STRATOMASTER E2 EMS: FEATURES AND FUNCTIONS:

(May require additional senders)

• Exhaust Gas Temperature (EGT)
• Cylinder Head Temperature (CHT)
• Water Temperature
• Oil Temperature
• Oil Pressure
• Engine RPM
• Engine Hours
• Trip Timer
• Maintenance Countdown
• Fuel Flow
• Fuel Level
• Ambient Temperature
• Voltmeter
• Flight Data Recorder
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STRATOMASTER E2 EMS: An in-depth rundown of features

• EGT readings of up to four thermocouple probes (both J and K-type thermocouples are supported) continuously displayed. Differences between any two EGT readings are automatically monitored and an alarm can be triggered if the difference becomes concerning.
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• CHT readings (typically two) can be made via thermocouple or NTC probes and are continuously displayed with major differences between any two readings being flagged as alarm conditions.
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• Water (coolant) temperature either in the block head or radiator.
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• Oil temperature and pressure continuously displayed with the pressure sender type configurable for a wide range of senders.
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• RPM (engine revs) is prominently displayed both numerically and graphically.
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• Hour meter. A pre-settable hour meter automatically counts engine running time up to 9999 hours, 59 minutes.
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• Trip Timer. A Run-Time display shows the time the engine has been running for the current flight.
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• Maintenance countdown. A pre-settable Maintenance count-down timer can be used to indicate when the next maintenance task is due (such as spark plug replacement).
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• Fuel Level can be read directly from a standard, low-cost, automotive float level sender with a readout of fuel remaining in units of your choice (Liters, US/Imperial Gallons, Kg, Pounds or % tank capacity). The E2 has a special calibration procedure to allow it to "recognise" the shape of your tank and adjust the sender reading accordingly to always give an accurate readout of remaining fuel. Alternatively, if you have a fuel-flow sender installed, the E2 can continuously subtract the fuel actually used from the initial amount (manually set or automatically read from a fuel level sender at switch-on).
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• Fuel Flow. With an optional fuel-flow sender installed, fuel burn rate can be shown in fuel units of choice per hour. This provides a good indication as to the state of the engine once typical burn rates for various conditions are known. In addition, knowing the remaining fuel capacity allows the E2 to instantaneously calculate and display your estimated endurance at current fuel burn rate. Now you can make realistic contingency plans long before a low-fuel condition becomes a problem.
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• Ambient temperature is available using an accurate semiconductor temperature probe (included).
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• Voltmeter displays current system voltage. This is useful to check charging /over-charging of batteries.
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• Flight Data Recorder automatically records all engine parameters allowing typically the last 10-15 minutes of engine running time to be retrieved and analyzed in the event of an engine failure. This helps greatly in the diagnosis of engine problems should they occur.

ADDITIONAL FEATURES of the E-2 EMS:

• Simple three-wire connection to remote RDAC IV computer to provide measurements of up to four thermocouple inputs (for EGT and/or CHT readings), three NTC inputs (for CHT, coolant or oil temperatures), as well as oil pressure fuel flow, fuel level and engine revs inputs. Inputs may be used in any configuration with a simple Device Setup Menu allowing you to decide what and how parameters should be measured.
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• Alarms can be user-configured to trigger on any over/under limit readings. The display flashes the offending parameter and displays a message indicating the problem (Eg: FUEL LEVEL LOW). In addition, an audible alarm is sounded (with outputs available for connection to a 4 or 8 ohm panel speaker, or directly into your intercom system) and an alarm relay is closed/opened once per second to activate an external alarm indicator (Eg: a lamp). Pressing any key will acknowledge and silence the audio alarm but the display remains flashing the offending out of range temp or pressure reading until such time that they are brought back into normal parameters.
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• Display Backlight can be operated in one of three modes (software selectable): Always on, Always off and Automatic. In the later case, the backlight will turn off if no engine revs or other activity has been noted for about 10 minutes.
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• Power supply protection is standard with a fast Tranzorb to prevent destruction by spikes caused by inductive loads. Further to this two independent watchdogs are used to detect software malfunction (crashes) to facilitate automatic recovery.
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• The unit can operate for about 12 hours on a 9V PP3 battery (alkaline) if the display back light is off (Software selectable) and even with voltages as low as 7V. Normally, the unit should be connected to either 12V or 24/28V aircraft supplies. Should the aircraft suffer a power failure to the instruments it is possible to use a 9V battery as emergency backup power supply for the instrument. This requires the installation of a simple two-diode de-coupling bridge. Details on the required wiring are included in the manual.
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• The unit has been designed to be immune to strong RF interference from a VHF radio. In addition, great care has been taken to make sure the unit produce as little RF interference of its own as is possible using a Copper clad ABS housing for maximum EMI performance and light weight.

RDAC IV FEATURES:

• Self contained unit with own processor supplied as standard with every Stratomaster E2 unit.
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• No aditional power supply wiring required. RDAC IV simply plugs into RDAC socket of Stratomaster E2. The RDAC is supplied standard with 10 ft of cable and connector.
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• Four channel precision thermocouple amplifier for EGT and CHT probes. Can use K type and J type senders, grounded or isolated configurations. Fully cold junction compensated and includes bow voltage correction.
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• Two channel NTC input for MGL or Rotax 912/914 CHT senders.
• Water temperature sender input (Sender is an optional extra at low cost)
• Oil pressure sender input is configurable from 50 to 1000 ohm senders (Rotax uses a 200 ohm sender)
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• Fuel level sender input - accepts standard fuel level senders. Comprehensive calibration features allow direct readout of fuel level in selected units, compensating for odd tank shapes.
• Fuel flow sender input. Pulse counter input configurable to allow calibration to various fuel-flow senders.
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• Rev counter input - high impedance, can be setup for a wide variety of engines

 
Typical Display showing 4xEGT, 2xCHT, Oil temperature, Oil pressure, Fuel Flow, Fuel Level and Engine Revs. This is a typical layout for a Rotax 912/914 engine.

SYSTEM REQUIREMENTS

OVERALL SIZE

Face: 202mm x 92mm
Panel cut out: 196mm x 75mm
Mounting depth: 95mm (incl. wiring)

WEIGHT

Display: 575g (20.8 ounces)
Engine Capture Module: 275g (9.7 ounces)

STRATOMASTER E2 EMS: WARRANTY

The Stratomaster E2's electronic components are guaranteed for 12 months from date of purchase against faulty workmanship/defects. Defective parts will be replaced/repaired at manufacturers discretion.

PRICE: $675 (plus shipping)