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| Re: Wheel detectors (1170115) | |||
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Re: Wheel detectors |
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Posted by Broadway Lion on Thu Aug 2 16:09:30 2012, in response to Re: Wheel detectors, posted by Stephen Bauman on Thu Aug 2 15:58:44 2012. LION assumes that it times the passage of a SINGLE WHEEL. A laser is aimed at the wheelsets, and the time of reflection back is what is being timed. Doesn't matter that there are 40 more wheels to pass. It times each one and if goes by too quickly the stop arms come up.ROAR |
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