The TrainSpotter makes detection of locomotives or rolling stock easy and reliable. Just place the sensor where its invisible light beam will reflect off the object of interest and you're done - no time-consuming or frustrating adjustments! Based on modern silicon technology, this reflective infrared proximity sensor is tolerant of ambient (background) lighting conditions, be it completely dark or under full lights, with no false triggering. Combined with a discrete under-track installation, this low-profile sensor solves many of the challenges that plague other optical detector products. Features Small size (0.25" x 2.25") Simple, discrete under-track installation No adjustment needed! Release time of zero or 5 seconds (solder jumper), custom times available Two opposite polarity, open-collector outputs (40V / 250mA capable) Tolerant of ambient (background) lighting conditions - no false triggering 24" pre-stripped wire leads attached to the sensor Powered from 5V to 24VDC Optional mounting bracket available Typical Applications Activate grade crossing signals Trigger sounds Build an automatic interchange Indicate end-of-track in hidden staging yards Detect block occupancy for signal systems C/MRI track occupancy inputs Installation The detector is designed to be installed up through the benchwork in a 3/8 inch (10 mm) hole. Because the sensor itself is so small, only a single hole is required and no complicated drilling jigs are needed. The sensor can be secured in the hole using a variety of methods such as hot glue or by using a bracket. A mounting bracket can be found here. Electrical Connections The CKT-IRSENSE needs 5 to 24 volts of clean direct current (DC) power to operate. Two opposite polarity outputs are provided, both of which are “open drain” (otherwise known as “open collector”) and act like a switch to the ground or negative lead. Logic level outputs can be generated by connecting a resistor to pull up the output to the positive supply. Other devices, such as LEDs or relays can also be driven directly and the outputs from multiple sensors can be connected in parallel to combine them into one signal. Specifications 2.25"(L) x 0.25"(W) x 0.25"(H) By default, the release time is zero, but can be set to 5 seconds by shorting two pads (JP1) on the back of board. Custom release times, including up to 23 minutes are also available - contact us for details. The sensing distance varies with the reflectivity of the object being sensed, but is typically 1.5".
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