Avionics Report

May 1998 Issue

Engine Monitors

In overall features, JPI edges out the GEM but the Allegro is the unsung leader of the low-price set.

Do you absolutely, positively need an electronic engine monitor? Or are they really just cleverly packaged microprocessors competing for the bucks you’d otherwise spend on a new navcomm?

Consider the science and physics of airplane engines. They’re nothing but heat engines, converting thermal energy to useful power. The temperature of various parts of the engine, therefore, is a useful indicator of the engine’s health, power output and efficiency. In short, engine monitors offer an inside look at engine operation that the standard cockpit instruments can’t touch.

The market is flush with choices. Besides price, a key differentiation between the various models of monitors is the num...

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