Magnetic sensor assembly for rotary gas meters

A counter module electronic volume corrector (EVC) for coupling with a gas meter body for sensing rotation of a counter drive shaft of the gas meter body, the counter module EVC comprising:

• an EVC body;
• a sensor probe comprising:
• a housing with an outer profile;
• a first end bearing a coupling member for connecting to a mounting surface of the EVC body;
• and
• a second end insertable into an aperture accessible from a mounting surface of a gas meter body;
• wherein the outer profile provides a complementary shape and size for friction fitting within the aperture;
• and
• wherein the outer profile is provided by an adapter sleeve.

A counter module electronic volume corrector (EVC) kit for coupling to one of a first gas meter body and a second gas meter body for sensing rotation of a respective counter drive shaft of the first gas meter body and the second gas meter body, the kit comprising:

• an EVC body;
• a sensor probe comprising:
• a probe outer profile;
• a first end bearing a coupling member for operable connection to the EVC;
• and a second end for selective insertion;
• and
• an adapter sleeve comprising:
• a sleeve outer profile;
• and a sleeve aperture to selectively receive the sensor probe via the second end;
• and
• wherein:
• the probe outer profile provides a complementary shape and size for friction fitting the sensor probe within an aperture of the first gas meter body;
• and
• the sleeve outer profile provides a complementary shape and size for friction fitting the sensor probe within an aperture of the second gas meter body when the sensor probe is within the sleeve aperture.