Winter Instruments Altimeter
Winter Instruments Altimeter
Winter Instruments Altimeters
General Description
Winter Instruments Altimeter - Developed especially for gliding, the 4 FGH 40 (4030 – 4555) altimeter shows absolute altitude and relevant flight level within a range of 0 – 20,000′ or 0 – 10,000 m. The instrument works by measuring the static air pressure using an elastic diaphragm cell (aneroid cell). A rotary knob is provided for the Millibar or HG setting.
Altimeters measure static air pressure, which decreases with altitude. The pressure-sensitive measuring element is a diaphragm capsule from which the air has been removed (aneroid capsule), which reacts to the effect of changing air pressure as the aircraft changes altitude. Tempered, aged copper-beryllium diaphragms ensure highly accurate readings. Diaphragm movement is transmitted to the instrument pointers by a linkage and gearwheels – the whole is insensitive to shock and vibration. A bimetal link compensates for the effects of temperature change.
The most popular Winter Altimeter in the USA is the 57 mm 4 FGH 40 Item # 4555.
Wing & Wheels stocks the altimeters highlighted in yellow in the table. Other Altimeters please allow approximately four weeks Winter production time.
Features
High measuring precisions, temperature compensation, linear dial-gauge-gradations, insensitive to shock and vibration, simple zero adjustment.
Maintenance Instructions
Leak testing should be carried out at least every 2 years. Otherwise, the instrument does not require any maintenance.
Accompanying Documents
-
New Instrument
Test certificate EASA Form One, POE
Installation and maintenance instructions -
Used Instrument
Test certificate EASA Form One, POE
Winter Altimeter price varies depending on selection above.
| Item # | Range | Sub Dial | Diameter | Install Depth | Weight |
|
4030 4 HM |
0 – 3.000 m | Millibar | 80 mm ø | 79 mm | 0,230 kg |
|
4060 4 HM 6 |
0 – 6.000 m | Millibar | 80 mm ø | 79 mm | 0,230 kg |
|
4110 4 FGH 10 |
0 – 1.000 – 10.000 m | Millibar | 80 mm ø | 103 mm | 0,330 kg |
|
4200 4 HM 6 |
0 – 20.000′ | Millibar | 80 mm ø | 79 mm | 0,230 kg |
|
4220 4 FGH 20 |
0 – 1.000 – 10.000 m | Millibar | 57 mm ø | 106 mm | 0,235 kg |
|
4320 4 FGH10 |
0 – 1.000 – 20.000′ | Millibar | 80 mm ø | 103 mm | 0,345 kg |
|
4325 4 FGH 10 |
0 – 1.000 – 20.000′ | inch HG | 80 mm ø | 103 mm | 0,345 kg |
|
4550 4 FGH 40 |
0 – 1.000 – 20.000′ | Millibar | 57 mm ø | 106 mm | 0,235 kg |
|
4555 4 FGH 40 |
0 – 1.000 – 20.000′ | inch HG | 57 mm ø | 106 mm | 0,235 kg |
