USE WITH LINEAR SPEED WHEEL.

Figure 2-1.

Synchronization of Type 1531 Strobotac with rotating cam, using Type

1531-P2 Flash Delay ond Type 1536 Photoelectric Pickoff.

2.9.3 USE WITH LINEAR SPEED WHEEL.

The Type 1531-P3 Linear Speed Wheel is used with the Type 1531

for accurate measurement of linear speeds of moving objects, such as

belts. This combination can also be used to determine the surface speeds

of rotating devices, such as wheels, drums, rollers, etc., as well as

the relative speeds of multiple V-belts and other groups of moving ob-

The Linear Speed Wheel consists of two black nylon wheels of

difrerent diameters, freely turning on opposite ends of a steel rod. The

three six-inch rod sections supplied have threaded ends so that one, two,

or three lengths can be used. A 1/16-inch white radial strip and the pro-

per speed-ratio data are marked on the surface of each wheel.

In use, the selected wheel is pressed against the moving object

whose linear or surface speed is to be measured, and the rotating wheel

is illuminated by the flashing light of the stroboscope. The dial of the