The concept behind a FloScan Fuel montoring system is fairly simple – measure the flow of fuel as it travels from tank to engine with a flow sensor, then utilize a microprocessor computer to convert this raw data to rate of flow and fuel consumption. The heart of a FloScan system is an “opto-electronic”, turbine-type flow sensor which uses an infrared light source to count rotations of the turbine. A signal generator reports this information to the meterhead’s microprocessor to calculate fuel flow and the total fuel used. The design of the sensor eliminates and possibility of fuel blockage in the highly unlikely event that the turbine rotor is jammed.
Most diesel engine fuel systems employ forward and return fuel flow lines. The return flow amount must be measured and subtracted from the forward flow amount to determine consumption. Inaccuracies in flow measurement in either direction can compound the amount of error in measurement. The amount of return flow varies by engine type – from as little as 10% of fuel consumption to a much as 1000% or more – necessitating very tight margins for error when measuring flows and calculating the difference. Engines that use the return flow to cool unit injectors, the return flow temperature is substantially higher than the forward flow – leading to the possibility of error in measurement caused by the expansion of fuel. FloScan has designed special temperature compensated systems to accurately measure and compensate for these inconsistencies. Each pair of FloScan sensors (forward and return) is individually calibrated and matched to the microprocessor-driven meter head.
FloScan fuel flow technology sets the standard.
FloScan sensors are made of durable components like sapphire rotor bearings, precision aluminium and zinc die-castings, and gold-plated detectors that will preform for years without any necessary maintenance. The fuel flow sensor design has a (+/-) 0.25% repeatability over a 100/1 flow range and our fuel monitoring systems have a scant margin of error of less than 2% with on-board calibration.
FloScan fuel flow sensors are also FAA approved for use in general aviation aircraft
Gas models are the easiest to specify and install. We fit the following engine types:
– All carbureted inboard, I/O, and outboard gas engines
– All 2-stroke and 4-stroke EFI outboard gas engines
– All DFI gas O/B engines including Mercury Optimax and EvinrudeFicht
– All EFI inboard and I/O gas engines with closed loop return fuel systems such as Mercruiser and Volvo Penta engines
FloScan also fits EFI inboard and outboard engines with fuel return lines that are connected to the fuel tank. Flow sensors are installed on the feed and return fuel lines to measure the net burn rate of the engine.
Flow sensors are typically installed in-line after the filter for added protection from fuel tank debris. With certain EFI engines such as Mercruiser, the flow sensor can only be installed before the filter. Adding a basic (coarse) filter element before the sensor provides adequate protection.
Diesel models are based on the type of fuel delivery system used and each engine requires a dedicated FloScan system. These engines use a variety of fuel pumps including rotary, in-line and direct injection systems. Flow sensor selection is based on the feed and return flow rates associated with the engine. Flow sensors are installed on the feed and return lines to display net flow rate and total fuel consumption. Certain engines which use the return fuel to cool injectors will require fuel temperature compensation to ensure accurate flow measurement.
Instruments or Monitors
FloScan supplies an array of instruments to display fuel flow ranging from dashboard mounted meter heads to an NMEA2000 module with a “plug and play” connection. FloScan Multifunction digital LCD Series and GPS Interface Series meter heads and meters with pulse and analogue outputs.