TB 9-4920-454-35
(3) Connect multimeter between (+) and (-) eyelets on BH-822 adapter. (If adapter
is for D'Arsonval type indicator, A is (+) and B is (-).)
(4) Turn A/C IND ADJ potentiometer from ccw to cw end while observing
multimeter indications. Range on potentiometer should be approximately 0 to 65 mV dc
and there should be no open spots throughout the range. During this check, with
TEMPERATURE switch set to OPERATE, TEMP oC, indicator should follow setting of
potentiometer and display readings throughout range of ambient temperature to 1399 oC.
(5) Set RESISTANCE & A/C INDICATOR CHECK switch successively to 8 Ω, 15 Ω, and
22 Ω positions. In each of the positions the multimeter will indicate higher values than
when RESISTANCE & A/C INDICATOR CHECK switch is in NULL BAL position.
b. Adjustments. No adjustments can be made.
16. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.
