VEGA VEGABAR 83 High Pressure Transmitter with Metallic Cell

Overview of the VEGA VEGABAR 83

The VEGA VEGABAR 83 is a process pressure transmitter with a fully welded metallic measuring cell for gauge, absolute and vacuum measurement of gases, vapours and liquids. VEGA positions it for applications with high process pressure: its range extends from −1 to +1000 bar, while the smallest nominal range of 0.1 bar still allows precise low-pressure and hydrostatic level measurement. Accuracy classes down to 0.075 %, process temperatures up to +200 °C and a wide choice of threaded, flanged and hygienic fittings make it a universal choice across industries.

Seven Star LLC supplies the VEGA VEGABAR 83 to oil and gas operators, utilities, food producers and chemical plants in the Sultanate of Oman and the GCC. As a supplier with engineering support in Muscat, we confirm the nominal range, overload requirement, process fitting, seal material and approvals for every tag, and supply the VEGA specification sheet and operating instructions with the offer.

Measuring Principle

The heart of the VEGA VEGABAR 83 is its completely welded metallic measuring cell, which converts pressure via the integrated electronics into a standardised output signal. VEGA uses three sensing technologies depending on the range. Up to 40 bar, a piezoresistive element behind the diaphragm is coupled through an internal transmission liquid. From 100 bar upward, a strain gauge element is applied to the rear of the stainless steel diaphragm, forming a dry system with no isolating liquid at all, which is well suited to hydraulic and very high pressure duties.

For process temperatures up to +200 °C and larger fittings, VEGA uses the METEC element, which combines the ceramic-capacitive CERTEC measuring cell with a special temperature-compensated seal system. The vacuum-resistant design maintains measurement reliability when the process is evacuated, and the step response of the standard version is no more than 80 ms. Damping can be adjusted from 0 to 999 seconds to smooth pulsating pressures from pumps and compressors.

Engineering Design of the VEGA VEGABAR 83

Process fittings start at G½ and ½ NPT threads and flanges from DN 16 or 1 inch, and extend to hygienic connections such as DIN 11851 slotted nut, DIN 11864, Varivent and SMS fittings for food and pharmaceutical plants. Wetted parts are made of 316L or Alloy C276, with FKM, FFKM or EPDM seals where the cell design needs them. Housings are single chamber versions in plastic, aluminium or stainless steel, with protection ratings up to IP68 (25 bar) using external electronics and IP69 for washdown areas.

Electronics options include two-wire 4–20 mA and 4–20 mA/HART, and fully digital Profibus PA and Foundation Fieldbus versions; the two-wire version operates from 9.6 to 35 V DC. A slave sensor variant allows two VEGABAR 80 series transmitters to form an electronic differential pressure measurement. Configuration is carried out with the PLICSCOM display and adjustment module, PACTware and DTM, or wirelessly via Bluetooth from a smartphone, tablet or PC.

Key Features

The VEGA VEGABAR 83 offers the following features documented by VEGA:

• Measuring ranges from −1 to +1000 bar, with the smallest nominal range of 0.1 bar.
• Accuracy classes of 0.075 %, 0.1 % or 0.2 %, depending on measuring range and process fitting.
• High overload capability, for example 1200 bar for the 600 bar range and 1500 bar for the 1000 bar range.
• Dry strain gauge cell from 100 bar for high pressure duties without any isolating liquid.
• Process temperature from −40 to +200 °C with the METEC measuring element.
• Long-term stability below 0.15 % × TD over ten years for the ceramic/metallic cell.
• Electronic differential pressure measurement in combination with a VEGABAR slave sensor.
• Hazardous-area approvals such as ATEX and IEC, plus ship approvals including GL, LRS and ABS.

Industrial Applications

VEGA recommends the VEGA VEGABAR 83 for process pressure and level in high-pressure processes such as hydraulic circuits, pipeline pressure measurement, bitumen level in asphalt mixing plants and storage tank level in dairies, as well as gas scrubbers and autoclaves. In Oman, the instrument is well suited to wellhead and flowline pressure monitoring, water injection and high-pressure pump discharge at oil fields, gas compression stations, and hydraulic power units on drilling rigs and process skids. Its vacuum-resistant cell also handles evacuated vessels in chemical plants in Sohar.

The hygienic versions serve dairy, juice and food factories in Muscat and Salalah, where pressure and hydrostatic level must be measured with cleanable fittings. Seven Star LLC supplies the VEGA VEGABAR 83 with suitable mounting accessories and can recommend alternatives such as the VEGA VEGABAR 82 ceramic cell pressure transmitter, the VEGA VEGABAR 64 pressure transmitter and the Yokogawa EJA430E gauge pressure transmitter, or

the VEGA VEGADIF 85 differential pressure transmitter

Technical Specifications of the VEGA VEGABAR 83

The values below for the VEGA VEGABAR 83 come from the VEGA specification sheet 45065-EN and the technical data in the operating instructions; Ex-approved versions may have different limits.

How to Order

Send Seven Star LLC your RFQ for the VEGA VEGABAR 83 with the medium, operating and maximum pressure, required range, process temperature, connection standard, wetted material, output signal and Ex approval. Our instrumentation division in Muscat will confirm the order code and the current lead time. The VEGA specification sheet can be downloaded from this page, and our engineers assist customers throughout Oman and the GCC with selection, installation and commissioning.