G2 Engine Monitor
Save fuel, save your engine!
Superior Patented Leaning Process:
- G2/3/4 makes the lean process easy
- No one else has this unique leaning process
- G2/3/4 leaning is so easy and complete we patented the process - Read Patent
With patented features like:
- Pilot settable lean threshold target
- Colored box appears at peak
- Lean boxes show temperature of how much lean or rich
- Colored boxes show lean or rich
- Lean boxes change at lean threshold
- Fuel flow guidance for leaning
- Fuel flow at each cylinder peak (GAMI SPREAD)
- In-flight exhaust valve analysis
- EGT temperature bars with numbers
- CHT temperature bars with number, yellow warning and redline
- TIT temperature bar with number, yellow warning and redline
Controlling the G2 instrument
The instrument has two
control knobs that operate combination rotary and push button
switches. The top knob in general controls screen selection
while the bottom knob controls items within the given screen.
Each screen assigns its own functional needs to the controls
that may change depending on context. A screen may also label
the controls with guidance information like “Push to exit”.
The Bar-Graph Display Screen
The Exhaust Gas Temperature
is displayed in white bar graph form and is interpreted much
like a conventional mercury thermometer. The higher the bar, the
higher the temperature.
The cylinder head temperature is displayed in green single bar
format. During normal operation it shows as a green illuminated
bar in the lower half of the bar column. Since EGT is normally
higher than CHT, the green bar which represents CHT is on top of
the white illuminated EGT bar and stands out clearly. However,
when the engine is shutdown, the EGT quickly drops to zero and
the cylinders remain warm for sometime.
The G2 provides a reliable indication of cylinder head
temperature even with the engine shut down. Should an EGT probe
fail, the entire EGT column for that cylinder will go blank, and
the numeric indication will show --- that is dashes, but the CHT
bar will still remain green. The failure of one probe will not
affect the display of any other probe.
An Easy Upgrade
A key requirement of the G2 design was compatibility with previous GEM’s. We strive to never leave our loyal customers behind. Packing all the functionality of the G2 in package half the size of the original GEM took us to the limit of our patience many times but it was worth it. Fortunately its amazingly compact circuits will be built by robotic machines because most of the parts are too small to handle and too difficult to be seen by eye. Products like the modern cell phone have driven the electronic assembly technology we use a long way.
AVWeb Insider - New Insight Engine Monitor and So Much More
By Rick Lindstrom
Insight the originator of the Graphic Engine Monitor surprised everyone by unveiling a new third generation GEM called G2 at Sun n Fun. By no means a luke warm sequel the G2 is a breakthrough product.
Featuring a bright full color display it offers numerous screens of new functionality previously unavailable anywhere.
While the original lean screen is gone a vastly improved screen replaces it with special functionality for lean of peak operation.
G2 logs data to readily available SD digital camera cards. A low cost card will store decades of flight data.
The new G2 writes PC compatible files and directories so no special software is required to process or transfer data.
Despite its enormous capabilities the new G2 is a compact size and plug-compatible replacement for all 610 GEMs.
Insight offers a generous GEM trade-in to make upgrades easy.
Aircraft install weight - A G3 for 6 cylinder with 8 foot harness, all sensors, wiring, connectors and probes is 4.2 Lbs.
TOP REASONS TO INSTALL A G2
2 - The only nozzle balance analysis, the key to lean of peak
3 - The only probe diagnostic screen
4 - Comprehensive data log - windows files SD card
5 - Over the web software updates - constant improvement
6 - GEM plug compatible - easy install
7 - Best technical support
G2 Buss Voltage
The G2 Buss Voltage attempts to display the buss voltage in green when it’s normal and red when it’s outside of normal. In an aircraft with a 12V electrical system the Buss Voltage will be annunciated in green so long as the voltage is 12.0V to 14.9V (inclusive).
In an aircraft with a 24V electrical system the Buss Voltage will be annunciated in green so long as the voltage is 24.2V to 28.7V (inclusive). Below this range the alternator isn’t charging the battery and above that it’s overcharging, and the Buss Voltage will be annunciated in red.
The instrument must be connected to the main voltage buss (not
in series with something else, on a lighting buss, etc.) and must
have a good low-resistance ground connection, otherwise the
voltage measurement itself will be in error causing the Buss
Voltage to indicate in red erroneously.
Pages you will see on your new G2
Monitor Page
Probe Analysis Page
Fuel Page
Lean of peakRich of peak
Restarting
The Leaning Process
Restart the leaning process and resetting
the peak indications on G2/3/4 single by a short push of the SEL
button.
Fuel Screen
The Fuel Remaining display on the G2-3-4 is very useful but is not without limitations. Understand first that the factory fuel quantity gauges are the only instruments in the panel that physically measure fuel level. They are still the primary indication of fuel level in the airplane.
Your G2-3-4 was preset at factory with your usable total fuel
To reach TOTAL TOTALIZATION page
Set total fuel onboard before take-off
1- Push SEL button to highlight INITIIAL FUEL to yellow
2- Turn SEL knob to set gallons
3- Push SEL knob again to highlight SAVE & EXIT to yellow
4- Turn SEL knob to highlight YES from yellow to red
5- Push SEL button to save and FUEL TOTALIZATION page will
appear
On next take-off if no fuel was added
1- Push SEL button to highlight INITIIAL FUEL to yellow
2- Push SEL knob again to highlight SAVE & EXIT to yellow
3- Turn SEL knob to highlight YES from yellow to red
4-
Push SEL button to save and FUEL TOTALIZATION page will appear
If fuel was added set new total fuel
1- Push SEL button to highlight INITIIAL FUEL to yellow
2- Turn SEL knob to set total gallons
3- Push SEL knob again to highlight SAVE & EXIT to yellow
4- Turn SEL knob to highlight YES from yellow to red
5- Push SEL button to save and FUEL TOTALIZATION page will
appear
FF Stability
Displays, literally, the stability of your fuel flow over the last few seconds. The smaller the number, the less the fuel flow has varied in the past few seconds. A well-regulated fuel system will have a small number, a carbureted system can expect a larger number. The smaller the number the more likely you are to get an accurate fuel flow reading during the lean-find function. An larger number will make things more difficult.
GEM FUEL TOTALIZER CAUTIONARY NOTICE
The Fuel Remaining display on the GEM is very useful but is not
without limitations. Understand first that the factory fuel
quantity gauges are the only instruments in the panel that
physically measure fuel level. They are still the primary
indication of fuel level in the airplane.
The GEM doesn’t measure level, but instead measures only fuel
flow rate. The GEM totalizes the rate information to account for
fuel used. If you know how much fuel you started with and how
much you have used you can figure fuel remaining by simple
subtraction.
The pilot must supply an accurate starting fuel level for this
subtraction to produce the correct fuel remaining result. Should
the pilot overstate the fuel quantity on board, the GEM will
dangerously overstate the fuel remaining and the endurance time
as well. The pilot must be careful and diligent when setting the
fuel on board.