Oil Pressure Sensor - Rotax 912 ULS 3 Installation Manual

21.3) Oil pressure sensor

See Fig. 88 and 89.
- location: oil pump housing
- wiring connection for instrument:
The sensor cable is approx. 3 m long and has 3 leads. The Black lead is not
to be connected and has no function. The Red lead from the sensor has to
be connected to the positive bus via a fuse or circuit breaker. The White lead
(output signal) has to be connected directly to the instrument. See also the
relevant instructions of the instrument supplier/aircraft manufacturer for
correct connection and wiring.
◆ NOTE:
- wire gauge:
- cable length:
- operating temperature range:
- grounding:
- output signal:
which was providing the signal on the basis of a sensor resistance variation, the
new oil pressure sensor (1) operates on basis of a current variation. This has
to be taken into account for the selection of the appropriate cockpit instrument.
■ CAUTION:
Fig. 88
1
08379
Effectivity: 912 Series
Edition 1 / Rev. 1
BRP-Powertrain
INSTALLATION MANUAL
The sensor cable can be modified in its length according to the
installation situation, e.g. shortened or extended. For extension
an appropriate, commercially available cable can be used. A
resistance cable or similar is not necessary.
stranded wire, 0,5 mm
3 m (118 in.)
min.: - 40 °C (-40 °F)
max.: + 125 °C (+ 257 °F)
via engine block/airframe ground
In contrary to the oil pressure sensor offered up to now,
The graph current over pressure has been determined, and is
effective at the following conditions only (see fig. 89).
ambient temperature:
tolerance:
- tightening torque:
(mA) 25
20
15
10
5
Fig. 89
0
08442
2
(AWG 20)
20 °C (68 °F)
max. ± 3%
15 Nm (98 in.lb) and
LOCTITE 243
2 4 6 8 10
(bar)
page 129
May 01/2009