Aircraft Precision Products

This article helps you compare the two EDM’s and select the one that fits your requirements and your budget. Both these aircraft engine data monitoring systems are manufactured by J.P. Instruments.

EDM 900	EDM 790
(Usually between $3,000 and $5,000)	(From $7,055.00 to $8,255.00)
Features:	Features:
2-4 piston Aircraft Engine Monitoring	EGT & CHT 4 or 6 probes
Includes Pre-wired Harness	Monitor and display of Volts
Includes CHT Probes & EGT Probes and Harness	Monitor Shock cooling
Includes Oil Pressure Transducer and Harness	Span (highest to lowest EGT)
Includes OT Transducer and Harness	EGT Normalize mode
Includes Fuel Flow Transducer and Harness	LOP/ROP function
Includes OAT Probe and Harness	Power connector
Includes RPM Sensor and Harness	All required Harness 20 ft
Includes Manifold Pressure Transducer and Harness	EZTrends Graphing Software free
Includes Shunt 100 amp and Harness	Serial Data recording -25 hours
Includes Volts V1 and Harness	3 year Warranty
Includes Volts V1 and Harness	Full Instrument: Width 4.81 Height: 3.47 Depth: 3.56
Features Remote Access Display 8 Alpha	Insert Size 3-1/8 in panel mount 3.56 deep. Width Above Panel .80 Weight: 1 LB.
Numeric Characters. Backup display.	Optional Functions include: Fuel Flow, Oil Temperature 1 & 2, Turbine Inlet 2 (TIT-2), Outside Air (OAT)
Includes Plotting Software EZTrends ©	Carburettor Temperature (CRB).
Capable of CHT Differential Span Hottest to Coolest	Fuel Efficiency, Fuel Used for the Trip
Shock Cooling on all cylinders	Fuel Used Since Fill up, Time to Empty
Distance to Empty	Distance to Empty
Fuel required to next Way Point or destination	GPS Interface to any GPS even hand-held
Fuel Reserve at way point or destination	Fuel required to next Way Point or destination
Flight Timer	Fuel Reserve at way point or destination
Flight Timer	Data Port for downloading of data.
Tach Timer, Engine Hours	FAA approved graphic engine monitor with a full fuel flow Transducer system.
Date, Zulu Time	Extremely accurate temperature detection; ONE degree (even for EGT).
The Engine Data Management 900 for aircraft has 4 operating modes; automatic, manual, Program and LeanFind.	Paired with JPI's “grounded” fast response probes. Monitors the Twin Engine Aircraft Fuel Flow Indicator every 2 to 255 seconds.
More information here: https://www.jpinstruments.com/shop/edm-900-2/	More information here: https://www.jpinstruments.com/shop/edm-790/