A significant advantage of these systems over the standard analog gauges is its ability to continuously monitor each parameter for the pilot and post an alarm anytime an abnormality arises.
To facilitate a wide variety of engines and pilot preferences, each engine measurement is individually setup during the installation process. Pilots can define the color coded operating ranges, whether or not an alarm is generated, and how the alarm behaves once active. Alarm behavior can be set to either be latching, which requires operator acknowledgement, or self-clearing, which lets the alarm remove itself once the offending parameter returns to its normal operating range.
Whenever an alarm condition occurs it is annunciated in a variety of ways:
- A red bar is posted across the bottom of the screen
- The alarm menu is posted across the bottom of the screen
- The measurement value(s) in the alarm state blinks red
- An alarm contact output is closed, which turns on a user-supplied alarm light
- An audible tone is annunciated through the audio panel or intercom when connected
Pilots can deal with alarms in multiple ways. Pressing silence allows all visual annunciations to remain, but the audio tone is muted. Alternatively, the alarm can be fully acknowledged, in which case the audible signal, red alarm bar and external alarm light are all dismissed. Regardless of any action, the alarming measurement value will remain in the blinking red alarm state until the alarm condition is no longer present.
New Programmable Alarms - CHT Shock Cooling & Span Alarms
Current EMS models are now equipped with CHT shock-cooling alarm capability to alert pilots whenever cylinders drop their temperature too suddenly. Separate temperature span alarms are also included that actively monitor across all EGTs & CHTs. Unique temperature span set points can be programmed for lean and normal operating modes.