KOBOLD’s Oval Wheel Flowmeters, DON is ideal for fuel consumption measurement in diesel engines when using the dual flow inputs and the 'A-B' setting. A pair of DON flowmeters can be used with a single electronic model ZOD-Z3 to provide a net reading of fuel consumption.
In this off-shore application, a fuel consumption measurement system has been effectively implemented on diesel engines in small ships/vessels by using a pair of stainless steel flowmeters (DON-S15… for flows up to 550 l/h per flowmeter) and one ZOD-Z3 per engine. By using a pressure relief valve in the bypass line, this can prevent choking of the flowmeter or strainer in the main line causing higher differential pressure and resulting in diminishing fuel to the engine. Using higher inlet pressure opens the pressure relief valve and ensures a constant supply to the diesel engine. In some cases, the choice of a "pulsating flow” may provide an alternative option.
With this installation, the fishermen are now in a position to monitor the actual real time fuel consumption and can adapt the ship speed to optimise it. The return of investment has been seen within one month.