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MGL Avionics 

Fuel management FF-2 & FF-4 

Install & User’s manual 

 

© 2002-2007 MGL & Delta Omega  

www.delta-omega.com

 

Page 16, june07 

 

Warranty 

MGL avionics warrants their products for a period of one year from date of purchase against faulty 
workmanship. Warranty is limited to the replacement of faulty components and includes the cost of 
labor. Shipping costs are for the account of the purchaser. 

Note for operation on supplies with inductive loads: 

Any operation of electronic instrumentation on power supplies that are subject to high voltages 
caused by operation of inductive loads (starter motors, solenoids, relays) are required to be fitted 
with suitable protection. 

All Smart Singles are guaranteed to withstand temporary over voltage up to 40V without additional 
protection. We recommend that measures are taken to prevent voltage transients in excess of this 
limit.  

MGL Avionics recommends the fitment of a fuse in line with a 33V TransZorb© to protect electronic 
instruments, radios and intercom systems. Only one such arrangement is required for a cluster of 
instruments. 

Please note that product warranty excludes damages caused by unprotected, unsuitable or 
incorrectly wired electrical supplies. 

This instrument is not certified by the FAA. Fitting of this instrument to certified aircraft is 
subject to the rules and conditions pertaining to such in your country. Please check with 
your local aviation authorities if in doubt. This instrument is intended for ultralight, 
microlight, homebuilt and experimental aircraft. Operation of this instrument is the sole 
responsibility of the pilot in command (PIC) of the aircraft. This person must be proficient 
and carry a valid and relevant pilot’s license. This person has to make him/herself familiar 
with the operation of this instrument and the effect of any possible failure or malfunction. 
Under no circumstances does the manufacturer condone usage of this instrument for IFR 
flights. 

WEEE 

At Delta Omega we simply believe that protecting the environment is the right thing to do. That’s 
why we support and encourage the implementation of the European WEEE Directive (Waste 
Electrical and Electronic Equipment). This Directive requires that the waste from electrical and 
electronic equipment has to be collected separately from everyday household waste for proper 
recovery. MGL’s equipment is marked according to the requirements of the EU WEEE Directive. 
The special "crossed out wheeled bin" symbol is placed on products to indicate that waste from 
electrical and electronic equipment must be subject to a selective collection. 

The Directive only applies to end of life electrical and electronic goods. Return your 
end-of-life equipment to your local authorized collection centre. Please contact 
your competent authorities for more details. 

Notes 

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Summary of Contents for FF-2

Page 1: ...Dual sender fuel management system Fuel flow Fuel range Fuel endurance Fuel level Accumulated fuel burn Differential flow 13 modes of operation DELTA OMEGA sarl 645 Route du Belin 38410 St Martin d Ur...

Page 2: ...PTT Dual fuel flow dual Tank level senders 4 Mode F PTT Single fuel flow dual Tank level senders 4 Mode DF PTT Single fuel flow dual Tank level senders 4 Mode F Single Fuel Flow 5 Mode FF Dual Fuel F...

Page 3: ...sed upon injection opening time Standard automotive fuel level senders can be used even with odd shaped tanks thanks to a comprehensive multi point calibration system Most fuel flow senders can be use...

Page 4: ...Mode DF PT Differential Fuel flow single Tank level sender Use the key to switch with another display showing remaining fuel fuel flow Fuel range and fuel endurance Mode FF CTT Dual fuel flow dual Ta...

Page 5: ...omega com Page 5 june07 Mode F Single Fuel Flow Mode FF Dual Fuel Flow Mode PT Single Tank level sender Mode PTT Dual Tank level senders Mode DF Differential Fuel flow Note This mode is used to show t...

Page 6: ...during your session will only be remembered by the instrument if you exit the menu using the Done function The menu varies depending on the mode you have selected The following pictures and descriptio...

Page 7: ...your current fuel level after fueling or defueling your aircraft This function is only available if you have a mode selected where fuel level is calculated from fuel flow Note that it is good airmans...

Page 8: ...er of pulses generated by the fuel flow sender for one liter of fuel The dual range fuel flow sender supplied by MGL Avionics has a K Factor of 7000 in the low flow mode jet installed and 1330 for the...

Page 9: ...tical line on your fuel level display This level is over and above your silent fuel reserve Each tank has its own alarm level Units Select your required units for distance and fuel quantity The follow...

Page 10: ...osition then you have a problem Please check your wiring according to the installation section of this manual You should expect the number to change in the region of at least 20 to 60 counts per calib...

Page 11: ...ll be displayed This could happen when fuel was removed instead of added between steps no fuel was added between steps the fuel level sender was moved in the wrong direction e g moving the fuel level...

Page 12: ...a 4K7 pull up resistor In all cases ensure that fuel flow through the sender is continuous and smooth Nearly all flow senders related problems are due to choosing a bad position in the fuel supply li...

Page 13: ...lect Injector High in Setup When injector is controlled through positive side select Injector Low in Setup Ensure that you enter the K factor relevant for your injection timing Note that the injector...

Page 14: ...tive fuels for this reason Please ensure that the float of the level sender moves freely at all times and that the float is large enough not to remain submerged in case the mechanism becomes sticky Th...

Page 15: ...ge 15 june07 Mechanical The front panel of the singles occupies the same space as a standard 2 25 unit popular with automotive gauges Traditional gauges have a round body while the singles have an oct...

Page 16: ...ight homebuilt and experimental aircraft Operation of this instrument is the sole responsibility of the pilot in command PIC of the aircraft This person must be proficient and carry a valid and releva...

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