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Earlier this year, nine new storage tanks with a capacity of 54,000 litres each were installed at John Crabbie and Co, makers of Crabbie’s Alcoholic Ginger Beer.

As part of that project, John Crabbie and Co also required a accurate and reliable contents measurement solution for each new vessel.

The information needed to be shared with production planning to meet growing demand, as well as having a local display so that operators could readily see the level on each tank.

John Crabbie and Co turned to Vega, which then supplied the new Vegapuls Plics-Plus radar with enhanced performance.

These new devices look at product level echo in much higher definition with an accuracy of +/-2mm.

The units are installed on 3in ANSI flanges in the roof of each vessel and fitted with encapsulated antennas, complying with the manufacturer’s stringent hygiene requirements.

The radars were calibrated with individual vessel strapping tables, using the integral linearisation table programme within each sensor.

The gauged tank volume is calculated internally by the instrument and the result is transmitted digitally without the need for external software, calculation or controller.

The Vegapuls sensors supplied for the tank gauging are connected using Hart multi-drop communications with a fixed current of 4mA, where each unit is connected in a ‘star’ layout back to one main two-core screened cable, thus reducing cabling, trunking and conduit costs.

The sensor data is carried back on the main signal cable to the Vegascan unit.

This handles the information and converts it using an internal server to standard Ethernet computer protocols.

This enables the tank inventory to be shared via the company local area network (LAN).

Vegascan also has capability to transmit level alarms via email and SMS or to publish level data to its own website.

It also allows connection for using Pactware FDT/DTM universal sensor commissioning and maintenance software via the LAN with communication down to individual sensor level.

The local tank readout is achieved using the Vegadis 61, a display unit that connects to, and is powered directly from, the head of the transmitter.

This unit can be mounted up to 50m away from the sensor and offers a five-digit scalable back-lit display and programming point at the base of each vessel.

VEGA Level measurement, Level switches and Pressure Transmitters – world leading manufacturer of control and switching instrumentation and measurement solutions for Liquids, Solids and Gases for storage, processing and control of products.

Customers are central to everything we do, from application engineering, manufacturing and supplying a quality product – through to installation advice, commissioning and after sales.

Plics is a new concept – A system based on an integrated platform for all instruments with designed in features to save you time and money.

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