In one embodiment a mass flow rate sensor measures the mass flow rate of the harvested grain.

A mass flow rate sensor system (200) is provided.

The air flow rate can be measured by a mass air flow sensor.

  Inside the air discharge opening (16) is provided a mass flow rate sensor (19) for measuring the flow rate of the air.

  On the upstream of the mass flow rate sensor (19) is provided a flow regulating grid (18) for regulating the flow of the air.

The inventive mass flowmeter (10) is arranged in the fuel supply line (3) of the injector (2).

A mass airflow sensor is disclosed that includes a heating element comprising an upstream side and a downstream side.

The self-calibration of a mass flow rate sensor is achieved by providing an electric pulse to a heater in the flow and determining a temperature variations of the fluid.

The mass airflow sensor, or maf sensor, calculates the amount of air that's coming into the engine so that the computer can add the right amount of fuel.

In various aspects of the invention a flow vortex suppression apparatus for use in an air intake duct having a mass air flow sensor is disclosed.

The mass flow sensor (LMM) comprises a sensor holder element (LF), which comprises at least one electrical line (CP2) and at least one electrical contact area (CA), which is electrically coupled to the at least one electrical line (CP2).

The instrument (10) includes a hollow needle (20), a mass flow rate sensor (50) in sealed fluid communication with a lumen (29) defined by the hollow needle (20), and a vacuum pump (40).

The present invention relates to a mass flow measurement sensor capable of sufficiently enlarging a sectional flow area of a sample fluid flowing tube while ensuring fast response time and linear range of measurement.