Effectivity: 912 Series
Edition 1 / Rev. 1
d04641
page 129
May 01/2009
BRP-Powertrain
INSTALLATION MANUAL
0
5
10
15
20
25
246810
(bar)
(mA)
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: 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.
- wire gauge: stranded wire, 0,5 mm
2
(AWG 20)
- cable length: 3 m (118 in.)
- operating temperature range: min.: - 40 °C (-40 °F)
max.: + 125 °C (+ 257 °F)
- grounding: via engine block/airframe ground
- output signal: In contrary to the oil pressure sensor offered up to now,
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: The graph current over pressure has been determined, and is
effective at the following conditions only (see fig. 89).
ambient temperature: 20 °C (68 °F)
tolerance: max. ± 3%
- tightening torque: 15 Nm (98 in.lb) and
LOCTITE 243
Fig. 88
08379
1
Fig. 89
08442
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