Measuring Linear Speeds; Measuring Surface Dimensions - General PCT2236B User Manual

around the end of the motor or generator shaft. Take care to
line up the shafts of the equipment and the tachometer. Using
the Measurement and MEM buttons , make and store as
many readings of rotational speed as you wish.

MEASURING LINEAR SPEEDS

To measure the linear speed of a conveyor belt, remove
the plastic sleeve and any rubber fitting inserted in it from the
tachometer's metal shaft. Locate the surface speed wheel and
install it on the tachometer's shaft, sliding the slot in the
wheel's stem over the tachometer shaft's metal pin.
Set the function switch to the "m/min " position . Then,
cradling the tachometer in your right hand, press the edge of
the surface wheel against the moving object whose linear
speed you wish to measure. Note that the circumference of
the wheel has a 1/8-in.-wide slot into which wire, cable or
rope of that diameter fits snugly.
Taking care to keep the tachometer perpendicular to the
moving conveyor, use the function and MEM buttons to make
and store as many measurements of linear speed as you wish.
Linear speed measurements of moving objects obtained by
placing them in contact with the outer diameter of the surface
speed measurements are accurate as displayed. However, to
compensate for the smaller inner diameter of the wheel within
its slot, measurements made by placing wire, cable or rope
within the slot should be multiplied by 0.9.

MEASURING SURFACE DIMENSIONS

The PCT2236B can also serve as a metric ruler. To operate it in
that mode, move the function switch to the "m" position and
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