Particulate matter measuring device component

A particulate matter measuring device component, comprising:

• a base portion formed of ceramics and having a flow channel through which a gas flows;
• a filter portion formed of porous ceramics and disposed inside the flow channel so as to divide the flow channel into a plurality of divisions, and
• a pair of electrodes for forming an electrostatic capacitance which is disposed in the base portion so as to sandwich at least a part of the filter portion,
• the base portion having a height direction perpendicular to a length direction of the flow channel,
• when the base portion is bisected in the height direction, the flow channel being on only one bisected side of the base portion.

A particulate matter measuring device component, comprising:

• a pair of base portions which are plate-shaped members formed of ceramics, the pair of base portions being apposed so that main surfaces thereof face each other;
• a filter portion formed of porous ceramics and disposed so as to divide a space between the pair of base portions to form a flow channel;
• and
• a pair of electrodes for forming an electrostatic capacitance which is disposed in each of the pair of base portions so as to sandwich at least a part of the filter portion,
• the flow channel being located on one end side of the pair of base portions, a retaining portion being disposed on the other end side of the pair of base portions.