Meter electronics and method for obtaining flow fluid viscosity at a reference temperature

Meter electronics (20) for obtaining a flow fluid viscosity of a flow fluid at a predetermined reference temperature, with the meter electronics (20) comprising:

• an interface (201) configured to receive sensor signals from a meter assembly (10);
• a storage system (204) configured to store a predetermined reference temperature (211), a measured fluid viscosity (214) measured with the meter assembly (10), a measured fluid temperature (215), and a temperature-viscosity relational data (218) that relates temperature to viscosity over a predetermined range of flow fluid temperatures of the flow fluid;
• and
• a processing system (203) coupled to the interface (201) and to the storage system (204), with the processing system (203) configured to obtain the measured fluid temperature (215), obtain the measured fluid viscosity (214), and generate a reference temperature viscosity (227) using the measured fluid viscosity (214) and the temperature-viscosity relational data (218), with the generated reference temperature viscosity (227) corresponding to the predetermined reference temperature (211);
• wherein the processing system (203) is configured to create the temperature-viscosity relational data (218) from two or more flow fluid curves (221), the measured fluid temperature (215), the predetermined reference temperature (211), wherein the flow fluid curves (221) reflect temperature-viscosity relationships for two or more reference flow fluids.