 |
|||
|
|
|||
| ||||||||||
|
|  MIL-Q-48555A(AR)
Adapter number
Knob
B11747940
Correction Counter
Elevation
B11747939
All readings shall be centered and a
4.9 Counter
numerals.
standard measuring scale shall be used to determine numeral (digit)
aligament within the linear value specified in 3.13.
4.1O
Illumination.
Level
vial.
The level vial illumination test shall be
4.10.1
performed under simulated conditions specified in 3.14.1. Place the
instrument in a dark room having a controlled light source. The
observer and instrument must become dark adapted. When this has been
accomplished, the unaided eye shall be capable of distinguishing the
level vial bubble and markings at various light levels that simulate
dusk into darkness.
4.10.2 C o u n t e r s .
Perform this test in conjunction with the
test in 4.10.1. The unaided eye shall be capable of determining the
counter numerals and numeral alignment at various light levels that
simulate the light conditions of 3.14.2.
4.10.3 External tritium contamination.
Contamination test shall
be performed by wiping the quadrant with filter paper moistened in
distilled water.
The wiping shall be performed with moderate finger
The damp filter paper shall be placed in a container with
pressure.
The scintillating system
the proper portion of scintillation liquid.
used to measure contamination must be calibrated. The read out shall
be within 10% of the known standard value when counted to a total of
2000 disintegrations. The actual test for determining contamination
is performed by placing the container into the scintillation system.
The measured contamination shall be within the limits specified in
3.14.3.
4.11 Cleanliness.
The quadrant under test shall be subjected
to a visual examination to determine conformance to the requirements
outlined in 3.9.
4.12.1 Storage and operating temperatures. The quadrant shall
be subjected to one cycle of temperature variations in accordance
with Table 111. Upon-completion-of sequence 1 and 4 soak periods,
(storage), the quadrant shall be visually and tactually examined to
insure conformance with requirements of 3.6.1. Upon completion of
sequence 2 and 4 soak periods, (operating), the quadrant shall be
14
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals