SAE AS390
SAE AS390 1996-NOV-01 Ptot or Ptot-Statc Pressure Tubes Electrcally Heated Turbne Powered Sub-Sonc Arcraft
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This aerospace standard covers the following basic instrument types:
Type I - Pitot Pressure, straight and L-shaped."28 and 115 volt, 60 to 400 cycles AC or DC", 1 or 2 wire circuit.
Type II - Pitot and Static Pressures, straight and L-shaped. "28 and 115 volt, 60 to 400 cycle AC or DC", 1 or 2 wire circuit.