasheet VEGA VEGADIS 81 Specification Sheet (43815-EN) Download
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About brand
VEGA is a German maker of level and pressure instruments. Bruno Grieshaber founded the company in 1959 in Triberg in the Black Forest, and it has been based in Schiltach since 1975, still family owned as VEGA Grieshaber KG. VEGA is best known for radar level sensors: it introduced the first two-wire radar level sensor in 1997 and the first 80 GHz radar sensor for bulk solids, the VEGAPULS 69, in 2015.
Seven Star LLC is an independent supplier listing VEGA radar and guided wave radar transmitters, point level switches, pressure transmitters and signal conditioning instruments for buyers in Oman and the GCC. Sensors are matched from the product code on the type label.
VEGA at a glance
| Origin | Founded by Bruno Grieshaber in 1959 in Triberg, Germany |
|---|---|
| Headquarters | Schiltach, Black Forest, Germany (since 1975) |
| Ownership | Family-owned company: VEGA Grieshaber KG |
| Milestones | First two-wire radar level sensor (1997), first 80 GHz radar for bulk solids, VEGAPULS 69 (2015), VEGAPULS 6X single radar platform for liquids and solids |
| Product families | VEGAPULS radar, VEGAFLEX guided wave radar, VEGASWING and VEGAPOINT switches, VEGACAL capacitive probes, VEGABAR and VEGADIF pressure, VEGAMET and VEGADIS signal conditioning |
VEGA sensor and instrument series
| Series | Type | Typical use |
|---|---|---|
| VEGAPULS 6X, VEGAPULS 69, VEGAPULS 64 | Process radar level transmitters (80 GHz) | Storage and process tanks, reactors with agitators, silos and bulk solids |
| VEGAPULS 11, 21, 31, 42 | Compact radar sensors | Water and wastewater, simple storage tanks; VEGAPULS 42 with IO-Link for machine integration |
| VEGAPULS C 21, C 11, C 22, C 23 | Radar sensors with fixed cable, IP68 | Wet wells, pumping stations, open channels and river levels |
| VEGAFLEX 81, 82, 83, 86 | Guided wave radar (TDR) | Level and interface in liquids, bulk solids, hygienic and high-temperature or high-pressure service (VEGAFLEX 86) |
| VEGASWING 61, 63, VEGAPOINT 21 | Vibrating and capacitive point level switches | Overfill protection, dry-run protection and high or low level alarms |
| VEGACAL 62 to VEGACAL 67 | Capacitive rod and cable probes | Point and continuous level in solids and conductive or adhesive liquids |
| VEGABAR 82, 83, 28, 29, 38 | Pressure transmitters, ceramic or metallic cell | Process pressure and hydrostatic level; compact 18/19 and 28/29/38 versions for utilities |
| VEGADIF 85 | Differential pressure transmitter | DP flow, filter monitoring and level in pressurised vessels |
| VEGAMET 841, VEGADIS 176 | Controller and loop display | Level display, pump control and remote indication of 4-20 mA signals |
Where VEGA instruments are used
VEGA radar sensors measure level in crude oil and product tanks, separators, chemical reactors, cement and aggregate silos, grain stores and water reservoirs. Compact cable radars are widely used in wastewater pumping stations and flood monitoring. Because 80 GHz radar focuses a narrow beam, it can measure past internal structures in a tank, and it is not affected by the temperature, pressure or vapour above the product, which suits hot Gulf storage tanks.
Ordering VEGA instruments: what we need
The product code on the type label (for example PS64.XXXXXXX) fixes the measuring range, antenna or probe, process connection, electronics and approvals. Send it with the serial number. For a new measurement add the medium and its dielectric constant if known, tank or silo height and internals, process pressure and temperature, process connection, output (4-20 mA HART, PROFIBUS PA, Modbus or IO-Link), and any hazardous-area or overfill protection approval required.
Facts checked against VEGA company and product information, October 2026.
Browse VEGA products by category: Level Transmitter, Pressure Instrumentation, Controllers and Data Acquisition.
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Frequently Asked Questions
What is the VEGADIS 81 for?
It is an external display and adjustment unit for VEGA plics sensors, mounted up to 50 m from the sensor.
How is it powered?
The sensor powers it through the four-wire cable.
Which communication does it use?
A digital I²C bus.
What protection ratings exist?
Plastic housing IP66/IP67 (NEMA 4X); aluminium IP66/IP68 at 0.2 bar (NEMA 6P).
Can it be adjusted by PC?
Yes, with PACTware and DTM through the VEGACONNECT adapter, or by Bluetooth with the Bluetooth version of the module.
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