Sensor and housing arrangement for gas analysis
Various embodiments of the teachings herein include an arrangement comprising: a sensor unit; a housing with a first end, a second end, a plurality of inlet openings, and an outlet opening; and an attachment apparatus for a fixed mechanical attachment of the housing to a wall at the first end of the housing. The outlet opening is not one of the plurality of inlet openings. The sensor unit is arranged at least partially inside the housing at a first distance from the first end and at a second distance from the second end. The first distance is greater than the second distance. The outlet opening is at a third distance from the first end and a fourth distance from the second end. The third distance is greater than the fourth distance.
1 . An arrangement comprising:
a sensor unit;
a housing with a first end, a second end, a plurality of inlet openings, and an outlet opening;
a pair of electrical leads; and
an attachment apparatus for a fixed mechanical attachment of the housing to a wall at the first end of the housing;
wherein at least one electrical lead of the pair of electrical leads extends from the sensor unit to the attachment apparatus;
the outlet opening is not one of the plurality of inlet openings;
the sensor unit is arranged at least partially inside the housing at a first distance from the first end and at a second distance from the second end;
the first distance is greater than the second distance;
the outlet opening is at a third distance from the first end and a fourth distance from the second end; and
the third distance is greater than the fourth distance.
2 . The arrangement as claimed in claim 1 , wherein:
the attachment apparatus is at a fifth distance from the first end and at a sixth distance from the second end; and
the fifth distance is less than the sixth distance.
3 . The arrangement as claimed in claim 1 , wherein the attachment apparatus comprises a flange.
4 . The arrangement as claimed in claim 1 , wherein at least one electrical lead of the pair of electrical leads mechanically supports the sensor unit in relation to the housing.
5 . The arrangement as claimed in claim 1 , further comprising an evaluation unit;
wherein at least one electrical lead of the pair of electrical leads electrically connects the sensor unit to the evaluation unit.
6 . The arrangement as claimed in claim 1 , wherein the arrangement comprises precisely one outlet opening.
7 . The arrangement as claimed in claim 1 , wherein:
the housing comprises a first side extending from the first end of the housing to the second end of the housing;
the housing comprises a second side extending from the first end of the housing to the second end of the housing;
the second side is different from the first side;
at least one inlet opening of the plurality of inlet openings is arranged on the first side; and
the outlet opening is arranged on the second side.
8 . The arrangement as claimed in claim 7 , wherein each inlet opening of the plurality of inlet openings is arranged on the first side.
9 . The arrangement as claimed in claim 1 , wherein:
the housing comprises a slanted section at its second end; and
the outlet opening is part of the slanted section.
10 . The arrangement as claimed in claim 9 , wherein:
the housing comprises a first side extending from the first end of the housing to the second end of the housing;
at least one inlet opening of the plurality of inlet openings is arranged on the first side;
the housing comprises a slanted section running at an angle to the first side, at its second end; and
the outlet opening is part of the slanted section.
11 . The arrangement as claimed in claim 1 , wherein the outlet opening is arranged directly at the second end.
12 . The arrangement as claimed in claim 11 , wherein:
the housing comprises a first side extending from the first end of the housing to the second end of the housing;
the housing comprises a second side extending from the first end of the housing to the second end of the housing;
the second side is different from the first side; and
at least one inlet opening of the plurality of inlet openings is arranged on the first side.
13 . The arrangement as claimed in claim 11 , wherein:
the housing comprises a tubular section at its second end; and
the outlet opening comprises an open end of the tubular section.
14 . A combustion apparatus comprising:
a combustion chamber; and
an exhaust in fluid communication with the combustion chamber, wherein the exhaust comprises a wall and a gas stack and/or flue gas stack and/or chimney;
a sensor unit;
a housing with a first end, a second end, a plurality of inlet openings, and an outlet opening;
a pair of electrical leads; and
an attachment apparatus for a fixed mechanical attachment of the housing to the wall of the exhaust;
wherein at least one electrical lead of the pair of electrical leads extends from the sensor unit to the attachment apparatus;
the outlet opening is not one of the plurality of inlet openings;
the sensor unit is arranged at least partially inside the housing at a first distance from the first end and at a second distance from the second end;
the first distance is greater than the second distance;
the outlet opening is at a third distance from the first end and a fourth distance from the second end;
the third distance is greater than the fourth distance; and
the attachment apparatus is mechanically mounted to the wall.