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<blockquote data-quote="Sandpatch" data-source="post: 125581" data-attributes="member: 10543"><p>Hotbox detectors use ifrared beams to sense wheel bearing temperatures. If an overheated bearing is sensed, the detector will make a radio transmission. Yes, it's wireless and here's an example of what's heard when all is well:</p><p></p><p><a href="http://www.youtube.com/watch?v=qJtQnH7MKXw" target="_blank">CN Hotbox Detector Stillwell, IN Recording - YouTube</a></p><p></p><p>Here's what's heard when all is not well:</p><p></p><p><a href="http://www.youtube.com/watch?v=tz-419GO3_0" target="_blank">WV189.7 NS Defect Detector Hotbox Alarm June 22 2012 - YouTube</a></p><p></p><p>Each railroad has a different style of broadcast. Yes, detectors for bearing termpartures, wheel temperatures, shifted loads and dragging equipment (like brake rigging that's fallen away) are stationary.</p></blockquote><p></p>
[QUOTE="Sandpatch, post: 125581, member: 10543"] Hotbox detectors use ifrared beams to sense wheel bearing temperatures. If an overheated bearing is sensed, the detector will make a radio transmission. Yes, it's wireless and here's an example of what's heard when all is well: [url=http://www.youtube.com/watch?v=qJtQnH7MKXw]CN Hotbox Detector Stillwell, IN Recording - YouTube[/url] Here's what's heard when all is not well: [url=http://www.youtube.com/watch?v=tz-419GO3_0]WV189.7 NS Defect Detector Hotbox Alarm June 22 2012 - YouTube[/url] Each railroad has a different style of broadcast. Yes, detectors for bearing termpartures, wheel temperatures, shifted loads and dragging equipment (like brake rigging that's fallen away) are stationary. [/QUOTE]
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