MIL-DTL-9395/49
REQUIREMENTS:
Dimensions and configuration: See figure 1.
Weight: Not to exceed 1 pound (453.6 grams).
Calibration: Switch shall activate at 24.5 ± .5 inches Hga on decreasing pressure with a differential of
3.5 ±1 inches Hga. After factory calibration thread lock shall be used on the adjustment
port threads.
Proof pressure: 65 inches Hga.
System pressure: Not applicable.
Burst pressure: Not applicable.
Electrical ratings:
Operating voltage: 28 V dc.
Current rating: 5 amperes resistive.
Seal:
Electrical chamber: Unsealed.
Pressure chamber: Hermetic.
Reference chamber: Unsealed.
Electrical connector: See figure 1.
Pressure port: See figure 1.
Media: Air.
High temperature (operating and nonoperating): A (+160°F).
Low temperature (operating and nonoperating): D (-65°F).
Altitude: C (70,000 ft).
Shock: A (50 G).
Vibration: S (test condition A, 10-500 Hz, 10 G):
Life mechanical: A (100,000 cycles).
Life electrical: B (25,000 cycles).
Acceleration: C (8 G).
Pulsation amplitude: A (0 %).
Pulsation frequency: A (0 Hz).
Dielectric withstanding voltage (at reduced barometric pressure): Applicable.
Connector torque: Applicable
Terminal strength: Applicable.
Marking: The pressure switch case shall be permanently marked "LOW PRESSURE WARNING
SWITCH" and "24.5 +/- 0.5 In Hga" on the side opposite the mounting screws. In addition, the
pressure port end of the unit shall be marked as follows: "CAUTION: DO NOT BLOW IN PRESSURE
PORT"
Part number: M9395/49-01.
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