The trainer is supplied from the water mains. The flow rate is adjusted using valves and measured using a rotameter. Four different pipe sections are fitted to a panel. Each section can be individually selected using ball valves. The measuring points are 1m apart. The pressure drop over a pipe section is measured using a digital, battery-operated differential manometer. To keep measuring inaccuracies as low as possible, the pressure is measured using annular chambers.
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