Dust filter for gas meter

A dust filter, arranged to be installed in a single-tube gas meter which comprises a measuring module arranged to measure a flow rate of a gas, as well as an inlet channel which extends upstream from the measuring module and an outlet channel which extends downstream from the measuring module, the inlet channel and the outlet channel passing through one same first plane,

• the dust filter comprising a filtering medium wherein a hole is made, a cross-section of the filtering medium and a cross-section of the hole, along a second plane perpendicular to a thickness of the filtering medium, respectively having for shapes, a shape of a cross-section of the inlet channel and a shape of a cross-section of the outlet channel along the first plane,
• the dust filter thus being arranged such that, when it is installed in the meter, such that the first plane coincides with the second plane, the gas, before entering into the measuring module, passes into the inlet channel through the filtering medium, and after exiting from the measuring module, passes into the outlet channel through the hole,
• the dust filter further comprising at least one generally flat first frame, which is positioned against a first face of the filtering medium by being fixed to it,
• the first face being a lower face of the filtering medium when the dust filter is installed in the meter, the dust filter further comprising a magnet positioned on the first frame and arranged to attract metal dust particles.