State-of-the-art ‘SPECTRA II’ Control Panel meets latest in aquatic specifications
The recently launched ‘SPECTRA II’ control system, is the latest addition to the innovative atg Evoqua range.
The SPECTRA II control panel features key functions to meet the very latest in aquatic specifications, including ‘Variable Power Control’ (often referred to as dose pacing), a ‘Low Power Function’ and a state-of-the-art ‘Boost Function’. The benefits of these market leading features are explained below.
Fully Variable Power Control (turn down from 100% to 50%)
The SPECTRA II controller calculates the UV dose based on the true flow, as opposed to a fixed flow programmed into the microprocessor. There are three ways it will save energy consumption:
- It will automatically turn down the power if the treatment capacity of the UV system is significantly higher than the actual flow through the unit.
- It will automatically turn down the power at the beginning of lamp life (the output of medium pressure UV lamps typically degrades by about 25% over one year and the UV systems are sized to deliver the required dose at the end of lamp life).
- It will automatically turn down the power when the flow drops if there is a 4-20 mA flow signal input. In most swimming pools, there are only small reductions in flow, when the filters need back-washing. However, some pools are installing variable speed drive pumps, to cut down the costs of pumping at night and this option would be most effective then.
Low Power Function (100% to 50% power in one step)
This function works in a single power step and it is most often used on a timed basis, with 100% power being the normal operating mode and 50% during timed periods (usually at night when the pool is not in use). It can also operate via an external switch or digital signal.
Boost Function (100% power on external signal)
This function can be used with certain chlorine controllers. Variable power would be the normal operating condition and 100% power will activate when a combined chlorine alarm on the controller operates. A digital output on the chlorine controller can be accepted by the atg SPECTRA II controller to boost the UV system to full power. If a Low Power timing has been programmed, this will override the Boost function.
Setting up these functions is quite simple – atg can be contacted for details.
This market leading control panel is also widely used throughout drinking water, wastewater and oil & gas sectors. In addition to the above functions, the SPECTRA II control system includes many other key features such as data logging, process interlocks, Modbus & Ethernet communication and the unique ‘Data-Stream’ service, which allows operators to view the performance and status of their UV systems using any web-enabled device such as Smart Phones, I-Pads and Laptops.