Analog variometer LUN 1183

illuminatedfor aircraft3-inch

Vertical Speed Indicators are precision instruments which provide indication of the rate of change in altitude. This arises from the difference between the static pressure and the pressure inside of the instrument, emerging during ascent or descent. The pressure differential deforms the membrane and this deformation is transmitted to the pointer. Ascent is indicated by clockwise rotation of the pointer; descent is indicated by counter clockwise rotation. This model has temperature compensation. A zero adjustment driver is located on the face of the case at the seven o´clock position. The range of indication is 0 - 16,000 ft/minute or 0 - 80 m/s. The instrument is also fitted with a turn indicator. This is an instrument measuring an angular velocity in the range of ± 5.6 °/s of the aircraft vertical axis which corresponds to the parameters of the turn performed at a speed of 190 kts (350 km/h) at a bank of 45°. The turn indicator incorporates a liquid level indicating a slip during the turn. There is also a version with an illuminated instrument face (supply voltage: 5, 14, 28 VDC - according to customer requirements).