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Instruction Manual for the Airspeed MicroSensor V3

Document Version 1.5

Thank you for your purchase! This instruction manual will guide you through the installation and operation of your Airspeed MicroSensor

V3 (the MicroSensor). Please read the entire manual carefully before proceeding. If, after you read the manual, you have further

questions or problems, see the Support page on http://www.eagletreesystems.com for additional information, or email us at

support@eagletreesystems.com. Please visit our support web page for the full color, electronic version of this manual which may be

updated if changes were made after printing, or if you want to view the manual on your computer.

What the MicroSensor Does

The MicroSensor is a precision instrument that uses a Prandtl style pitot-static tube to measure airspeed, just as full sized planes do.

Advanced temperature compensation and calibration ensure the best possible accuracy. When used standalone, the MicroSensor displays

your maximum speed on the built-in 7 segment LED display. The maximum speed continues to be updated and displayed on the LED, until

you turn power off and on the MicroSensor. When power is turned off and on, the maximum speed from the last flight is displayed, and now

the MicroSensor is ready to record your next maximum speed (even if it is lower than the previous maximum speed).

Additionally, the MicroSensor can be connected to your eLogger (any version) to provide airspeed data for your entire flight. When

connected to the eLogger, airspeed can be displayed and graphed using the eLogger’s Windows software.

IMPORTANT: It is extremely unlikely that the installation of the MicroSensor will affect your model’s radio range or control. But, as

always after making an electronics change to your model, it is very important that you range and function test your model once the

MicroSensor is installed to ensure that there is no impact on your system.

Packing List

Your package should include the following: The MicroSensor, a machined brass and aluminum Prandtl style pitot-static tube, the Standalone

Cable, approximately 3 feet (1 meter) of small diameter silicon hose, and a printed version of this manual. NOTE: Additional Pitot Tube

kits are available for purchase on our website, for use with multiple models.

Installing the Pitot Tube and MicroSensor in your Model

Using two lengths of the included small diameter silicon tube, the pressure and static connections of the pitot tube connect to the “+” and “-”

ports of the MicroSensor, respectively, as shown in Figure 1. It is best to mount the pitot tube in your model first, then determine where

you will mount the MicroSensor, and then cut the two lengths of silicon tube so they reach between the two.

Follow these guidelines when mounting the pitot tube:

1. The pickup end of the pitot tube (the silver colored tip) should be pointing toward the direction of the model’s travel. While best results

will be obtained if the pitot tube is perfectly aligned with the direction of travel in both axes, the “Prandtl” design of the tube will

compensate somewhat for higher angles of attack.

2. The static holes on the pitot

tube (shown on Figure 1)

should extend at least 1/2”

(13mm) past the wing’s

leading edge, or past any other

obstructions - the farther out,

the better. This is to ensure

that the static holes and pitot

pickup are in undisturbed air.

3. For prop planes, it’s important

that the tube be placed so that

it is not directly in the plane’s

prop-wash, which will result in

Summary of content (4 pages)

PAGE 1
Instruction Manual for the Airspeed MicroSensor V3 Document Version 1.5 Thank you for your purchase! This instruction manual will guide you through the installation and operation of your Airspeed MicroSensor V3 (the MicroSensor). Please read the entire manual carefully before proceeding. If, after you read the manual, you have further questions or problems, see the Support page on http://www.eagletreesystems.com for additional information, or email us at support@eagletreesystems.com.
PAGE 2
Page 2 erroneous readings. The best place to install the tube is on the leading edge of the wing several inches out from the fuselage, as shown in Figure 1. 4. For jets, gliders, or “pusher” prop planes, the nose cone often provides a perfect mounting location. After Pitot Tube installation, it is recommended that you glue or otherwise attach the silicon hose to the airframe, to reduce the chance that hose vibration or movement could cause erroneous readings.
PAGE 3
Page 3 To reset the max trigger, just turn power off and on to the MicroSensor. Then, after landing from your next flight, the highest speed attained during that flight is displayed automatically, overwriting the highest speed from your prior flight. Note that a speed of at least 9 MPH (15 KPH) must be attained before a new highest speed is displayed. The highest speed of your last flight is automatically saved, so that when you turn the unit back on, that speed is displayed.
PAGE 4
Page 4 Troubleshooting Below is a list of problems that may be encountered, and steps to remedy them. If your particular issue is not addressed by the below, see the Support page on http://eagletreesystems.com or email support@eagletreesystems.com. Include a full description of your problem, your PC configuration, your Eagle Tree hardware and software versions, and any other relevant information.