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FC1

User’s manual

FLYBOX

Rev. 3.0

Fuel Computer

FC1

Revision#3.0, 25/11/2014

For firmware version 2.4

Flybox

Summary of Contents for FC1

Page 1: ...FC1 User s manual FLYBOX Rev 3 0 Fuel Computer FC1 Revision 3 0 25 11 2014 For firmware version 2 4 Flybox ...

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Page 3: ...MECHANICAL INSTALLATION SECTIONS ELECTRICAL INSTALLATION OPERATING INSTRUCTIONS INSTRUMENT SETTINGS TECHNICAL SPECIFICATIONS ...

Page 4: ...ent was to create a compact and lightweight fuel computer easy to install and use SYMBOLS USED IN THE MANUAL NOTE Used to highlight important informations CAUTION Used to warn the user and indicate a potentially hazardous situation or improper use of the product WARNING Used to indicate a dangerous situation that can cause personal injury or death if the instruction is disregarded ...

Page 5: ...The pilot must understand the operation of this instrument prior to flight and must not allow anyone to use it without knowing the operation Don t use this instrument in flight until you are sure of the correct operating of the same CAUTION When the installation is finished you must do a test prior to flight switching on all the possible source of electric noise and checking the properly operation...

Page 6: ...he person performing these operations WARNING This instrument should never be used as a primary instrument to determine the fuel tanks level always refer to the original fuel level indicators of your aircraft IMPORTANT If you do not agree with the notices above do not install this instrument in your aircraft but return the product for a refund Microel s r l reserves the right to change or improve ...

Page 7: ...0 SECTION 2 Electrical installation 2 1 Electrical installation 13 SECTION 3 Operating instructions 3 1 Minimum settings before first use 15 3 2 Panel indicators commands 16 3 3 Use of the instrument 17 SECTION 4 Instrument settings 4 1 Functions menu 21 4 2 Setup menu 24 4 3 Fuel flow transducer calibration 27 SECTION 5 Technical specifications 29 Warranty 30 ...

Page 8: ...he FC1 fits in a standard 2 1 4 panel cutout it s recommended to choose a position that permits optimal display visibility It s furnished with four M4 screws to install it to the panel if you use other screws consider that the maximum thread length inside the FC1 panel is 15mm see following picture ...

Page 9: ...FC1 User s manual FLYBOX 9 Rev 3 0 Mechanical installation All dimensions are in millimeters ...

Page 10: ...output It has high chemical resistance to aggressive liquids and hydrocarbons The case can be opened for periodic monitoring and eventual replacement of the tube 1 2 FLYBOX TFTHP FUEL FLOW TRANSDUCER INSTALLATION RECOMMENDATION OF INSTALLATION AND USE Check flow direction arrow on sensor Never clean the sensor with compressed air Install a filter in the fuel line before the sensor To mount the rub...

Page 11: ...lean the sensor open it remove the sensor tube from the fuel system and look inside the two fittings to check for material integrity aging and deformation In case of any anomaly of the sensor tube it must be replaced Verify that the sensor tube is clean and without any obstruction If necessary clean with a flow of fuel in the opposite direction The fuel flow transducer must be installed before the...

Page 12: ...e FC1 connector WHITE WIRE signal connect to pin 10 of the FC1 connector CAUTION After completing the installation verify that the engine is working properly at every RPM speed verify also that at full RPM the fuel pressure after the fuel flow transducer never drop below the minimum pressure indicated in your engine s manual Typical example installation of the fuel flow transducer ...

Page 13: ... installation SECTION 2 2 1 ELECTRICAL INSTALLATION On the back of the FC1 there is a 15 pole male connector it is also furnished with the corresponding 15 pole female connector to be wired as follows 15 pole female connector view from wiring side ...

Page 14: ...te wire of Flybox TFTHP 11 Alarm out 300mA max Connect the load for example a lamp indicator between out and 12V 12 Audio out for intercom it s recommended to use shielded cable 13 reserved 14 Input signal from GPS GPS TX 15 12V for fuel flow transducer red wire of Flybox TFTHP Connector pinout NOTA Insert a 1A circuit breaker or fuse to the power lead 12V CAUTION Voltage peaks that exceeds the op...

Page 15: ...parameters Set the unit of measure kilometers or nautical miles Set the tank s capacity Set the nominal K factor of the fuel flow transducer installed For example if you use the Flybox TFTHP fuel flow transducer the K factor is 416400 in gallons or 110000 in liters if you use other types of transducer set the relative K factor To have reliable indications it s required to perform the fuel flow cal...

Page 16: ...0 Panel indicators commands Alarm LED Knob with pushbutton Reserve LED 3 2 PANEL INDICATORS COMMANDS The knob can be rotated or used as a pushbutton for example it must be rotated to increment or decrement a value and pushed to confirm ...

Page 17: ...e added fuel to the tank s After pressing the knob it appear a screen that permits to insert the exact quantity of fuel rotate the knob to increment decrement the value and press to confirm FILLED Select this option if you have filled the tank s Before using this option you must have set the tank s capacity in the FC1 see chapter 4 2 Setup menu so that the FC1 can automatically set the quantity Th...

Page 18: ... choosing any of the three options you can do this later because the FC1 measure anyways the fuel flow of course only if the FC1 is turned on CAUTION Before begin a flight check that the remaining fuel indicated by the FC1 correspond to the level indicated by the televel Now the FC1 is operative and it shows the first of the six available indicator screens rotate the knob to scroll between the six...

Page 19: ...t or gallons USg CAUTION The fuel remaining displayed here is not a measurement of the fuel in the tank s but it is calculated from the initial quantity and the burned quantity measured from the fuel flow transducer Display the fuel burned from the turn on According to the selected unit of measure the flow is indicated in liters Lt or gallons USg Display the time to empty calculated considering th...

Page 20: ... not possible to calculate the range for example when the engine is turned off the display shows Display the fuel remaining at destination the destination is intended as the approaching GPS waypoint If the number is negative it means that there is not enough fuel to reach the destination NOTE if the display shows NO GPS FIX it can means that the GPS is not connected turned off or don t have the fi...

Page 21: ... see Cicling time and Cicling screens in the Setup menu to set the desired time and screens To stop this function when it is activated simply rotate the knob To enter in the functions menu press the knob for at least one second the menu is divided in two pages Turn the knob to switch from one page to the other Each menu items can be selected by pressing the knob and once selected you can change it...

Page 22: ...when the time to empty reaches this setpoint the FC1 activate an alarm blinking red LED and audio tone in the audio out To deactivate the alarm rotate or press the knob To disable this function set the value to zero Functions menu page 2 Balancing This function is useful to keep balanced two wing tanks switching from one to the other after using a certain quantity of fuel The FC1 will activate an ...

Page 23: ...FC1 User s manual FLYBOX 23 Rev 3 0 Functions menu Light Turns on off the display backlight Setup enter the setup menu see next chapter ...

Page 24: ... 1 to 10 seconds for the Cicling function see previous chap Functions menu Cicling screens Set which screens to show when using the Cicling function see previous chap Functions menu Press the knob to display a screen that permits the individual selection of the six indication screens select Done to exit Setup menu page 1 Setup menu page 2 Audio volume Adjust the volume for the audio out min 1 max ...

Page 25: ...ons Autocalibration K see chapter 4 3 Fuel flow transducer calibration Tank capacity Set the tank capacity if there are more than one tank set the total capacity of the tanks Setup menu page 3 Fuel unit Set the unit of measure in liters or US Gallons keep pressed the knob for 3 seconds to modify the value NOTE Switching from one unit of measure to the other affect also the parameters that is expre...

Page 26: ...PRMC and GPRMB Check that the GPS is set to transmit this sentences Setup menu page 4 Filter Keep pressed the knob for 3 seconds to modify this value To remove fluctuation or jump in the fuel flow readings increase this value viceversa decrease the value if the fuel flow display update is too slow Default 40 The filter will not affect the accuracy of the FC1 it apply only to the displayed value of...

Page 27: ...r The calibration procedure is the following 1 With the aircraft in level fill the tank s of fuel note that in the step 4 it s required to refuel the tank s at the exact level reached here 2 Turn on the FC1 and select FILLED 3 Start a flight and burn at least half quantity of fuel in the tank s a greater amount of burned fuel will increase the accuracy and you can do this step in more flight at th...

Page 28: ...umber this number should be equal to the quantity of fuel that you have added and measured in the step 4 probably it doesn t correspond exactly because the transducer is still not calibrated and you must modify the value rotating the knob 6 Press the knob to confirm the value inserted and the display will shows the new calculated K factor Now the transducer is calibrated NOTE it s recommended to a...

Page 29: ...ht 175g Operating temperature range 10 70 C Supply voltage 12 15 V Supply current 75 mA Audio level output 2Vpp with 10Kohm load Alarm output open collector 300mA max current active low GPS input RS 232 standard data format NMEA 0183 4800 9600 19200 38400bps sentences required GPRMC and GPRMB Fuel flow resolution 0 1 liter per hour Burned remaining fuel resolution 0 1 liter 5 1 TECHNICAL SPECIFICA...

Page 30: ...a including web sites are sole property of MICROEL s r l cannot be copied or imitate without a written permission of MICROEL s r l itself and are protected by law even by means of extended international copyright and or specific patents deposited Any infringement of this statement and of MICROEL s r l intellectual property will be prosecuted 2014 Microel s r l all rights reserved WARRANTY This pro...

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Page 32: ...MICROEL s r l Via Mortara 192 194 27038 Robbio PV ITALY Tel 39 0384 670602 Fax 39 0384 671830 www flyboxavionics it ...

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