I am measuring the volumetric flow rate of a diesel fuel using "Turbines" flow meter, both in the supply and return fuel lines of an industrial diesel engine (Caterpillar 3512B – coupled with a generator for power production), in an attempt to measure the total fuel consumption by the engine. However, the fuel temperature in the return line is higher than the fuel temperature in the supply line, thus, the viscosity of the return fuel is lower than the viscosity of the supply fuel. Due to this change in fuel viscosity, I obtain erroneous flow rate measurements.
Therefore, I was wondering if there is a way to compensate for the temperature or viscosity change of the diesel fuel in order to obtain accurate volumetric flow rate measurements.
Thank you for any idea you could provide.