MGL Avionics Stratomaster Ultra “L” Owner’s manual
Page 38
Oil temperature indicator (without oil pressure indicator)
Enabling the oil temperature display is done in the Engine detail setup menu.
Select the label for the oil temperature channel to “OILT”.
The RDAC IV EIS can interface to the oil temperature sender used in Rotax
912/914 engines. This is a standard sender that can be obtained from
automotive spares outlets.
The Rotax sender exhibits a resistance of 100 ohms at 85 degrees C and 1000
ohms at 20 degrees C.
It is also possible to use the MGL precision semiconductor sender instead of a
standard automotive sender. This sender, although more expensive, is very
accurate and does not suffer from the wide tolerances of standard automotive
components. You need to select the type of sender used for the oil pressure in
the “sender setup menu”. The default sender selected is the standard automotive
type.
EGT and CHT thermocouple display
The RDAC IV EIS makes four thermocouple channels
available. These can be used for EGT probes (exhaust
gas temperature) or cylinder head probes (typically the
spark plug washer types).
You determine how and if these channels are used in the
“engine detail setup menu”. You can enable/disable
individual channels, set the indicated temperature range
for every channel and you can select the alarm level to
monitor.
Most thermocouple senders are known as K types. These
can be used with the RDAC IV. Some CHT probes used
mainly in the U.S. may be “J types”. These can also be
used but you need to select this type in the “sender setup
menu”. Note that you may use a mixture of K and J type probes if you so require.
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