Temperature sensing probe assembly for fluid meter

A temperature sensing unit for sensing the temperature of fluid flowing through a meter and outputting a rotational movement to a temperature compensating unit disposed in said meter, said sensing unit comprising:

• a rotatable shaft having a distal end and a proximal end, the proximal end being connected to the temperature compensating unit in said meter, wherein said rotatable shaft provides a rotational movement to said compensating unit;
• a connector flange having a proximal end disposed proximal to the temperature compensating unit, said connector flange having an opening therethrough for passage of said rotatable shaft;
• a temperature sensor probe comprised of a predetermined length of bimetallic coil displaceable in response to temperature changes in the fluid flowing through the meter, said bimetallic coil being disposed around said rotatable shaft, said coil further having a distal end fixably connected to the distal end of said rotatable shaft and a proximal end fixably connected to said connector flange, wherein the connector flange is disposed between the compensating unit and the temperature sensor probe, said coil also having an interior side proximal to said rotatable shaft and an exterior side disposed away from said shaft;
• and wherein the temperature sensing unit further comprises
• an elongated tubular sheath disposed around the exterior side of said sensor probe, said sheath having a proximal end contacting said connector flange, wherein the proximal end of the sheath secured against removal so as to render said sheath substantially non-removable.

A temperature sensing unit for sensing the temperature of fluid flowing through a meter and outputting a rotational movement to a temperature compensating unit disposed in said meter, said sensing unit comprising:

• a rotatable shaft having a distal end and a proximal end, the proximal end being connected to the temperature compensating unit in said meter, wherein said rotatable shaft provides a rotational movement to said compensating unit;
• a connector flange having a proximal end disposed proximal to the temperature compensating unit, said connector flange having an opening therethrough for passage of said rotatable shaft;
• a temperature sensor probe comprised of a predetermined length of bimetallic coil displaceable in response to temperature changes in the fluid flowing through the meter, said bimetallic coil being disposed around said rotatable shaft, said coil further having a distal end fixably connected to the distal end of said rotatable shaft and a proximal end fixably connected to said connector flange, wherein the connector flange is disposed between the compensating and the temperature sensor probe, said coil also having an interior side proximal to said rotatable shaft and an exterior side disposed away from said shaft;
• and wherein the temperature sensing unit further comprises
• an elongated tubular sheath disposed around the exterior side of said sensor probe, said sheath having a proximal end contacting said connector flange;
• and
• a bearing located in the sheath supporting the shaft.

A temperature sensing unit for sensing temperature of fluid flowing through a meter and outputting a rotational movement to a temperature compensating unit disposed in the meter, the sensing unit comprising:

• a temperature sensor probe comprising:
• a coil displaceable in response to temperature changes in the fluid flowing through the meter, wherein the coil comprises:
• a distal end, and
• a proximal end fixed relative the temperature compensating unit;
• and
• wherein the sensing unit further comprises:
• a rotatable shaft disposed in the coil and comprising:
• a proximal end connected to the temperature compensating unit, and
• a distal end secured to the distal end of the coil, wherein displacement of the coil rotates the rotatable shaft, whereby the rotatable shaft imparts rotational movement to the compensating unit.