Winter Variometers

Gebr. Winter GmbH & Co.KG
On-Board Devices for Aviation
Jungingen, Germany


Related Winter Pages:

Variometers
Vane type variometers measure the change in air pressure inherent to changes in altitude.  The instrument consists of a cylindrical chamber with a precision-ft baffle plate (vane) rotating on shockproof jewel bearings and centered by a coil spring.  The vane divides the chamber in two: one section is open to static pressure, while the other is connected to an expansion tank in which a volume of air is insulated against thermal effects.  Differences in pressure are compensated by the narrow gap between vane and chamber wall.  There is a change in static pressure when the aircraft climbs or descends, and a differential pressure is established between the two sections of the chamber.  The resultant deflection of the vane provides a measure of the vertical speed and this deflection is transferred to the pointer of the instrument.  The response rate of a variometer is important.  In high-performance gliding, thermals can be identified all the quicker and used all the more efficiently if the variometer responds without delay.

Defined as the length of time the instrument takes to reach 65% of its final reading in response to a sudden change in vertical speed, the time constant serves as a standard for gauging speed of response.  The faster a variometer responds, the smaller its time constant will be.

Vane type variometers with large measuring ranges such as the 5 StV 5 (± 20 knots and ± 30 knots) have small time constants.  The volume of the expansion tank must be increased in order to achieve comparable figures with variometers having the most common measuring range (± 10 knots).

Winter Variometers Details Table
The Winter Variometer Details Table contains a list of all the available variometers from Winter.  Winter variometers come in a wide variety of flavors.  I stock the most commonly used units which are highlighted in the table and included in the price list below.  But I can get any unit you desire. 

Variometer Options:

  • Ranges/Units
    •  ±10 knots
    • ±1000 ft/m
    • ±2 m/s
    • ±5 m/s
    • ±10 m/s
  • Scale Type
    • Linear - standard
    • Logarithmic - for more needle movement at weak lift and sink (0.90 L capacity flask)
  • Size
    • 80 mm (3 1/8")
    • 57 mm (2 1/4")
  • Response Speed
    • Standard - 3 second (0.45 L capacity flask)
    • Fast ("Sensitive") - 1.8 second (0.90 L capacity flask)
  • MacCready Ring

Winter-5251, Winter, Mechanical Variometer, 80mm, 5 m/s

Winter-5251, Winter, Mechanical Variometer, 80mm, 5 m/s

Mechanical Variometer, Vane Type, Model: 5 StV 580 mm (3 1/8")±5 m/s3 second response timeApplicatio..

$685.00

Winter-5252, Winter, Mechanical Variometer, 80mm, 1000 ft/min

Winter-5252, Winter, Mechanical Variometer, 80mm, 1000 ft/min

Mechanical Variometer, Vane Type, Model: 5 StV 5-280 mm (3 1/8")±1000 ft/min3 second response timeAp..

$685.00

Winter-5253, Winter, Mechanical Variometer, 80mm, 10 Knots - Most Popular

Winter-5253, Winter, Mechanical Variometer, 80mm, 10 Knots - Most Popular

Mechanical Variometer, Vane Type, Model: 5 StV 5-3 - Most Popular80 mm (3 1/8")±10 knots3 ..

$685.00

Winter-5282, Winter, Mechanical Variometer, Sensitive, 80mm, 1000 ft/min

Winter-5282, Winter, Mechanical Variometer, Sensitive, 80mm, 1000 ft/min

Mechanical Variometer, Vane Type, Model: 5 StV 5-2 "S" - Sensitive80 mm (3 1/8")±1000 ft/min1.8 seco..

$740.00

Winter-5283, Winter, Mechanical Variometer, Sensitive, 80mm, 10 knots

Winter-5283, Winter, Mechanical Variometer, Sensitive, 80mm, 10 knots

Mechanical Variometer, Vane Type, Model: 5 StV 5-3 "S" - Sensitive80 mm (3 1/8")±10 knots1.8 second ..

$740.00

Winter-5352, Winter, Mechanical Variometer, Logarithmic, Sensitive, 80mm, 1000 ft/min

Winter-5352, Winter, Mechanical Variometer, Logarithmic, Sensitive, 80mm, 1000 ft/min

Mechanical Variometer, Vane Type, Model: 5 StVL 5-2 - Logarithmic Scale - Sensitive80 mm (3 1/8")±10..

$780.00

Winter-5353, Winter, Mechanical Variometer, Logarithmic, Sensitive, 80mm, 10 Knots

Winter-5353, Winter, Mechanical Variometer, Logarithmic, Sensitive, 80mm, 10 Knots

Mechanical Variometer, Vane Type, Model: 5 StVL 5-3 - Logarithmic Scale - Sensitive80 mm (3 1/8")±10..

$780.00

Winter-5451, Winter, Mechanical Variometer, 57mm, 5 m/s

Winter-5451, Winter, Mechanical Variometer, 57mm, 5 m/s

Mechanical Variometer, Vane Type, Model: 5 StVM 557 mm (2 1/4")±5 m/s3 second response timeAppl..

$685.00

Winter-5452, Winter, Mechanical Variometer, 57mm, 1000 ft/min

Winter-5452, Winter, Mechanical Variometer, 57mm, 1000 ft/min

Mechanical Variometer, Vane Type, Model: 5 StVM 5-257 mm (2 1/4")±1000 ft/min3 second response ..

$685.00

Winter-5453, Winter, Mechanical Variometer, 57mm, 10 Knots - Most Popular

Winter-5453, Winter, Mechanical Variometer, 57mm, 10 Knots - Most Popular

Mechanical Variometer, Vane Type, Model: 5 StVM 5-3 - Most Popular57 mm (2 1/4")±10 knots,3 sec..

$685.00

Winter-5482, Winter, Mechanical Variometer, Sensitive, 57mm, 1000 ft/min

Winter-5482, Winter, Mechanical Variometer, Sensitive, 57mm, 1000 ft/min

Mechanical Variometer, Vane Type, Model: 5 StVM 5-2 "S" - Sensitive57 mm (2 1/4")±1000 ft/min1.8 sec..

$740.00

Winter-5483, Winter, Mechanical Variometer, Sensitive, 57mm, 10 Knots

Winter-5483, Winter, Mechanical Variometer, Sensitive, 57mm, 10 Knots

Mechanical Variometer, Vane Type, Model: 5 StVM 5-3 "S" - Sensitive57 mm (2 1/4")±10 knots..

$740.00

Winter-5552, Winter, Mechanical Variometer, Logarithmic, Sensitive, 57mm, 1000 ft/min

Winter-5552, Winter, Mechanical Variometer, Logarithmic, Sensitive, 57mm, 1000 ft/min

Mechanical Variometer, Vane Type, Model: 5 StVLM 5-2 - Logarithmic Scale - Sensitive57 mm (2 1/4")±1..

$780.00

Winter-5553, Winter, Mechanical Variometer, Logarithmic, Sensitive, 57mm, 10 Knots

Winter-5553, Winter, Mechanical Variometer, Logarithmic, Sensitive, 57mm, 10 Knots

Mechanical Variometer, Vane Type, Model: 5 StVLM 5-3 - Logarithmic Scale - Sensitive57 mm (2 1/4")±1..

$780.00

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