TM 5-6675-323-14
(7) Hold tracer arm in place and turn wheels on planimeter so that wheel axle
forms 90 degree angle with tracer arm.
(8) Press point of Y-shaped test rule into paper on horizontal line.
(9) Place lens tracing assembly so that recessed end of Y-shaped test rule
rests against edge of lens.
(10) Press edge of lens so that it rides against inside edges of test rule
recess.
(11) Clear auto-scaler by pressing and releasing foot switch.
NOTE
If planimeter is allowed to slip, area measured will not be actual area
of test rule, and results will be inaccurate.
( 1 2 ) K e e p l e n s f i r m l y p r e s s e d a g a i n s t t e s t r u l e . S l o w l y trace 360 degree
c i r c l e by moving lens around center o f t e s t r u l e . S t o p w h e n y o u r e t u r n t o s t a r t i n g
point.
Reposition test rule at different
(13) Repeat steps (9) through (12) four times.
point-on-line-after three rneasurernents.-
(14) Average the pulse counts shown on the LED display after test measurement
t o o b t a i n RT v a l u e .
NOTE
If QPS is being initially alined with premarked tracer arm lengths, compare
a v e r a g e RT value to R T v a l u e f o u n d o n C a l i b r a t i o n R e c o r d S h e e t p r o v i d e d
with equipment.
Move lens tracer in 1/4 inch increment to bring "RT value" within RT value
found on Calibration Record Sheet provided with equipment.
I f a v e r a g e RT v a l u e i s n o t w i t h i n 0 . 2 % o f f a c t o r y d e t e r m i n e d RT v a l u e
the planimeter may be defective. Repeat alinement procedure. Notify
direct/general support maintenance for service or replacement.
I f u s i n g p r e p r o g r a m m e d c a r d s , m a n u a l c a l c u l a t i o n o f CA ( c a l i b r a t i o n c o n s t a n t )
is not necessary.
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