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OtherSensorTypes / FuelFlow

Fuel Flow Sensor

Small, plastic fuel flow sensor that produces a pulse output, the frequency of which is proportional to the flow rate through the device.

Please note, the formation of vapour should be minimised by fitting the sensor between the fuel pump and carburettor, but before any pressure regulator. The device should be mounted vertically if vapour is likely to form. Extreme care must be taken when modifying the fuel supply on a car!

Maximum safe working pressure = 10 bar

Technical Data

Jet size1mm2mm3mm4mmNo jet
Flow (1/min)0.05 - 0.50.05 - 1.50.15 - 4.50.18 - 6.50.2 - 10
Linearity % FSD2.02.01.51.51.0
Typical FS Frequency Hz142175260230235
Approx. 'K' Factor170007000350021001420
Max. Viscosity cSt1020304050
FS Pressure drop1 Bar @ 1cSt1 Bar @ 1cSt1 Bar @ 1cSt1 Bar @ 1cSt1 Bar @ 1cSt
Temperature range-25 to +125oC-25 to +125oC-25 to +125oC-25 to +125oC-25 to +125oC
Repeatability0.25%0.25%0.25%0.25%0.25%
Sensor to sensor variation5% max.5% max.5% max.5% max.5% max.
Supply voltage4.5 to 24Vdc4.5 to 24Vdc4.5 to 24Vdc4.5 to 24Vdc4.5 to 24Vdc
Current consumption10mA (typical)10mA (typical)10mA (typical)10mA (typical)10mA (typical)
OutputOpen collector (10kΩ internal pull up)Open collector (10kΩ internal pull up)Open collector (10kΩ internal pull up)Open collector (10kΩ internal pull up)Open collector (10kΩ internal pull up)
Output low100mV max.100mV max.100mV max.100mV max.100mV max.
Rise & fall times2μS max.2μS max.2μS max.2μS max.2μS max.
Wetted materialsPVDF, sapphire & Viton. Ceramic magnetPVDF, sapphire & Viton. Ceramic magnetPVDF, sapphire & Viton. Ceramic magnetPVDF, sapphire & Viton. Ceramic magnetPVDF, sapphire & Viton. Ceramic magnet

Fuel flow (Litres/second) = x / K factor

Installation

The sensor come with 3 wires, the red wire should be connected to the 5v output from the Data Logger Units, the black wire should go to the ground connection and the white wire should go to one of the frequency inputs

Page last modified on July 10, 2014, at 11:36 AM