TM 5-6675-319-14
( 2 ) S h u t t i n g u n i t d o w n.
(a) Turn off power switch.
(b) Unplug power cord.
(c) Loosen clamp and remove liquid mixer from tank.
b . S e n s i t o m e t e r .
NOTE
If lithographic emulsions are being used, set intensity switch to HIGH.
For other types of film, including high speed, use LOW position.
(1) Plug in densitometer to 120 V ac.
NOTE
Strap or block unit in place to prevent knocking unit over in dark.
( 2 ) T u r n o f f r o o m l i g h t s .
(3) Lift pressure plate and insert film exposure, emulsion side down, until
film hits two stops squarely.
NOTE
Film edge in sensitometric area should not be fogged or otherwise exposed.
(4) Adjust stops using thumbnuts to position exposure at very edge of film
or 0.5 in. (12.7 mm) in from edge of film.
NOTE
Unit will hum slightly during exposure cycle. For multiple exposures, keep
start switch depressed for more than 1.5 seconds.
(5) Momentarily depress start switch.
(6) After exposure cycle is complete, lift pressure plate and remove film.
Film is now ready to be processed manually or automatically.
CAUTION
On successive exposures to obtain maximum exposure reproducibility,
allow at least 10 seconds between exposures to allow lamp elements to
cool.
11-13
