MIL-PRF-46374G
TABLE I. Operating environment.
Environment
Limits
Duration
Amplitude of 0.762 ± 0.127 mm
20 minutes with vibration
Simple harmonic vibration
(1.524 ± 0.254 mm total excursion)
perpendicular to dial
Amplitude of 0.030 ± 0.005 inch
20 minutes with vibration
(0.060 ± 0.010 inches total excursion) in plane of dial and in
direction from 12 to 6
Frequencies varied uniformly between
20 minutes with vibration
30 Hz to 60 Hz to 30 Hz
in plane of dial and in
direction from 9 to 3
Shock
Drop from height of 50 cm (19.7
Once
inches), uncontrolled, onto vinyl tile 3
mm (1/8 inch) thick affixed to
concrete block
-45 °C ± 1.1 °C (-50 °F ± 2 °F)
24 hours
Storage
15.5 °C to 32.2 °C (60 °F to 90 °F)
24 hours
60 °C ± 1.1 °C (140 °F ± 2 °F) and
24 hours
≥50 percent relative humidity
15.5 °C to 32.2 °C (60 °F to 90 °F)
24 hours
5 minutes
Water resistance
Complete immersion in distilled water
with approximately 1 percent by
weight wetting solution under one
atmosphere (14.7 psi) and at room
temperature
5 minutes
Complete immersion in distilled water
with approximately 1 percent by
weight wetting solution under three
atmospheres (44.1 psi) and at room
temperature
Water leakage
Submerged in a measured volume of
24 hours
distilled or deionized water, equal to
approximately 10 times the volume of
the watch, at 23 °C ± 1 °C
(73 °F ± 3 °F)
Magnetism, type I
14.5 to 15.5 Gauss magnetic field,
10 cycles of 3 seconds on
stem parallel to direction of field
- 3 seconds off
125 ± 1 Gauss magnetic field, stem
Magnetism, types II and III
10 minutes
parallel to direction of field
5
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