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EM3 Engine Monitor

Next Estimated Production Slot: December, 2009

$459 + $26 shipping and handling - Introductory BASE price. Includes OAT sensor Price higher with options

Option	Price
Base Unit with OAT sensor (Customer supplies CHT and EGT sensors. Same features as EM2 but with 8 CHT or general purpose temp inputs PLUS 8 EGT or General Purpose temp inputs. Data logger compatible)	$459.00 Introductory Pricing
Basic Sensor Kit (Oil temp, oil pressure, coolant temp)	$55.00 additional
Air Data (True air speed, Altitude, VSI)	$165.00 additional
Data Logging (Parameters logged at 1 second intervals. Includes software to display data on PC)	$259.00 additional
Price including ALL ABOVE OPTIONS	$938.00
MAP Sensor (NOT required with EC2 or EC3 engine controller)	$45.00
Future Option: Altitude Encoder (for Mode C transponder. Also REQUIRES air data option)	$135.00

A $25 deposit will hold a production slot for you. Upon receiving a deposit, you will receive email with a TARGET delivery date. Due to the customized nature of our products, this is a TARGET and not a GUARANTEED date. We will invoice you when the unit is ready to ship, and keep you posted by email with any schedule changes. If you need to cancel your order as a result of a schedule change on our part, your deposit will be REFUNDED in full and the order cancelled.

Deposits are refundable if order is cancelled with 90 days OR at any time if the cancellation is due to a change in our production schedule. Deposits after 90 days are considered on a case by case basis. See details under LEGAL STUFF

Custom EM2 Wiring Harnesses available from Bob White www.rotarycables.com

Rotary and other water cooled engines available now

Lycoming version coming soon

Click HERE to DOWNLOAD the .pdf version of the EM2 Installation and User Manual. Note that the .pdf version MAY NOT CONTAIN ALL DOC UPDATES and is for introductory use ONLY. Please use the installation guide that comes with your unit when doing a live install.

We've been flying the EM2 for over 4 years. CLICK HERE for details

Standard Panel/LCD

Base Price: $459 + $26 shipping/handling (price will be higher with options)

Click for RWS RETURN POLICY


This is the standard size LCD display. Brightness level is adjustable for night flying. This display works well in all aircraft, including full sun bubble canopies.


This is the BACK of the STANDARD EM2 LCD unit. Photos not yet available for EM3.

Most of the engine data on the display is obvious but some may require explanation. Starting at the upper left is engine RPM, Manifold Pressure in inches of mercury, True Air Speed (corrected for temperature & altitude), and Exhaust Gas Temperature. The digital EGT reading is the highest of the group. The single digit below that shows which of the EGT probes is currently the highest.

The two bar graphs on the right under the EGT are a graphic representation of the two (or four depending on engine) EGTs being measured. The bars start at 1200 degrees and top out at 1800. The reason for repeating the EGT information in graphic form is for seeing balance, watching trends and rapidly determining which rotor or cylinder is involved in the event of a failure of either fuel delivery or ignition.

Starting at the lower left is Water temperature, Oil Temperature, Oil Pressure, and electrical system voltage. The vertical bar graph to the right of Water Temperature represents the current cooling system pressure. It has been our experience that cooling system problems will show up as a pressure change long before they cause a rise in temperature, so we felt it deserved a spot on the top & bottom priority engine data lines. These lines always remain displayed regardless of which alternate screen you call up for the center two lines.

The center two lines are the variable fields which display the 8 other pages of other functions. Shown in these pictures is the default page. On the left is fuel flow in gallons per hour followed by total fuel burned since reset (or fuel remaining) then Miles Per Gallon. Being an efficiency freak, I like seeing MPG on my default screen so that I can pass the time tweaking the engine for best economy on those long cross country flights. Not seen in this photo is the bar graph to the right of total fuel burned which shows fuel pressure. The fuel and coolant pressure bar graphs on the display are to alert you to abnormal fluctuations. If you want to see the absolute digital value of these parameters, pressing one of the display control buttons (not shown here) will bring up what we call the 'Quick Check screen' which shows fuel & coolant pressure (and some other info as well) in digital form.

The EM3 is designed with a separate data acquisition module (as opposed to the integrated, one piece design of the prior EM2 unit). This allows the data acquisition module (DAqM) to be placed closer to the engine sensors, which can simplify the number of wires running between the engine compartment and the instrument panel.

The DAqM utilizes screw terminal blocks (instead of the connectors used on the EM2), simplifying wiring and eliminating the troublesome soldering of thermal couple sensors to connector pins. The DAqM is connected to the display by a simple 3 wire connection.

The EM3 allows for modularized features so you can avoid paying for features you do not need. (See "Optional Features" section below.)

Panel cutout size/STANDARD: W 4 1/8 X H 2 11/16ths inches Mounting Depth: 2 inches

Total space required on panel for surface mount/SMALL: W 4 3/4 X H 2 7/8ths inches

Space Behind Panel (depth): Approximately 1.25 inches plus room for connectors and cable

Sensors

Price includes: Manifold pressure, altitude, airspeed, oil temp, oil pressure, water temp and OAT sensors. No additional sensor is needed for fuel flow on EFI engines as this information is read from the EC2 engine controller.

Customer needs to supply other sensors. Standard VDO sensors recommended for liquid temperature and pressure inputs. Standard thermocouple probes used for CHT and EGT functions. If you have questions about the compatibility of your current sensors, please email us with your questions. The EM3 can be calibrated to work with a wide range of sensors.

Engine Parameters

All engine parameters have adjustable high and low alarm limits. Exceeding limits will cause out of limit parameter to blink. Also flashes alarm light on panel (included) OR audible alarm via aircraft audio panel connection.

Adjustable upper and lower alarm limits on all critical engine parameters

RPM	Coolant pressure
Oil pressure	Air/Fuel Mixture
Oil Temp	% of power
Coolant Temp	Inlet Air Temp
System Voltage	Horsepower based on fuel flow and BSFC
Bar graph display (in addition to digital readout) on select functions
EGTs (up to 8) auto display highest or all	CHTs (up to 8) auto display highest or all
Unused CHT or EGT channels can be used for general purpose temperature measurement

Performance - Air - General Data

Outside Air Temperature (OAT)	Flight Timer
Oil Hours Timer	Hobbs Meter
General Purpose Timer (standard)

Fuel Management

Fuel Flow in GPH (standard on efi engines. Flowscan sensor fuel flow is optional)	Fuel Pressure (standard)
Total Fuel Used (or remaining) (standard)	Fuel Level - right and left (standard)

Optional (Additional Cost) Features (please contact us for pricing)

Flowscan sensor fuel flow	Pressure Altitude (up to 32,000)
Airspeed (TAS)	Vertical Speed (VSI)
Manifold Pressure	Data Logging

The data logging option allows recording of all monitored engine functions at one second intervals. Data is logged on a common, inexpensive USB thumb drive. Even a small thumb drive will hold hundreds of hours of data.

The data logging option includes software to display engine parameters on your laptop or PC. This can be invaluable for analyzing engine, cooling and other system performance problems.

Graphical User Interface to EC3 EFI System

	Makes it easier to spot gaps in mixture map programming (can you find the gap in the photo above?)
	Enables off line programming of all EC2 parameters
	Provides both graphic and digital display of mixture map parameters

Display Questions

Q. Do you offer a choice of displays/sizes?

No. We only offer the Standard LCD unit.

An LCD display is visible even in bubble canopy airplanes. Full sun on these displays only improves the readability. It has a variable intensity backlight for night flying and low light conditions.

The standard size is large enough to be easily readable by anyone able to pass their 3rd class medical. Character height is about the same as on most aircraft instruments.

Q. I don't see all the functions listed for the EM3 on the display. Where are they?

There are eight pages of engine instruments that can be displayed on the EM3. The top and bottom lines are the main engine instruments and are labeled by engraved lettering on the panel. These readout are always visible. The variable data fields are the center two lines and it is here that the other pages are displayed. Shown in the pictures is the default page.

Q. I don't see any controls for the EM3. How do I control the monitor and select the other pages?

Not shown in the pictures are the 4 small push-button switches used to control the instrument. These may be mounted near the display or anywhere in the cockpit that is convenient. In normal use, only the "Page Up" & "Page Down" buttons are used. The other two are used mainly for setting limits, calibration, and timer control.

Q. Can I have more than two fuel tank levels displayed?

Yes, but you will have to give up some of the auxiliary functions. The supported fuel senders are Stewart Warner 385x-F (standard for Vans Aircraft). You can also use capacitive fuel level senders if you use the adapters that convert the output to 0 - 5 volts. You must specify this when ordering.

Have other questions? Email us at laura@rotaryaviation.com .