S
S
T
T
A
A
N
N
D
D
A
A
R
R
D
D
P
P
R
R
E
E
C
C
I
I
S
S
I
I
O
O
N
N
A
A
L
L
T
T
I
I
M
M
E
E
T
T
E
E
R
R
W
W
I
I
N
N
T
T
E
E
R
R
4
4
F
F
G
G
H
H
1
1
0
0
Application
2-pointer altimeter for measuring absolute und relative altitudes in
the
0-10 000 m or 0-20 000 ft range.
Indicating range:
item No. 4110: 0-1000-10 000 m
item No. 4320: 0-1000-20 000 ft
Gradations:
item No. 4110: large pointer 10 m, small pointer 100 m, 3rd
pointer 5000 ft
item No. 4320: large pointer 20 ft, small pointer 200 ft, 3rd pointer
5000 ft
Technical data
Airtight, black plastic housing. Connection via hose from static pressure sensor to hose connector on rear.
Kollsman window with millibar scale, reading from 940 to 1050 millibars. See scale drawing for installation
dimensions. Weight 0,330 kg. Linear scale
The 4 FGH 10 altimeter can be fitted withp a scale ring.
Scale Ring
Prior to a cross-country flight, the altimeter is usually set to field
elevation.
Atmospheric pressure reduced to pressure at sea level (QNH
pressure) is then indicated in the Kollsman window. Throughout
the flight, the altimeter reads height above sea level.
In many instances, it is also desirable to know one’s relative
altitude above a defined landmark, as well as height above sea
level. On a final approach, for example, it es essential to know
one’s height above the landing field at any given time.
Once the arrow on the rotatable scale ring has been set to the
elevation of the landing field, altitude above the field can be read
off the gradations at any time until touchdown (redaing
corresponds to the QFE setting).
Further applications include the safe crossing of ground obstacles
(mountain ranges) or control zones, cases in which the difference in altitude can be read directly once the
ring has been correctly adjusted.
The scale ring has also proved particularly useful for destination approach calculations in performance
gliding.
Summary of Contents for DG 202
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Page 47: ...DG200 15m 17m DG 202 FLIGHT INSTRUMENTS DG Flugzeugbau GmbH ...
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Page 49: ...DG200 15m 17m DG 202 FLIGHT INSTRUMENTS DG Flugzeugbau GmbH ...
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Page 51: ...Edition 01 2007 Page 1 of 16 BOHLI COMPASS 46 MFK 1 Description page 2 Installation page 10 ...
Page 65: ...Manual Compass 46 MFK 1 BOHLI MAGNETTECHNIK AG Edition 01 2007 Page 15 of 16 ...
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