Potentiometer Accuracy

TB 9-4920-364-35

Figure 1. Potentiometer - equipment setup.

(2) Place thermometer near the output of calibrator. Wait 10 minutes and record

temperature.

(3) Position controls as listed in (a) through (c) below:

(a) SELECTOR SWITCH SW-1 to T/C.

(b) SW-5 switch (located on BH 123-3) to JETCAL.

(4) Adjust GALVO-1 MECH. ZERO control until GALVO-1 indicates 0. Repeat as

necessary throughout procedure.

(5) Adjust °C control for a 0 dial indication.

NOTE

Throughout this procedure it will be necessary to constantly

check the ambient temperature to assure that millivolt values

in table 3 are applicable.

(6) Refer to table 3 and adjust calibrator to millivolt value corresponding to

temperature recorded in (2) above.