A free service to present real-time and historical data of
Symmetron data loggers on the World Wide Web, with plots and statistics for each measuring station.
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Threshold: Starting threshold - 0.75 m/s (1.75 M.P.H.)
Cup distance constant (63% recovery) - 3.0 m (10 ft.)
Materials: Cups one piece injection molded black polycarbonate (Lexan) Body housing is black ABS plastic;
Shaft fully hardened beryllium copper; Modified self-lubricating teflon bearings. Rated Pv factor of 20,000 (at 15 mph, Pv is approx. 500; at 100 mph Pv is approx 2,000) Upper Bearing is centered in the plane of cup thrust for optimal loading. Permanent magnet Indox 1, 25 mm (1 in) dia., 13 mm (0.5 in) long, 4 poles