Package Includes: EIS 2004 instrument with Qty 2 AeroConversions CHT Senders, Qty 2 EGT senders, and all required wiring and harnesses. Includes Airspeed, Altimeter/VSI, Sonex Fuel Level Probe, and Outside Air Temperature.

Available Options*:
Fuel Flow Option: $375
Manifold Pressure: $60

*Options are best added to your EIS at the time of order. These options may be added to your EIS at a later date, however, the instrument unit may need to be returned to Grand Rapids for a firmware upgrate to accomodate these options.

EIS unit and Sonex Fuel Level Probe is drop-shipping directly from Grand Rapids Technology. Purchasing this unit from Sonex includes installation and tech support from Sonex along with tech support from Grand Rapids Technology

Package Includes: EIS 4000 instrument with Qty 4 AeroConversions CHT Senders, Qty 4 EGT senders, and all required wiring and harnesses. Includes Airspeed, Altimeter/VSI, Sonex Fuel Level Probe, and Outside Air Temperature and 22 functions!

Available Options*:
Fuel Flow Option: $375
Manifold Pressure: $60

*Options are best added to your EIS at the time of order. These options may be added to your EIS at a later date, however, the instrument unit may need to be returned to Grand Rapids for a firmware upgrate to accomodate these options.

EIS unit and Sonex Fuel Level Probe is drop-shipping directly from Grand Rapids Technology. Purchasing this unit from Sonex includes installation and tech support from Sonex along with tech support from Grand Rapids Technology

Package Includes: EIS 6000 instrument with Qty 6 AeroConversions CHT Senders, Qty 6 EGT senders, and all required wiring and harnesses. Includes Airspeed, Altimeter/VSI, Sonex Fuel Level Probe, and Outside Air Temperature and 22 functions!

Available Options*:
Fuel Flow Option: $375
Manifold Pressure: $60

*Options are best added to your EIS at the time of order. These options may be added to your EIS at a later date, however, the instrument unit may need to be returned to Grand Rapids for a firmware upgrate to accomodate these options.

EIS unit and Sonex Fuel Level Probe is drop-shipping directly from Grand Rapids Technology. Purchasing this unit from Sonex includes installation and tech support from Sonex along with tech support from Grand Rapids Technology

The fuel flow option includes a FloScan fuel flow sensor to provide  fuel flow rate, total fuel remaining, and the endurance (time until empty at the current flow rate). The endurance display is especially useful, as it eliminates the mental calculations required to convert a fuel level indication into gallons, and gallons into time remaining. The Fuel Flow function also includes a user programmable calibration factor that allows you to achieve an accuracy of 0.5% or better for all of these functions. This accuracy is unattainable with traditional fuel level sensing techniques.

The flow sensor mounts in the fuel line. The signal it generates is used by the EIS to calculate the flow rate, fuel remaining (the totalizer), and time until empty. The user must update the totalizer whenever fuel is added to the airplane. A simple shortcut allows for easily resetting the totalizer to a user-defined full tank reading, or the totalizer may be adjusted to any value in the case where the airplane is not filled.

Grand Rapids chose the FloScan brand fuel flow sensor because of its safety, accuracy, and overall quality. The sensor is designed such that the fuel will pass through the sensor even if its internal rotor becomes blocked. Repeatability of the sensor is excellent, better than 0.5 percent, and features such as jeweled bearings account for its 10,000 hour design lifetime.

The fuel flow option is ideally suited for:

• Those who often fly cross-country flights, especially those who fly to the limits of their airplane's range, where the precision of the fuel remaining and endurance calculation become very useful.
• For airplanes with fuel tanks which are difficult to instrument accurately. The shape of the fuel tank does not affect the accuracy of the fuel flow's totalizer, overcoming the accuracy problems of fuel level probes in such tanks.
• For fuel injected engines. The higher fuel pressure of fuel injected engines increases the possibility that a fuel leak could go undetected. The max flow rate alarm provides additional safety in detecting these leaks.

Fuel Flow Features

• Fuel Flow Rate (0.6-60 gallons/hour)
• Total Fuel Remaining
• Time Until Empty
• Low Fuel Warning
• Max Flow Limit
• Better than 0.5% Accuracy
• User-selectable units of Gallons or Liters
• Adjustable Scale Factor
• Includes FloScan Brand Fuel Flow Sensor
• A dual flow sensor version is available for fuel systems which return fuel back to the tank.