VEGA VEGADIS 82 External Display for 4-20 mA HART Sensors

A loop-powered display that also adjusts HART sensors

The VEGADIS 82 is a loop-powered external display and HART adjustment unit for 4…20 mA/HART sensors. It is wired into the signal line at any location in the loop and acts as a pure display instrument in a 4…20 mA current loop, so it can serve as an external display for a four-wire sensor, a VEGAMET controller or a VEGATRENN separator with an active 4…20 mA output. When used with a HART sensor it works as master and adjusts the sensor parameters via HART, using the PLICSCOM display and adjustment module with four keys and a dot-matrix LC display. A filter element in the housing also provides atmospheric pressure compensation for a connected submersible pressure transmitter.

Technical specifications

Choosing a loop display

A loop display costs voltage: VEGA states a maximum of 1.7 V without lighting and 3.2 V with lighting, so the loop supply must cover that on top of the transmitter’s minimum voltage and the load. HART communication adds a requirement for loop resistance. With a standard HART sensor, the VEGADIS 82 works in the loop in master mode, so any HART-compliant sensor on the loop can be adjusted through its standard parameters, which VEGA lists as a universal-use benefit.

Typical placements

Use it beside a four-wire radar, next to a VEGAMET controller, or on the cable of a submersible probe such as the VEGAWELL, where the housing’s ventilation filter also provides the vent for the cable’s reference tube. The plastic housing is rated IP66/IP67 and the aluminium or stainless-steel housings IP66/IP68, and a panel-mount version exists. Give the sensor, HART requirement and the housing material when you request a quotation, and confirm Ex approval with VEGA for hazardous-area use.

Mechanically the sheet gives a weight of about 0.35 kg, the same as the VEGADIS 81, with spring-loaded terminals and M20 x 1.5 or ½ NPT cable entry, and a panel-mounting version with IP40 and NEMA 1 protection. The ambient temperature is -20 to +70 °C. The sheet notes that data in the safety instructions apply for approved instruments, so if the display will sit in a hazardous area the approval and its electrical limits must be checked on the certificate before ordering.

Documents and quotation

The official VEGA VEGADIS 82 (4…20 mA/HART) specification sheet (47647-EN, version 200814) is attached to this page for download and covers the technical data, dimensions and wiring summarised above.

For a quotation, tell us the medium, tank or channel dimensions, output signal, hazardous-area requirement and quantity. Seven Star LLC, an independent supplier in Muscat, will respond with availability and a commercial offer; other level instrumentation is on our site. Always verify the complete order code against VEGA’s configurator before you place an order.