MIL-DTL-5790H
3.5 Workmanship. The transmitter shall be constructed and finished in a thoroughly
workmanlike manner. Particular attention shall be given to neatness and thoroughness of
soldering, wiring, marking of parts and assemblies, plating, painting, riveting, machine screw
assembly, welding, brazing, and freedom of parts from burrs and sharp edges.
3.6 Performance. The transmitter shall meet the performance requirements specified in 3.6.1
through 3.6.10 and operate within the tolerances specified in tables I and II for scale error, friction
error, position error, and pointer error.
TABLE I. Scale error tolerances (± psi).
Low temperature, high
Test pressure
Room
Vibration,
temperature, seasoning
(psi)
temperature
overpressure
endurance, and altitude tests
0
3.0
4.0
5.0
50
3.0
4.0
5.0
100
4.0
5.0
6.0
150
4.0
5.0
6.0
200
4.0
5.0
6.0
TABLE II. Friction, position, and pointer error tolerances (± psi).
Tolerance ± psi
Test
Friction
Room temperature
3.0
High temperature
5.0
Low temperature
5.0
Position error at 100 psi
1.0
Vibration
Pointer oscillation
3.0
3.6.1 Case leakage. The case leakage of the transmitter shall be no greater than 0.10
micron cubic foot per hour when the filling medium is nitrogen and helium, and no greater than
1.0 micron cubic foot per hour when the medium is 100 percent helium.
3.6.2 Electromagnetic interference. The transmitter shall meet the electromagnetic
interference requirements of MIL-STD-461 for equipment and subsystems installed in, on, or
launched from Air Force aircraft.
3.6.3 Overpressure. The transmitter shall withstand a pressure of 400 psi for a period of
10 minutes.
3.6.4 Indicator operation. The transmitter shall be capable of operating two MIL-I-7087
indicators without a change in performance.
5
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