JP Instrumens EDM 900 Primary

The EDM900 Primary system allows you to remove your old steam gauge instruments and move up to the most advanced and accurate piston engine-monitoring instrument on the market.


Designed to be used both vertical or horizontally, the rear processor is offset to give almost unlimited install choices, and features a long list of user options. TSO’d as a PRIMARY instrument and for quality, the EDM 900 is not just another black box along for the ride. It is a Flight Engineer … a Maintenance Manager … a Backup Instrument. For the price there is nothing that gets close to it. You can almost think of the EDM 900 as your personal flight engineer. It’s always there, working in the background, constantly watching over your engine while you concentrate on flying the aircraft. You can make an entire flight without ever pushing a button, if you so choose. Yet your EDM will be monitoring your engine parameters three times a second and will warn you instantly if any parameter exceeds the programmed limit.


Accuracy and Resolution, are two of the most misunderstood terms in instrumentation. Because an instrument displays 1 degree increments (resolution) does not mean it is accurate to 1 degree. JPI’s accuracy comes from its linearized thermocouples. Other’ put and estimating straight line through the center of the thermocouple calibration “S” curve. With this method the instrument is accurate at only three points along as the the straight line crosses the “S” curve. Therefore errors of +/- 10′ are quite possible while still displaying in 1degree resolution. Our competition is advertising +/- 1/2′ accuracy at full scale. This would mean that =/-1/2′ of 2000′ (full scale) is +/- 10′; there is a big difference. JPI has found nothing in the Aviation market that compares to our linearized accuracy.


Pre-Wired Harness for all functions
• New Display SVGA & view angle 85 degrees all around
• Back lit buttons
• RPM Prop
• MAP Manifold Pressure
• % HP Percent of Horse Power
• EGT Exhaust Gas Temp.
• CHT Cylinder Head Temp.
• EGT Normalize mode
• LOP/ROP JPI Exclusive Leaning Mode
• O-T Oil Temperature
• O-P Oil Pressure
• F-P Fuel Pressure (when in POH)
• OAT Outside Air Temp.
• VDC Voltage (1)
• AMP Current amps (2 twins)
• Fuel Flow Transducer FlowScan
• GPH Gallons per Hour GPH
• REQ Required to wp or destination
• USD Fuel used
• H:M Endurance Hours and Minutes
• MPG Miles per Gal
• CLD Shock Cooling on ALL cylinders
• DIFF Difference between EGT’s
• USB Memory stick 1 GB
• Data Recording 800 Hrs every 6 sec.
• EZTrends Graphing Software free
• 3 year Warranty

Dimensions: EDM-900   – 3.56″ deep (connectors recessed)- 4.81″ wide – 3.47″ high

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