Edm 900 - Advanced Twin Piston Engine -monitoring Instrument

By Author: Joseph Polizzotto
Total Articles: 18
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This is no ideal claim and there’s a TSO certificate to prove the claims. With the advanced EDM 900 on board, you can remove many of your old analog gauges and reduce clutter on your instrument panel.

Depending on space or user choice, the EDM 900 can be installed vertical or horizontally. Additionally, the owner has almost unlimited installation choices, and the device itself has a long list of user options to provide more control and information to the pilot.

Advanced data display:

To begin with, the display screen is divided into three parts – the top left is reserved for the Engine Rotation Speed (RPM) section and the Engine Manifold Pressure (MAP) data. To the right of the pilot, is information for primary strip gauges. The bottom left is reserved for messages i.e. the Scanner® alerts.

The EDM 960 Twin displays information in digitally in large very readable characters. The device comes equipped with range limits and pre-set alarms that are factory-configured to match the aircraft it is being fitted into. This does away with the need for any pre-configuration at the user end.

A new ...
... addition is the Remote Annunciator Light ‘RAL’ that provides notification that an alarm is triggered. On powerup, the RAL will first glow red and then yellow indicating that it is functional.

The EDM 900 alarm:

The EDM 900 alarm consists of three parts; the digital readout changes colour to yellow or red (depending upon intensity of the problem), secondly, the message area will display the error code and finally, just so the pilot does not miss it, RAL light will blink to gain pilot attention.

Features included:

The EDM 900 has a long list of function - only a handful are covered here.

The EDM monitors voltages, engine pressures and temperatures; it assists in diagnosing engine malfunctions and fine-tuning the air/fuel mixture. The programming is achieved via 4 buttons located on the panel buttons located below the display area.

The Scanner analog display including index square and cylinder numbers are displayed in the lower left corner. The bottom left is reserved for numeric readouts and messages. The Bar graphs will be displayed on the right half of the display screen. The height of each column (bar graph), digitally represents the temperature of the CHT or EGT Probe or TIT (if installed).

Numbers are displayed below each bar graph column. These identify the cylinder for which the data is being displayed. Data for TIT (if installed), is identified by the letter ‘T’ displayed below.

The right side displays the linear bar graphs. These display oil pressure, temperature, compressor discharge temperature, Fuel Flow, tank fuel quantity (for both tanks). Alternatively, the same area also displays non-primary data including voltage, fuel pressure, fuel used, remaining and TOE (estimated), as well as OAT.
Although the EDM 900 display screen will automatically self-adjust to the brightness, the pilot can also manually adjust the brightness by taping on the ‘Dim’ button.

The Engine Data Management 900 for aircraft has four operating modes; manual, automatic, Program and LeanFind.

Called flight engineer because it provides the same data that earlier required a human flight engineer, the EDM 900 is truly a versatile instrument.

For more information, please visit: https://www.jpinstruments.com/shop/edm-900-2/