Dynon Avionics EMS-D10 Installation Guide - Manual (Page 52)

EMS Configuration
Exhaust Gas Temperature (EGT)
Select the alarm mode and the analog bar thresholds as
described in Alarm and Color Threshold Configuration on
page 5-2. If one or more EGT thermocouples have been
installed, set the DISPLAY parameter to ON; if no EGT
thermocouples are installed, set it to OFF. There is no need
to set a sensor type; any K-type thermocouple will work for
this input.
In addition to the configuration of the color thresholds, you
can configure the top and bottom of the EGT/CHT analog
scales independently. This allows you to show a narrower
region of interest on the analog gauges to ensure easy detection of minor differences between
cylinders. The TOP OF SCALE parameter defines the highest temperature displayed on the EGT
analog gauge; The BOT OF SCALE parameter defines the lowest temperature displayed on the
EGT analog gauge; the SCALE SECTIONS defines the number of sections into which the entire
scale range is divided. Set the TOP OF SCALE, BOT OF SCALE, and SCALE SECTIONS to
suit your needs.
For all SPLIT cylinder displays (2 cylinders only), you can set the SCALE SECTIONS for EGT
and CHT independent of each other. For COMBD displays, EGT and CHT SCALE SECTIONS
are tied together as the two sets of measurements are displayed on the same graph.
SPAN ALARMS
You may configure alarms based on the overall temperature
span between the hottest and coolest cylinders’ EGTs. The
span alarm configuration is located on the second page;
press DOWN▼ from the bottom of page 1. First, press
SEL► to toggle the DETECT setting to ON. Like other
alarms, you can cycle ALARM through SELF-CLEAR,
LATCHING, and OFF. See Alarm and Color Threshold
Configuration on page 5-2 for definitions of those
functions. Next, configure the MAX SPAN (the maximum
temperature difference between hottest and coolest
cylinders, in the units shown at the top of the menu) during non-leaning conditions. Next,
configure the maximum span while leaning in the WHEN LEANING section. If you do not wish
to have a different span alarm value while leaning, you must still configure this value to equal
that of MAX SPAN. When the difference between your hottest and coldest cylinders’ EGTs is
greater than the MAX SPAN value (or WHEN LEANING value, when leaning), a span alarm is
triggered. When this occurs, those two EGT values will alternate between their actual value and
a SPN alert. If you have configured the ALARM setting to either SELF-CLEAR or LATCHING,
the SPN alarm will be red and will be accompanied by an alarm bar. If you have configured
ALARM to be OFF, the SPN alarm will be yellow.
5-10 EMS-D10 Installation Guide