Detector rise time: <500 ns
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This Smart Pulley comprises of a Pulley and a photogate.
It is used to measure speed of moving objects by connecting them with a wire to
the pulley. The pulley rotates with the same (linear) velocity as the moving object.
The rod included with the photogate can be threaded into the hole in the photogate and to provide a convenient way of mounting the photogate. The rod can be mounted to a ring stand using standard laboratory clamps. The rod can also be attached to the photogate by running the thread of the rod through the larger hole in the photogate and threading it on a I/4 inch nut.
Clamp the photogate to a support rod or mounting bracket. Position the
photogate so the object to be timed will pass through the photogate, blocking
the beam. Plug the RJ12 phone plug from the cable assembly into the modular
phone jack on the photogate housing. Plug the MiniDin plug at the other end of
the cable assembly into the MultiLog. Test the operation of the photogate by
watching the LED when the beam is blocked. The LED should go on when the
photogate is blocked.
The Super Pulley Accessory connects to the photogate by
using the Metal Rod. Place the rod through the hole in the photogate and move
the pulley into position so that the rod can be threaded into it. Tighten up the
rod so that the pulley is held firmly against the photogate. When properly
positioned, the spokes of the pulley, will block the infrared beam of the
photogate, each time the spokes pass by.
The Photogate has a narrow, infrared beam and fast response time, which provide very accurate signals for timing. When the infrared beam between the source and detector is blocked by the pulley, the output of the photogate is low, and the light-emitting diode (LED) on the photogate goes ON. When the beam is not blocked, the output is high, and the LED is OFF. The process of "block-unblock" of the infrared beam produces pulses on the pulley output. The MultiLog counts these pulses and in order to preserve the accuray over time it also integrate them.
Note: Please notice that as the DT 053 is a digital sensor, it cannot operate simultaneously with "Digital Output" nature sensors (Sonic Ranger, Control Out).
The DT053 sensor is mainly used in physics mechanics experiments, to measure velocity and acceleration of moving objects and learn the Newton Laws of forces.
Detector rise time: <500 ns