VEGA VEGAPULS 68 Radar Level Sensor

Product Overview

Level Sensor VEGA VEGAPULS 68

VEGA VEGAPULS 68 radar level sensor provides continuous level measurement of bulk solids under difficult process conditions and is suitable for high silos, large bunkers, stone crushers and in the furnace providing exact measuring results independent of vapour, dust or noise.

The VEGAPULS 68 has a large measuring range and a variety of antenna options and materials ensuring the level sensor can be used universally for virtually all applications & processes – maintenance free operation through the usage of the non-contact measuring principle.

Product Specifications

1. Housing cover with integrated PLICSCOM (optional)
2. Housing with electronics
3. Swivelling holder with flange
4. Horn antenna

Operating VEGAPULS 68

VEGAPULS 68 is a radar sensor in K-band technology for continuous level measurement of solids. An adapted version of VEGAPULS 68 is available for each area of application – the level sensor with horn antenna is particularly suitable for measurement of virtually all bulk solids in small silos and vessels. VEGAPULS 68 with parabolic antenna is recommended for large silos and vessels with up to 70 metres (76 yds) measuring distance and for measurement of solids with low dielectric figure. VEGAPULS 68 is also suitable for applications in liquids.

Using VEGAPULS 68

The adjustment of the VEGA instrument is carried out via the optional display and adjustment module PLICSCOM or via a PC with the adjustment software PACTware and corresponding DTM. Further adjustment options are possible via a HART Communicator as well as manufacturer-specific programs such as AMS™ or PDM.

Polarisation of VEGAPULS 68

The emitted radar pulses of VEGAPULS 68 are electromagnetic waves – the waves have electrical and magnetical components that are perpendicular to each other. The polarisation is defined by the direction of the electrical component. With radar level sensors, the polarisation can be used to considerably reduce the effect of false echoes by turning the instrument in the connection flange or mounting boss.The position of the polarisation is marked on the VEGA instrument.

Connecting VEGAPULS 68 To Power Supply

Fig 1 Electronics Compartment – Double Chamber Housing

1. Plug connector for VEGACONNECT (I²C interface) 2. Internal connection cable to the connection compartment 3. Terminals for VEGA VEGADIS 81.

Fig 2 Terminal Compartment – Double Chamber Housing

1. Spring-loaded terminals for signal output 2. Ground terminal for connection of the ground conductor and screen 3. Spring-loaded terminals for voltage supply.

Vegapuls 68 Level Sensor Hazardous Area Certifications

VEGAPULS 68 radar level sensor 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 T5

ATEX II 1G, 1/2G, 2G Ex ia IIC T5 + Ship approval

ATEX II 1G, 1/2G, 2G Ex ia IIC + II 1D, 1/2D, 2D Ex t IIIC IEC Ex ia IIC T6 Ga, Ga/Gb, Gb

ATEX II 1/2G, 2G Ex d ia IIC T5/T6

IEC Ex d ia IIC T6

IEC Ex ia IIC Ga, Ga/Gb, Gb + Ex t IIIC T* Da, Da/Db, Db IEC Ex d IIC Ga/Gb,Gb + Ex t IIIC T* Da, Da/Db, Db

ATEX II 1D, 1/2D, 2D Ex t IIIC T* Da, Da/Db, Db

IEC Ex t IIIC T* Da, Da/Db, Db

ATEX I M2 Ex ia I or I M2 Ex ia I Mb

VEGA level sensors are suitable for use in hazardous areas and their instruments also have various ship approvals such as e.g. DNV, GL, LRS or ABS.

Function

Extremely short microwave pulses are emitted by the antenna system in the direction of the measured product, reflected by the product surface and received back again by the antenna system.

The time from emission to reception of the signals is proportional to the level in the vessel. A special time stretching procedure allows reliable and precise measurement of the extremely short signal running times.

MATERIALs

Wetted Parts: PVDF or PP

Process Seal: FPM

Housing Versions

Double chamber version in plastic, stainless steel or aluminium, IP66/67.

Electronics Versions

• 4-20 mA
• 4-20 mA/HART
• PA
• FF
• Modbus

Approvals

• ATEX
• IEC
• Shipbuilding
• FM
• CSA

Preventing Moisture Ingress

Use the recommended cables in the VEGA VEGAPULS 68 user manual and tighten the cable gland – additional protection against moisture penetration can be secured by leading the connection cable downward in front of the cable entry. Rain and condensation water can thus drain off – this applies mainly to outdoor mounting as well as installation in areas where high humidity is expected (e.g. through cleaning processes) or on cooled or heated vessels.

VEGA Level Measurement Instruments & Sensors include capacitive, hydrostatic, guided wave radar and ultrasonic sensors for the measurement of bulk liquids, solids and powders in safe, industrial and hazardous area industries.