Magnetic Damping; How To Weigh - RCBS M500 Product Instructions

Photo 21: Top pointer at 0.5 grains above reference target load
Photo 22: Bottom pointer at 0.5 grains below reference target load

MAGNETIC DAMPING

The M500 scale is equipped with magnetic damping which causes the beam to
come to rest quickly without affecting sensitivity or accuracy. It operates on the
principle of a permanent magnetic field resisting the motion of a non-magnetic
copper damper vane attached to the beam.
The damping magnets are positioned inside the base on both sides of the slot in
which the damper vane travels.
The only maintenance required is to keep this slot free of magnetic particles which
could interfere with free movement of the damper vane. The magnetic damping is
effective at all loads and will speed up weighing.

hOW TO WEIGh

To weigh an unknown load, place the load in the scale pan. Move the main poise to
the first notch, which causes the beam pointer to drop below the center reference
pointer, and then move it back one notch. Then move the small poise to the notch to
bring the beam pointer to the center reference pointer. The weight of the unknown
load is the sum of the two poise readings (Photo 23).
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