VEGABAR 81 Process Pressure Measurement Transmitter (Liquid & Gas)

Product Overview

Pressure Transmitter VEGA VEGABAR 81

Pressure Measurement for Liquids & Gases

VEGA VEGABAR 81 process pressure measurement transmitter with chemical seal can be used to measure liquids and gases at high temperatures.

VEGABAR 81 pressure transmitter can also be adapted to provide reliable level measurement as well as pressure

VEGABAR 81 has a chemical seal system that can be changed to suit the process ensuring dependable measurement even with highly corrosive and hot products.

• Easy to adapt thanks to many configuration options
• Dependable measurement for temperatures up to 400 °C
• Reliable measurement independent of foam generation or tank installations

The extensive diaphragm materials and coatings enable the VEGABAR 81 to be suited to many sectors specifically in the chemical and petrochemical industries including in the following applications:

• Distillation column
• Ammonia reactor
• Expansion tank in a thermal solar plant
• Pulp digester
• Reaction vessel
• Distillation column

VEGABAR 81 Hazardous Area Certifications

VEGABAR 81 process pressure measurement transmitter is available with hazardous area certifications to meet ATEX & IECEX directives for Zone 1 and Zone 2 installations.

ATEX & IECEx Approvals

ATEX II 1G, 1/2G, 2G Ex ia IIC T6

ATEX II 1G, 1/2G, 2G Ex ia IIC T6 + Ship approval

ATEX II 1/2G, 2G Ex d IIC T6

IEC Ex ia IIC T6

VEGA process pressure measurement transmitters are suitable for use in hazardous areas and their instruments also have various ship approvals e.g according to GL, LRS or ABS.

Measuring Cell Technology

The main part of the pressure transmitter is the ceramic measuring cell that cleverly transforms the pressure into an electrical signal.

The pressure dependent signal is changed by the integrated electronics into a standard signal output. The VEGABAR 81 is provided with a completely welded chemical seal system with internal transmission liquid

Material Transmitter

Available in 316L and in the high resistance materials Allox C276, Tantalum as well as PTFE on 316Ti

Housing Versions

The pressure transmitters housing available in single chamber version in plastic, aluminium and stainless steel. Protection rating IP 68K and external electronics with IP 69K.

Measuring Range

-1 … +1000 bar/-0.1 … +100 MPa (-14.5 … +15000 psig)

Smallest Measuring Range

+0.4 bar/+40 kPa (+5 psig)

Process Temperature

-90 … +400 °C (-130 … +752 °F)

Signal Output

• 4-20 mA
• 4-20 mA/HART
• Profibus PA
• Foundation Fieldbus

Approvals

• ATEX
• IEC
• FM
• EAC (GOST)
• Ship
• Overfill protection
• SIL2

VEGA VEGABAR pressure measurement transmitters to suit all liquid, gas, and vapour application with measuring distance (metres), pressure range (bar), temperatures (° Celsius) and process pressure.

Pressure Transmitter Applications

♦ Reactor Process Pressure – VEGABAR 81 provides continuous pressure measurement detecting excess pressure in reactors. Benefits:

• up to 400° Celsius temperature application
• high resistance to diaphragm materials
• optional hygienic and flange connections

♦ Waste Incineration Flue Gas Measurement – VEGABAR 81 pressure transmitter provides accurate measurement of exhaust fumes emitted by corrosive and high temperature flue gas from flue gas scrubbers. Benefits:

• chemical resistant metallic diaphragm
• very small measuring ranges 0- +400mbar
• flange and tube pressure transmitter versions

♦ Dairy Pipelines & Pipework Pressure Measurement – VEGABAR 81 measures pressure in high hygiene applications in the dairy industry subject to CIP and SIP cleaning cycles. Benefits:

• CIP and SIP capable metallic measuring cell
• resistance to condensation moisture and formation on pipework
• pressure transmitter with stainless steel housing IP66, IP67, IP68 ingress protected

♦ Pressure Measurement Of Steam Drums – VEGABAR 81 measures permissible steam pressure in process and hazardous area vapour drums. Benefits:

• up to 400° Celsius operating temperatures
• fully welded measuring cell
• diffusion and vacuum resistant