Spoked Pulley
When a Spoked Pulley is used to measure Speed at A, the measurements shown are for
instantaneous speed i.e. it took this amount of time to travel this distance and the speed was
The measurements for the Data Harvest Spoked Pulley are pre-defined.
Set up the investigation but do not press enter on
EASY
SENSE
Q
Advanced until
you are ready to take readings (the spokes on the pulley can easily interrupt the
Light Gate beam and create false results). When all is ready press enter on the
EASY
SENSE
Q
Advanced unit for the recording to start (the symbol will disappear
from the first line).
The blue buttons can be used to scroll through and examine the readings already taken.
Speed at A or B
A measurement is taken each time a signal change is detected (when an object passes through)
either
sensor 5:A
or
sensor 6:B. The current measurement from A or B will be displayed on the LCD
screen.
3 Speeds at A or B
Three measurements will be taken for a signal change at either sensor 5:A and/or sensor 6:B. E.g.
for elastic or inelastic collision investigations. The latest measurement from A or B will be displayed
on the LCD screen.
Speed from A to B
Timing will start when a signal change is detected at sensor 5:A and stops when the signal at 6:B
changes (so it measures the speed of an object to travel from sensor A to sensor B).
The blue buttons can be used to scroll through and examine the readings already taken.
38
