Rotational measurement system for fluid meters

A fluid meter which comprises:

• a housing which includes a cavity that defines bore through which a fluid to be metered is directed;
• a rotor which is rotatably supported in the cavity and is set into rotation by the fluid flowing through the flow bore:
• a cover which is secured to the housing over the cavity to thereby contain the fluid in the flow bore;
• wherein the rotor comprises a number of blade assemblies, each of which includes two interconnected, diametrically opposite blades;
• and
• wherein each blade is laterally restrained between a first inside surface portion of the housing and a second inside surface portion of the cover and between a first retaining ring which is mounted in the housing radially inwardly of the first inside surface portion and a second retaining ring which is mounted in the cover radially inwardly of the second inside surface portion.

A fluid meter which comprises:

• a housing which includes a cavity that defines a flow bore through which a fluid to be metered is directed;
• a rotor which is rotatably supported in the cavity and is set into rotation by the fluid flowing through the flow bore;
• and
• a measurement element which is mounted in the cavity on one side of the rotor;
• and
• a block element which is mounted in the cavity on the diametrically opposite side of the rotor;
• wherein at least one of the measurement element and the block element is adjustably connected to the housing.

A fluid meter which comprises:

• a housing which includes a cavity that defines a flow bore through which a fluid to be metered is directed;
• a rotor which is rotatably supported in the cavity and is set into rotation by the fluid flowing through the flow bore;
• a first magnet which is operatively coupled to the rotor such that rotation of the rotor causes a corresponding rotation of the first magnet;
• and
• a magnetic rotary encoder which is positioned adjacent the first magnet and is configured to generate a signal representative of the absolute angular position of the first magnet and thus the rotor.