Data acquisition Meeting the need
For this project, QuantumX units from HBK were used to collect data with a CX22 industrial computer/data recorder, with flash memory. The system, which runs with Catman software, was mounted in a tailor-made framing system, and placed inside waterproof housing with waterproof subsea connectors. The QuantumX data acquisition system
(DAQ) is the perfect tool for reliable data acquisition of different physical quantities and sensor technologies. Flexible, reliable, and easy to use, the system is small and portable, meeting the design requirements specified. “As a company dedicated to testing, we
needed to choose the right equipment for this project. So, following a market review, we opted to use HBM components. HBM provided us with excellent service and knowledge in the strain gauge market, which was an especially important aspect to us”, explains Kjell Sivertsen, discipline manager for Lab Technology and Equipment, Rainpower, Turbine Laboratory, Trondheim. Before testing, HBM strain gauges are
applied to runner blades on predefined spots, and the other transducers are mounted on their appropriate places. All transducers are then connected to the
Flight Recorder with watertight cables, and the unit is then mounted onto the hub of the runner. Before filling the turbine with water, the recorder is switched on and the catman program starts collecting data. The recorder then collects data during filling up the turbine, through different modes of operation, after shutting down and when the dewatering of the turbine starts. When the system is empty, the runner can be inspected, and all data from the Flight Recorder can be transferred to a laptop, and a brief check of the collected data is done. Back in the office the measurement data can be conveniently analysed with advanced algorithms. This is particularly important as it enables
Rainpower to provide customers with accurate and valuable information on how parameters such as the number of starts, stops and operation in different power ranges can affect the lifetime of the runner.
ConClusion
With the development of the Flight Recorder proving such a success, Rainpower hopes to undertake a further three to four tests later this year, both in Norway and Sweden. As renewable energy sources continue to
play an increasingly important role in the energy supply worldwide, HBK was delighted to be able to assist Rainpower on this
project. Furthermore, as Rainpower continues to put more and more emphasis on the development of new turbines, HBK looks forward to continuing this relationship in the future.
HBK
www.hbkworld.com
Instrumentation Monthly November 2021
53
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