Cabin Altitude & Differential Pressure

Cabin Altitude & Differential Pressures

3000 Series

Specification UI3000

The Indicator is a dual function unit displaying two pressure indications from two independent mechanisms. The outer scale displays the pressure inside the cabin in feet of altitude. The inner scale displays the difference in pressure between the inside and the outside of the cabin in pounds per square inch (PSI).

Case Configuration:	P/N 3000 and 3002 Series: MS33638, 2-Inch (Flange Type) P/N 3003 Series: MS 33639, 2-Inch (Clamp Type)
Typical Weight:	P/N 3000 and 3002 Series: 1.0 lb. P/N 3003 Series: 0.7 lb.
Range:	Cabin Altitude: 0 to 50,000 ft maximum Cabin Differential: 0 to 10 PSI
Finish:	Exterior-Lusterless Black or gray
Lighting:	P/N 3000 Series: Available upon request. P/N 3002 and 3003 Series: Internally back lighted 5, 14 or 28 VDC

3300 Series

The Indicator is a triple function unit displaying three indications. The inner scale displays the pressure inside the cabin in feet of altitude. The upper right side scale displays the difference in pressure between the inside and the outside of the cabin in pounds per square inch. The left side scale displays the rate of climb in feet per minute ascent or descent.

Case Configuration:	3ATI, ARINC 33638 or MS33549, 3-Inch (Flange Type)
Typical Weight:	1.0 pounds
Range:	Cabin Altitude: 0 to 50,000 ft maximum Cabin Differential: 0 to 10 PSI Cabin Rate of Climb: 0 to 2,000 feet per minute up or down
Finish:	Lusterless Black or Gray