Dynon Avionics EMS-D10 Installation Guide - Manual (Page 53)

EMS Configuration
Cylinder Head Temperature (CHT)
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 CHT sensors have been installed,
set the DISPLAY parameter to ON; if no CHT sensors are
installed, set it to OFF. If you are using J-type
thermocouples, you are finished with the CHT
configuration; there is no need to configure a sensor type. If
you have a Rotax and are using resistive CHT sensors, refer
to the General Purpose Inputs section on page 5-16 to
configure the instrument to recognize your sensors.
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’ CHTs. 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’ CHTs is
greater than the MAX SPAN value (or WHEN LEANING value, when leaning), a span alarm is
triggered. When this occurs, those two CHT 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.
EMS-D10 Installation Guide 5-11