Reference
Modification-No.
- 0 -
Page
93
Date
1996 05 10
Install
914 F
23) Connections for instrumentation
These connections to be established in accordance to certification and/or national specifica-
tions.
The certification for connections and connection lines have to be conducted by the aircraft
builder to the latest requirements like FAR and JAR.
For notes regarding the electric rev-counter consult the chapter 19.4.13.
23.1) Sensor for cylinder head temperature:
See Ill. 71/72.
◆
NOTE:
A direct reading of the coolant temperature is not provided for.
The temperature sensor
Q
is directly fitted into cylinder head i.e. a direct temperature
reading of the cylinder head material is taken. This allows the exact measuring of the
cylinder head temperature even in the case of coolant loss.
◆
NOTE:
Readings are taken on the hottest cylinder, depending on engine
installation.
➪
location:
in the cylinder head of the cylinders 2 and 3, see Ill. 4.
➪
connection:
plug for socket 6,3x0,8 to DIN 46247
➪
grounding:
via engine block
➪
graph of sensor resistance over temperature
■
ATTENTION: The graph resistance over temperature has been determined, and is
effective at the following conditions only.
ambient temperature:
20
°
C (68
°
F)
tolerance:
±
10%
◆
NOTE:
BOMBARDIER-ROTAX recommends the temperature indication
VDO instrument “VDO 310.274/082/017“ with an indicating range of
50
°
to 150
°
C (120
°
F - 300
°
F).
Ill. 72
120
100
80
60
40
20
140 160
1200
1000
(
Ω
) ohm
(
°
C)
800
600
400
200
0
A x e s
cylinder head
x axis
y axis
z axis
2
- 2 0 0 , 0
2 4 1 , 0
- 1 5 7 , 0
3
- 3 8 7 , 0
- 2 4 1 , 0
- 1 5 7 , 0
Ill. 71
1
Summary of Contents for 914 F
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