Omniflex specialises in the design and manufacture of a range of electronic products for the automation and control industry.
Glastonbury Festival is a major ‘Greenfield’ music and performing arts festival held in the Vale of Avalon.
The site is more than a mile and a half across with a perimeter of about 8.5 miles. During the Festival, the local population increases by around 175,000 people.
The Glastonbury Festival currently requires more than 1 million gallons of water over a period of five days. There are over 700 hand basins and 100 standpipes located around the site to provide fresh water for drinking and washing.
As the festival has grown so has the demand for a good supply of water to all the facilities across the site.
In order to address this requirement, two new 2-million litre capacity reservoirs and a pumping station have been built at the highest point on the site. The conditions for holding this year’s festival demanded a water pressure of 1.2 bars at the vast number of water outlets.
The challenge was to ensure that water pressure measurements at various points around the site were constantly available to the pumping station. A radio telemetry system was considered the best option.
Glastonbury chose Omniflex M2G RTUs for their requirements. The installed system comprised of three M2R 868Mhz radio telemetry systems in the form of two slave units located at different points on the perimeter of the festival and one master unit located at the pumping station.
Sequence of Operation
Pressure sensors located in the pipework provide 4-20ma analogue input signals into the two slave units, which then transmit this data via the 868Mhz unlicensed radio frequency to the master unit situated in the pumping station.
This data is then supplied via the RS232/485 Serial modbus port into an ABB controller, which is responsible for bringing online or taking offline a bank of pumps within the pumping station based on the demand for water.
The M2R units are capable of accepting both digital and analogue inputs.