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Pressure Indicators and Switches

Dual Pressure Gauge 2x6 MPa - Model LUN 1446

     Flight instrument designed to measure gas pressure (air, nitrogen) or hydraulic fluids in aircraft.  It can be situated on the interior surface of the fuselage or on the control panel. On the dial both pressure gauges have their own scales with the maximum pressure in the upper part and the zero value in the lower part of the instrument.

Specification and Model Designation

Technical drawing - Standard

Dual Pressure Gauge  2x25 MPa - Model LUN 1449

       Flight instrument designed to measure gas pressure (air, nitrogen) or hydraulic fluids in aircraft.  It can be situated on the interior surface of the fuselage or on the control panel. On the dial both pressure gauges have their own scales with the maximum pressure in the upper part and the zero value in the lower part of the instrument.

Specification and Model Designation

Technical drawing - Standard

Differential Pressure Signaller - Model LUN 1491

       The differential pressure signaller is a manometric membrane instrument with a quick-break switch that signals when pressure differential nominal value is reached. The pressure differential is the difference of pressure values entering the signaller. The signaller is designed for use in the aircraft to signal a pressure differential in connection with most aeronautical fuels and oils.

Specification and Model Designation

Technical drawing - variant 1 and variant 2

Pressure Switch - Model LUN 1492

       The pressure switch connected to a pneumatic or hydraulic system is used to switch on/off, or to switch electrical circuits through a manometric element that controls a quick-break switch. As a working media one can use all kinds of aeronautical fuels and oils and other fluids, which are not more corrosive than water, and all gases that are not more corrosive than air (e.g. nitrogen). Pressure switches are divided into two groups according to the case design and into a few subgroups by operation range, adjustment tolerance, difference and max. pressure. The operating pressure is between 0.01 and 29.0 MPa.

Specification and Model Designation

Technical drawing - variant 1 and variant 2