David,

The transmitter plate connects up to the pendulum. This plate is placed
between the two receiver antenna plates. The transmitter plate swings toward
either of the two receiver plates. There is no harm if the transmitter plate
touches either of the receivers but the sensor will saturate will before
this can happen. Only moving the sensor or a large local event would make
the plates touch.

Hope this helps.

-Larry Cochrane
Redwood City, PSN

> Which directions does the pendulum of an SG sensor swing, towards the
either
> of the plates or between them? And how do you ensure that they never
touch?
> Thanks,
>
> David


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