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Garmin RS-232 - page 1
Microflo-L ™ Digital Fuel Management System with interface to LORAN-C and G PS receivers with RS-232 output format OPERATING MANUAL Single and Twin Engine Indicators For P/N: 91204XT-38-D Shadin ...
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Garmin RS-232 - page 2
1 TABLE OF CONTENTS 1. GENERA L DESCRIPTION .......................................................................... 3 1.1 THE SYS TEM PROVIDES ......................................................................... 4 1.1.1 SPECIF IC RANGE ............................................................................ 4 1.1.2 FUEL TO DESTI NATION ...
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Garmin RS-232 - page 3
3.2.1 NOT ENOUGH FUEL..................................................................... 14 3.2.2 RESERVE FUEL WILL BE USED................................................. 14 3.2.3 LO W ENDURANCE ....................................................................... 14 3.2.4 LO W FUEL REMAININ G ................................................. ...
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Garmin RS-232 - page 4
3 Microflo-L ™ Although not required by the FAA, it is recommended that this manual be attached to th e FAA-a pproved Flight Manual, or always kept on board for reference. 1. GENERAL DESCRIPTION Microflo-L™ is a Digita l Fuel Management System designed to provide complete fuel management information under real flight conditions without any manu ...
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Garmin RS-232 - page 5
4 1.1 THE SYSTEM PROVIDES 1.1.1 SPECIFIC RANGE Specific Range (NM/GAL) = Ground Speed (Kt.)/Fuel Flow per hour. This is an indication of how efficient the cruise is and the optimum cruise speed can be determined by selecting the power setting, which yields the highest nautical miles per gallon. 1.1.2 FUEL TO DESTINATION Microflo-L™ calculates (un ...
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Garmin RS-232 - page 6
5 1.1.5 FUEL FLOW The system provides a digital re adout of the fuel per hour to a tenth of a gallon up to 100 gallons and to the nearest gallon above 100 gallons. For the pounds version, the readout is to the nearest pound up to 999 lbs./hour and to the nearest 10 lbs. above 999 lbs./hour. 1.1.6 FUEL USED The system keeps track of the fuel used si ...
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Garmin RS-232 - page 7
6 1.2 SYSTEM COMPONENTS The system consists of three (3) basic units: the fuel flow transducer, the navigatio n receiver (Loran-C or GPS) and the panel mounted unit. 1.2.1 FUEL FLOW TRANSDUCER The fuel flow transducer mounted in the fuel line measures the flow of fuel and genera tes electrical pulses directly proportional to the fuel flow. The tran ...
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Garmin RS-232 - page 8
7 1.3 TEST FUNCTION Diagnostic software is built into the system. To activate it, press the ENTER/TEST button until all of the display digits fill with a checkerboard pattern, and then release it. This display will flash on and off three (3) times. Next, all digits will be filled with a second checkerboard pattern, the inverse of the f irst, which ...
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Garmin RS-232 - page 9
8 2. PREFLIGHT PROCEDURES MICROFLO-L is a fuel flow measuring system and NOT a quantity-sensing device. A visual inspec tion and positive determination of the usable f uel in the fuel tanks is a ne cessity. Therefore, it is imperative tha t the determ ined available usable fu el be manually entered into the system . 2.1. INITIAL PROGRAMMING The fun ...
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Garmin RS-232 - page 10
9 6. After reaching the correct total usable fuel figure, press the ENTER/TEST button and the comput er will store that number as full fuel. The word “ FUL” disappears and the com puter will return to the opera ting mode. Release the ADD/FULL toggle switch. 7. To verify that the data is stored properly, pres s the ENTER/TEST button. The comput ...
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Garmin RS-232 - page 11
10 Move the USED/REM toggle swit ch to the REM position. The system will display the fuel rem a ining on board. The pilot should confirm this figure with the actual fuel on board. 2.3 NO FUEL ADDED This automatically stores inform ation concerning previous fu el levels, even in the case of a pow er down. If no fuel is added, no action is needed in ...
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Garmin RS-232 - page 12
11 2.5 PARTIAL FUEL ADDED There are two methods to enter partial fuel: Ramping Method Add the amount of fuel from the refueling m eter to the amount of fuel remaining. Enter the total using the following steps: 1. Move USED/REM toggle switch to REM position and hold. 2. Press and hold ENTER/TEST button to increm ent fuel remaining until figure to b ...
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Garmin RS-232 - page 13
12 switch in the USED position and u se the ENTER/TEST button to control the decrem enting. Note: Adding or subtracting fuel by any method resets the fuel used value to zero. 3. INFLIGHT OPERATIONS 3.1 INSTRUMENT OPERATION 3.1.1 FUEL FLOW For Single Engine Aircraft: FUEL FLOW is displayed continuously on the left display window. For Twin Engine Air ...
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Garmin RS-232 - page 14
13 3.1.5 NAUTICAL MILES PER GALLON Nautical miles per gallo n is selected by rotating the rotary switch to the NM/GAL position. The inf ormation is shown on the right display window. 3.1.6 FUEL TO DESTINATION Fuel to destination is selected by rotating the ro tary switch to the FUEL TO DEST. position. The information is shown on the right display w ...
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Garmin RS-232 - page 15
14 3.2 WARNINGS 3.2.1 NOT ENOUGH FUEL When the rotary switch is in FUEL TO DEST. position, the information in the display window flashes if fuel on board is insufficient to reach either th e destination se lected as the active waypoint or the final dest ination (if that total distance record is provided in the seri al message). Display window shows ...
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Garmin RS-232 - page 16
15 3.3 BRIGHTNESS CONTROL The display brightness is cont rolled by the BRIGHT/DIM toggle switch. Moving the BRIGHT/DIM toggle switch to BRIGHT repeatedly will make the disp lay brighter; moving it to DIM repeatedly will dim the display. Th e default brightness after power up is full brightness. 4. EMERGENC Y PROCEDURES In case of electrical power f ...
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Garmin RS-232 - page 17
16 5. ERROR MESSAGES ERROR 1: Dues to the necessity of Group 1 settings, if the F low Meter is set to Operate Mode and the checksum of Group 1 is b ad, the display will flash: E1 . This refers to Error 1, Group 1. The flow m eter will not continue to function after this point, and will continue flashing E1 , alerting the flow meter must be serviced ...
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Garmin RS-232 - page 18
17 6. CONFIGURATION DATA ENTRY Manual Entry Mode Ordinarily, the fuel flow indicator has been set up by the factory to match the K-factor of the supplied transducers and other set-up information. However, there are built-in provisions to change the set-up. Please be sure to define and document initial set-up before attempting to make changes. Overv ...
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Garmin RS-232 - page 19
18 Group 1: Generally, Group 1 is set up by the distributor and contains information defined by the part number. However, although functions are defined here , do not change them without proper knowledge or they will affect perform ance of the indicator. Group 2: Group 2 must be set up by programming the unit in Manual Entry Mode . Group 2 settings ...
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Garmin RS-232 - page 20
Locations of the switches for the Microflo are as follows: F A C E 19 P L A T E SW4 SW3 SW2 SW1 Compone nt side of board Board Edge Each switch ha s 16 posit ions, 0- 9, A, B, C , D, E, F. Operation Mode vs. Entry Mode FE: If Switch 1 is set to F and Switch 2 is set to E, the unit is in Entry Mode . This is the only mode that will allow the setting ...
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Garmin RS-232 - page 21
Manual Entry Mode There are two ways to access the Manual Entry Page. 1. Set Switches 1 and 2 to Entry Mo de and power up. This allows access to both groups. 2. If the Switches are not set to Entry Mode , while running under normal conditions, press the TEST/ENTER button to start the test mode. When the version is displayed, press and hold the TEST ...
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Garmin RS-232 - page 22
21 The values displayed can be ad justed with the ADD/FULL toggle switch. ADD increments the value, and FULL decrem ents the value. As you hold ADD or FULL, th e scrolling rate will increase up to a maximum speed. If you wish to jump directly into the fastest scro lling speed, while holding the ADD/FULL toggle switch, pr ess the fuel USED or fuel R ...
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Garmin RS-232 - page 23
22 5. The K-factor values displayed can be adjusted with the ADD/FULL toggle switch located at the lower right corner. ADD increments the value, and FULL decrements the value. 6. Move the REM/USED switch at the upper right corner to the USED position to move to page “r” for the right engine in twin engine aircraft and repeat Step 5. 7. Press an ...
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Garmin RS-232 - page 24
23 Display Description *L xxxxx = Left K-factor (wher e xxxxx is valid from 0 to 20,000. These are in 10s. A setting of 1234 would be a K-factor of 12,340) *R xxxxx = Right K-factor (as above). *A xxxxx = L eft Fuel Flow Offset Fr equency (Hz) for Analog Models Only *B(b) xxxxx = Right Fuel Flow Offset Fr equency (Hz) for Analog Models Only *U x = ...
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Garmin RS-232 - page 25
24 7. SPECIFICATIONS Certification: TSO-C44a Maximum usable fuel: 1,800 gallons 6,822 liters 9,999 lbs 5,484 Kg @ 0.805 Kg/lit Maximum Altitude: 40,000 ft Operating temperature: -30° to 50°C Humidity: Up to 95% @ 32°C Accuracy: ± 2% Ground Speed Range: 27-600 knots Functions: Fuel Flow (sel ectable endurance warning) Fuel Used Fuel Remaining Fu ...
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Garmin RS-232 - page 26
25 COMPATIBLE RECEIVERS: ARNAV R15, R20, R21, R3 0, R40, R 50, R50V, R50i, R5000, FMS5000, Star5000, FMS7000 BENDIX/KING KLN-35 , KLN -8 9B, KL N-90, KLN-90A, KLN-90B, KL N- 94 , KL X-135, KLN-900 BFGOODRICH/ FOSTER F4, F14, 500, 501, 616, LNS- 6000 GARMIN 100, 150, 150X L, 155, 155XL, 165, 250 , 250XL, 300, 300XL GPS 400/500, G NC 420/520, GNS 430 ...
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Garmin RS-232 - page 27
8. WARRANTY INFORMATION 6831 Oxford Street St. Louis Park, MN 55426 Limited Warranty Shadin warrants this instrument and system components to be free from defects in materials and workmanship for a period of one year from the user invo ice date. Shadin will repair or replace any item under the terms of this Warranty, pr ovided the item is returned ...
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Garmin RS-232 - page 28
27 No representative is authorized to assum e any other liability for Shadin in connection with the sale or resale of Shadin’s products. If you do not agree an d accept the terms of this Warran ty, you may return the product in new condition, with receipt, within thirty (30) days for a refund. This Warranty is made only to the original user. THIS ...
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Garmin RS-232 - page 29
28 Digital Fuel Management System Data (Micro flo-L) Part Number: _________________ _________ Serial Number: _________ ___ ______________ Left/Single Tran sdu cer Part or Kit Number: _______________ ___ _______ Left/Single Transdu cer Serial Number: _______________ ___ _______ Right Transducer Par t or Kit Number: ________ _________________ Right T ...
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Garmin RS-232 - page 30
P/N OP91204-38 E 6831 Oxford Street St. Louis Park, MN 55426-4412 U.S.A. Sales Tel: (800) 328-0584 Tech Support Tel: (800) 388-2849 International Tel: (952) 927-6500 Main/Sales Fax: (952) 924-1111 Tech Support Fax: (952) 924-1122 Sales E-Mail: sales@shadin.com Tech Support E-Mail: techsupt@shadin.com Web Site: www.shadin.com ...
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