Types of VAF Meters

There were two major types of VAF meters. The first design, is the oldest type. It uses battery voltage for supply voltage. With this type of VAF meter, as the measuring plate opens signal voltage increases.

VAF Signal Voltage

Two were two different VAF designs. The

newest type, second design, the voltage

decreases as the measuring plate opens.

Voltage of Battery

Vc -—► E2

= 14.0

5 0

Vc->E2

Vc<—► E2

to

-►Ea

>

Vs -—> E,

0

O) CO

/

Measuring Plate Opening -

£

/

First Design

T8 5 2f074/T8 52f075

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