Toggle in FULL REF. position (must be held in
this position): ac line voltage is applied to power
supply. Indicating meter is connected across entire
transmitter voltage divider and cabling for system
calibration.
CALIBRATE POTENTIOMETER. Screw-
driver adjusted, with toggle switch held at FULL
REF. position, it is adjusted to provide 10 volts dc
across the entire transmitter, voltage divider, and ca-
bling, as indicated by a full-scale meter reading. With
the potentiometer properly adjusted. when the toggle
switch is placed in the FULL REF. position, a full-
scale meter reading indicates that all cables and elec-
trical connections are good.
ELECTRICAL SLOSH DAMPENER. To
prevent meter fluctuation as a result of erratic float
Figure 4-46.—Primary and secondary receivers.
4-55
