Magnetically inductive flow measuring probe, measuring arrangement and method for determining a flow rate and/or an installation angle

A magnetically inductive flow measuring probe for determining a flow rate and/or a flow velocity of a medium, comprising:

• a front part having a front end having a center;
• a housing;
• a magnetic field producing means arranged in the housing for producing a magnetic field passing through the front end;
• a measuring and evaluation unit;
• and
• three measuring electrodes arranged on the front end and forming galvanic contacts with the medium, wherein the three measuring electrodes form pairs,
• wherein the measuring and evaluation unit is adapted to measure, in each case, voltage induced between at least two measuring electrode pairs and to ascertain the flow rate and/or the flow velocity of the medium as a function of the registered voltages.

A method for determining a flow rate of a medium in a pipeline, comprising:

• providing a magnetically inductive flow measuring probe, including:
• a front part having a front end having a center;
• a housing;
• a magnetic field producing means arranged in the housing for producing a magnetic field passing through the front end;
• a measuring and evaluation unit;
• and
• three measuring electrodes arranged on the front end and forming galvanic contacts with the medium, wherein the three measuring electrodes form pairs,
• wherein the measuring and evaluation unit is adapted to measure, in each case, voltage induced between at least two measuring electrode pairs and to ascertain the flow rate and/or the flow velocity of the medium as a function of the registered voltages;
• measuring first and second measured voltages, wherein the first measured voltage lies between a first measuring electrode pair and the second measured voltage lies between a second measuring electrode pair;
• determining an installation angle α as a function of the first and second measured voltages, wherein the installation angle α is defined by a line intersecting a measuring electrode pair and a flow direction of the medium flowing through the pipeline;
• and
• determining the flow rate and/or a flow velocity as a function of the measured voltage lying between a measuring electrode pair and of the determined installation angle α.

A measuring point for determining a flow, a volume flow rate, and/or a flow velocity of a medium, comprising:

• a pipeline which conveys the medium in a longitudinal direction defined by a pipe axis;
• an opening in a wall of the pipeline;
• and
• a magnetically inductive flow measuring probe, including:
• a front part having a front end having a center;
• a housing;
• a magnetic field producing means arranged in the housing for producing a magnetic field passing through the front end;
• a measuring and evaluation unit;
• and
• three measuring electrodes arranged on the front end and forming galvanic contacts with the medium, wherein the three measuring electrodes form pairs,
• wherein the measuring and evaluation unit is adapted to measure, in each case, voltage induced between at least two measuring electrode pairs and to ascertain the flow rate and/or the flow velocity of the medium as a function of the registered voltages,
• wherein the magnetically inductive flow measuring probe is introduced through the opening into the pipeline, and
• wherein an installed angle α is defined by a line intersecting a first measuring electrode pair an a flow direction of the medium flowing through the pipeline.