Cartridge and meter for receiving the cartridge

A cartridge for insertion into a meter, the interior of the meter comprising a boss having a main body and a protrusion extending from the main body, the cartridge comprising:

• an orientation member provided at one end of the cartridge, the orientation member comprising a recess having a cross-sectional shape corresponding to that of the boss and configured to receive the boss therein, the orientation member further comprising a ramp surrounding at least part of the portion of the recess corresponding to the main body, the portion of the recess which corresponds to the protrusion adjoining the lower end of the ramp via a step.

A system comprising:

• a cartridge;
• and
• a meter for receiving the cartridge therein, wherein one of the meter and the cartridge comprises a boss having a main body and a protrusion extending from the main body, and the other one of the meter and the cartridge comprises an orientation member comprising a recess having a cross-sectional shape corresponding to that of the boss and configured to receive the boss therein, the orientation member further comprising a ramp surrounding at least part of the portion of the recess corresponding to the main body, the portion of the recess which corresponds to the protrusion adjoining the lower end of the ramp via a step, wherein one of the boss and the orientation member is provided at one end of the cartridge and the other one of the boss and the orientation member is provided in the interior of the meter.

A meter for receiving a cartridge therein, the cartridge including a boss provided at one end, the boss having a main body and a protrusion extending from the main body, the meter comprising:

• an orientation member provided in the interior of the meter, the orientation member comprising a recess having a cross-sectional shape corresponding to that of the boss and configured to receive the boss therein, the orientation member further comprising a ramp surrounding the portion of the recess corresponding to the main body, the portion of the recess which corresponds to the protrusion adjoining the lower end of the ramp via a step.