Averaging arrangement and / or analyzer

Abstract

Arrangement and / or analysis device with averaging.An arrangement, in particular an arrangement for analyzing exhaust gases and / or flue gases, comprising a sensor unit (8) and a housing (1) with a first (1a) and a second end (1b), with a plurality of inlet openings (4a - 4f) and with at least one outlet opening (6a - 6c); wherein the arrangement at the first end (1a) of the housing (1) additionally comprises a fastening device (3) for fastening the housing (1) to a wall (2); wherein the first end (1a) is distinct from the second end (1b) and the at least one outlet opening (6a - 6c) is distinct from each inlet opening of the plurality of inlet openings (4a - 4f); wherein the sensor unit (8) is arranged inside the housing (1) and has a first distance from the first end (1a) and a second distance from the second end; and wherein the first distance of the sensor unit (8) from the first end (1a) is greater than the second distance of the sensor unit (8) from the second end (1b).

Description

[0001] The present disclosure relates to an arrangement and / or an analytical device for determining gas concentrations. In particular, the present disclosure relates to such an arrangement and / or such an analytical device for use in a combustion device. A gas concentration to be determined can, for example, be a concentration of gaseous oxygen.

[0002] Industrial processes use energy conversion through combustion to generate steam and / or heat for an industrial process. For this purpose, a flame of a heat generator burns in the combustion chamber of a combustion device during operation. The heat generator exchanges the thermal energy of the hot combustion gases into another fluid, such as water. The warm water is used, for example, to operate a hot water heating system and / or heat drinking water. According to another embodiment, the thermal energy of the hot fuels and / or combustion gases can be used to heat a product, for example in an industrial process. According to a further embodiment, the heat generator is part of a combined heat and power plant, for example an engine of such a plant. According to another embodiment, the heat generator is a gas turbine. Furthermore, the heat generator can be used to heat water in a plant for the extraction of lithium and / or lithium carbonate.The exhaust gases are discharged from the combustion chamber, for example, via an exhaust gas chimney and / or a flue gas chimney and / or a chimney.

[0003] Some such processes involve the operation of a furnace or boiler. While combustion is a cost-effective energy conversion method, efforts are often made to maximize combustion efficiency within a process. Maximizing combustion efficiency is, among other things, a consequence of the resulting exhaust gases and / or flue gases leaving the system. These exhaust gases and / or flue gases are sometimes subject to regulations regarding the emissions of harmful gases. Thus, one goal of optimization is to maximize the combustion efficiency of existing furnaces and / or boilers. This entails a reduction in the production of greenhouse gases and other harmful byproducts.

[0004] Another goal is optimization for different fuels and / or fuel gases. This particularly applies to fuels and / or fuel gases that contain hydrogen gases. Advantageously, these are fuels and / or fuel gases that contain more than 20 percent hydrogen by volume at 293 Kelvin. In some cases, the hydrogen gas content at 293 Kelvin is 50 percent or even 70 percent by volume.

[0005] Combustion efficiency can be optimized by controlling the oxygen content in the exhaust gases and / or flue gases resulting from a combustion process. This largely ensures the oxidation of combustion byproducts.

[0006] In-situ or in-process analyzers can be used to monitor, optimize, and / or control an ongoing combustion process. Common analyzers include a sensor unit. The sensor unit is heated to high temperatures. It operates directly in or near the combustion zone of the furnace or boiler.

[0007] Known analyzers typically use a zirconium dioxide-based oxygen sensor. The oxygen sensor is located at one end of a probe that is inserted into a flue gas stream. As the exhaust and / or flue gas flows into the analyzer, it diffuses through a filter or diffuser into proximity of the zirconium dioxide-based oxygen sensor. There are no pumps and / or other flow-inducing devices used to direct the sample flow into the analyzer. Instead, the gas passes passively through the diffuser. The sensor provides an electrical signal indicating the amount of oxygen present in the exhaust and / or flue gas.

[0008] The zirconium dioxide-based oxygen sensor provides potentiometric indication. Potentiometric indication is considered a reliable oxygen measurement in combustion environments. It enables efficient and / or safe process control. Typically, a single probe is inserted into the process, for example, into the exhaust stack and / or flue gas stack and / or chimney. Percent oxygen measurement is used to optimize combustion efficiency in small boilers and / or furnaces. In large plants, the operator often encounters flue gas stratification. The flue gas stratification and / or flue gas stratification comprises numerous layers, each with a different oxygen concentration.

[0009] To obtain stratification information, operators can install multiple probes in the exhaust stack and / or flue gas stack and / or chimney for efficient and safe operation. In some cases, up to sixteen such probes can be installed.

[0010] A typical in-situ or in-process analyzer with a potentiometric zirconium dioxide-based sensor provides a single-point oxygen measurement. Such analyzers are used to optimize combustion efficiency in power plants and / or incinerators and / or refineries and / or chemical plants and / or small combustion plants. As described above, large flue gas stacks exhibit significant flue gas stratification with a multitude of different concentration layers in the flue gas. Furthermore, large chimneys exhibit significant flue gas stratification with a multitude of different concentration layers in the flue gas.

[0011] In such cases, it is common practice to use multiple oxygen detection probes in such large combustion applications. However, the use of such probes increases the complexity and error susceptibility of the entire combustion automation system. For example, each analyzer requires power and / or signal cables, calibration gas lines, and a mounting bracket.

[0012] An alternative for some large combustion applications to provide stratification information is the use of an oxygen sensor based on a tunable diode laser. Such sensors are used in applications to provide average oxygen concentrations. Such systems do not have the advantage of regular in-situ calibration. Furthermore, such tunable diode lasers rely on optical radiation that passes through the exhaust and / or flue gas. Tunable diode lasers are subject to limitations when the exhaust and / or flue gas is partially or completely opaque.

[0013] A published utility model CN2685875Y from China was filed on July 17, 2003. Utility model CN2685875Y was published on March 16, 2005. CN2685875Y deals with an integral smoke analyzer based on zirconium dioxide. CN2685875Y discloses an analyzer with a measuring tip.

[0014] A zirconium dioxide-based sensor, a heater, and a temperature sensor are attached to a first end of the measuring tip. Two gas connections and a housing are located at a second end of the measuring tip. An outlet protrudes from the housing.

[0015] An international patent application WO2022 / 064271A1 was filed on December 11, 2020 by ROSEMOUNT INC. The application was published on March 31, 2022. WO2022 / 064271A1 claims priority from September 24, 2020. Application WO2022 / 064271A1 relates to an in-situ analyzer with averaging. WO2022 / 064271A1 discloses an analyzer with a measuring tip. The measuring tip has a first and a second end. Between the first and second ends of the measuring tip are a plurality of openings. Near the second end of the measuring tip are a sensor unit and a flange for attaching the analyzer. Thus, gas flows through each of the plurality of openings towards the sensor unit. Gas concentrations are averaged through the plurality of openings.

[0016] The aim of the present disclosure is to provide an arrangement that enables gas analysis in a combustion device. Different concentrations of such gases are to be measured in such a way that a meaningful result is obtained. In particular, the result should enable control and / or regulation of the combustion device. Summary

[0017] An assembly and / or an analytical device with in-situ and / or in-process averaging is disclosed. The assembly and / or the analytical device comprises a housing and a sensor unit. The sensor unit is attached to the housing.

[0018] The housing can, in particular, be designed as a measuring tip. The housing comprises a first and a second end. The first end of the housing is different from the second end of the housing. The first end of the housing is arranged opposite the second end of the housing. In particular, the measuring tip can comprise a first and a second end. The first end of the measuring tip is different from the second end of the measuring tip. The first end of the measuring tip is arranged opposite the second end of the measuring tip.

[0019] The first end of the housing is preferably arranged by means of a flange on a side wall of an exhaust gas stack and / or flue gas stack and / or chimney. The second end of the housing is provided to extend into the exhaust gas stack and / or flue gas stack and / or chimney. In particular, the first end of the measuring tip can be arranged, for example, by means of a flange on a side wall of the exhaust gas stack and / or flue gas stack and / or chimney. Furthermore, the second end of the measuring tip can extend into the exhaust gas stack and / or flue gas stack and / or chimney.

[0020] The sensor unit is arranged in the housing. The sensor unit is arranged near the second end of the housing. This means that the sensor unit is arranged closer to the second end of the housing than to the first end of the housing. In other words, a first distance of the sensor unit from the first end of the housing is greater than a second distance of the sensor unit from the second end of the housing.

[0021] In particular, the sensor unit can be arranged and secured in the measuring tip. The sensor unit is arranged near the second end of the measuring tip. This means that the sensor unit is arranged closer to the second end of the measuring tip than to the first end of the measuring tip. In other words, a first distance of the sensor unit from the first end of the measuring tip is greater than a second distance of the sensor unit from the second end of the measuring tip.

[0022] A plurality of inlet openings are arranged between the first end of the housing and the second end of the housing. The distances between the individual inlet openings of the housing can vary. Likewise, the inlet openings of the housing can have different opening cross-sections.

[0023] In particular, a plurality of inlet openings can be arranged between the first end of the measuring tip and the second end of the measuring tip. The distances between the individual inlet openings of the measuring tip can vary. Likewise, the inlet openings of the measuring tip can have different opening cross-sections.

[0024] An outlet opening is arranged near or at the second end of the housing. This means that the outlet opening is closer to the second end of the housing than to the first end of the housing. In other words, a first distance of the outlet opening from the first end of the housing is greater than a second distance of the outlet opening from the second end of the housing.

[0025] The outlet opening of the housing is preferably an outlet opening for exhaust gases and / or flue gases.

[0026] The outlet port of the housing is different from each of the plurality of inlet ports of the housing.

[0027] Advantageously, the housing comprises exactly one outlet opening for exhaust gases and / or flue gases.

[0028] In a first embodiment, the inlet openings are arranged on a first side of the housing. The outlet opening is arranged on a second side of the housing, the second side being opposite the first side. The first side of the housing is different from the first end and the second end of the housing. The second side of the housing is different from the first end and the second end of the housing.

[0029] In a second embodiment, the outlet opening of the housing is located at the second end of the housing. This outlet opening can, for example, comprise or be a bore through the second end of the housing.

[0030] In a third embodiment, the second end of the housing comprises a beveled portion. The beveled portion of the housing comprises the outlet opening. The outlet opening of the beveled end of the housing can, for example, comprise or be a bore through the beveled portion of the housing.

[0031] An outlet opening can be located near the second end of the measuring tip or at the second end of the measuring tip. This means that the outlet opening is closer to the second end of the measuring tip than to the first end of the measuring tip. In other words, a first distance of the outlet opening from the first end of the measuring tip is greater than a second distance of the outlet opening from the second end of the measuring tip.

[0032] The outlet opening of the measuring tip is preferably an outlet opening for exhaust gases and / or flue gases.

[0033] The outlet port of the probe tip is different from each of the plurality of inlet ports of the probe tip.

[0034] Advantageously, the measuring tip comprises exactly one outlet opening for exhaust gases and / or flue gases.

[0035] In a first embodiment, the inlet openings are arranged on a first side of the measuring tip. The outlet opening is arranged on a second side of the measuring tip, wherein the second side is opposite the first side. The first side of the measuring tip is different from the first end and the second end of the measuring tip. The second side of the measuring tip is different from the first end and the second end of the measuring tip.

[0036] In a second embodiment, the outlet opening of the measuring tip is located at the second end of the measuring tip. This outlet opening can, for example, comprise or be a bore through the second end of the measuring tip.

[0037] In a third embodiment, the second end of the measuring tip comprises a beveled section. The beveled section of the measuring tip comprises the outlet opening. The outlet opening of the beveled end of the measuring tip can, for example, comprise or be a bore through the beveled section of the measuring tip. Short description of the drawings

[0038] Various features will become apparent to those skilled in the art from the following detailed description of the disclosed non-limiting embodiments. The drawings accompanying the detailed description may be briefly described as follows: FIG 1 shows schematically an arrangement and / or an analysis device for the averaging determination of a gas concentration in a combustion device. FIG 2shows schematically an arrangement and / or an analysis device for the averaging determination of a gas concentration with a sideways directed outlet opening. FIG 3 shows schematically an arrangement and / or an analysis device for the averaging determination of a gas concentration with an outlet opening through a bevelled end. Detailed description

[0039] In FIG 1 An assembly and / or an analytical device according to the present disclosure is illustrated. The assembly and / or the analytical device comprises a housing 1. The housing 1 comprises a first end 1a and a second end 1b. The first end 1a of the housing 1 is different from the second end 1b of the housing 1. The first end 1a is preferably opposite the second end 1b of the housing 1.

[0040] In one embodiment, the first end 1a of the housing 1 and the second end 1b of the housing 1 are spaced apart by at least 30 millimeters. The first end 1a and the second end 1b of the housing 1 can be spaced apart by at least 60 millimeters. The first end 1a and the second end 1b of the housing 1 can even be spaced apart by at least 100 millimeters.

[0041] At the first end 1a of the housing 1, the housing 1 can be connected to a wall 2 of an exhaust gas stack and / or flue gas stack and / or chimney. The connection between the housing 1 and the wall 2 can be made, for example, by means of a flange 3. In particular, the housing 1 can be attached to the wall 2 by means of the flange 3.

[0042] In particular, the housing 1 can be connected to a side wall 2 of an exhaust gas stack and / or flue gas stack and / or chimney. The connection between the housing 1 and the side wall 2 can be made, for example, by means of a flange 3. In particular, the housing 1 can be attached to the side wall 2 by means of the flange 3.

[0043] The second end 1b of the housing 1 is designed to extend into the exhaust gas stack and / or flue gas stack and / or chimney. In one embodiment, the second end 1b of the housing 1 extends into the exhaust gas stack and / or flue gas stack and / or chimney.

[0044] In one embodiment, the housing 1 comprises a tubular section between the first end 1a and the second end 2. Thus, the first end 1a of the housing 1 is a first end 1a of the tubular section. The second end 1b of the housing 1 is a second end 1b of the tubular section.

[0045] In one embodiment, the first end 1a of the tubular section and the second end 1b of the tubular section are spaced apart by at least 30 millimeters. The first end 1a and the second end 1b of the tubular section can be spaced apart by at least 60 millimeters. The first end 1a and the second end 1b of the tubular section can even be spaced apart by at least 100 millimeters.

[0046] The tubular section may, for example, have a round cross-sectional shape. The tubular section may, for example, also have a square and / or rectangular cross-sectional shape.

[0047] The tubular section can, for example, comprise a measuring tip. The tubular section can, in particular, be a measuring tip. Thus, the first end 1a of the housing 1 is a first end 1a of the measuring tip. The second end 1b of the housing 1 is a second end 1b of the measuring tip.

[0048] In one embodiment, the first end 1a of the measuring tip and the second end 1b of the measuring tip are spaced apart by at least 30 millimeters. The first end 1a and the second end 1b of the measuring tip can be spaced apart by at least 60 millimeters. The first end 1a and the second end 1b of the measuring tip can even be spaced apart by at least 100 millimeters.

[0049] The measuring tip can, for example, have a round cross-sectional shape. The measuring tip can also, for example, have a square and / or rectangular cross-sectional shape.

[0050] The housing 1 has a first side extending between the first end 1a and the second end 1b of the housing 1. The first side of the housing 1 can, for example, be a top side of the housing 1. Likewise, the first side of the housing 1 can be a bottom side of the housing 1.

[0051] In particular, the tubular section may have a first side extending between the first end 1a and the second end 1b of the tubular section. The first side of the tubular section may, for example, be an upper side of the tubular section. Likewise, the first side of the tubular section may be an underside of the tubular section.

[0052] Furthermore, the measuring tip can have a first side extending between the first end 1a and the second end 1b of the measuring tip. The first side of the measuring tip can, for example, be a top side of the measuring tip. Likewise, the first side of the measuring tip can be a bottom side of the measuring tip.

[0053] The first side is arranged in such a way that it allows the flow of exhaust gas and / or flue gas to a plurality of inlet openings 4a - 4f. Accordingly, FIG 1 a flow direction 5 is drawn in the direction of the first side of the housing 1. Advantageously, FIG 1 a flow direction 5 towards the first side of the tubular section is shown. Ideally, FIG 1a flow direction 5 is drawn in the direction of the first side of the measuring tip. Thus, the flow direction 5 enables the flow of exhaust gas and / or flue gas to the plurality of inlet openings 4a-4f. In particular, the flow direction 5 enables the flow of exhaust gas and / or flue gas to the plurality of inlet openings 4a-4f.

[0054] The plurality of inlet openings 4a-4f are arranged along the first side. The arrangement and / or the analysis device can, for example, comprise two inlet openings along the first side. The arrangement and / or the analysis device can, for example, also comprise two or more inlet openings along the first side. Thus, the arrangement and / or the analysis device can comprise five or more than five inlet openings. Furthermore, the arrangement and / or the analysis device can comprise ten or more than ten inlet openings.

[0055] Furthermore, the housing 1 can, for example, comprise two inlet openings along the first side. The housing 1 can, for example, also comprise two or more inlet openings along the first side. Thus, the housing 1 can comprise five or more than five inlet openings. Furthermore, the housing 1 can comprise ten or more than ten inlet openings.

[0056] Furthermore, the tubular section can, for example, comprise two inlet openings along the first side. The tubular section can, for example, also comprise two or more inlet openings along the first side. Thus, the tubular section can comprise five or more than five inlet openings. Furthermore, the tubular section can comprise ten or more than ten inlet openings.

[0057] Furthermore, the measuring tip can, for example, comprise two inlet openings along the first side. The measuring tip can, for example, also comprise two or more inlet openings along the first side. Thus, the measuring tip can comprise five or more than five inlet openings. Furthermore, the measuring tip can comprise ten or more than ten inlet openings.

[0058] In one embodiment, the individual inlet openings of the plurality of inlet openings 4a-4f each comprise an inlet opening for exhaust gas. In a specific embodiment, the individual inlet openings of the plurality of inlet openings 4a-4f each comprise an inlet opening for exhaust gas. In a further embodiment, the individual inlet openings of the plurality of inlet openings 4a-4f each comprise an inlet opening for flue gas. In a specific embodiment, the individual inlet openings of the plurality of inlet openings 4a-4f each comprise an inlet opening for flue gas.

[0059] According to one aspect of the present disclosure, at least one inlet opening of the plurality of inlet openings 4a-4f has a round cross-sectional shape. According to another aspect of the present disclosure, at least one inlet opening of the plurality of inlet openings 4a-4f has a square and / or rectangular cross-sectional shape.

[0060] According to a related aspect of the present disclosure, each inlet opening of the plurality of inlet openings 4a-4f has a round cross-sectional shape. According to another related aspect of the present disclosure, each inlet opening of the plurality of inlet openings 4a-4f has a square and / or rectangular cross-sectional shape.

[0061] For better mixingThe individual inlet openings of the plurality of inlet openings 4a-4f can have different opening cross-sections. Thus, at least one inlet opening can have an opening cross-section that is different from each opening cross-section of the other inlet openings in the plurality of inlet openings 4a-4f. The opening cross-section of the at least one inlet opening can, for example, be at least ten percent different from the opening cross-section of the other inlet openings in the plurality of inlet openings 4a-4f. The opening cross-section of the at least one inlet opening can likewise be at least twenty percent different from the opening cross-section of the other inlet openings in the plurality of inlet openings 4a-4f. The opening cross-section of the at least one inlet opening can likewise be at least fifty percent different from the opening cross-section of the other inlet openings in the plurality of inlet openings 4a-4f.

[0062] The housing 1 has a second side extending between the first end 1a and the second end 1b of the housing 1. The second side of the housing 1 is different from the first side of the housing 1. In other words, the first and second sides do not overlap.

[0063] The second side of the housing 1 is ideally opposite the first side of the housing 1. The second side of the housing 1 can, for example, be a bottom side of the housing 1. Likewise, the second side of the housing 1 can be a top side of the housing 1. In one embodiment, the first side of the housing 1 is arranged parallel to the second side of the housing 1.

[0064] In particular, the tubular section can have a second side which extends between the first end 1a and the second end 1b of the tubular section. The second side of the tubular section is different from the first side of the tubular section. The second side of the tubular section is ideally opposite the first side of the tubular section. The second side of the tubular section can, for example, be an underside of the tubular section. Likewise, the second side of the tubular section can be an upper side of the tubular section. In one embodiment, the first side of the tubular section is arranged parallel to the second side of the tubular section.

[0065] In particular, the measuring tip can have a second side which extends between the first end 1a and the second end 1b of the measuring tip. The second side of the measuring tip is different from the first side of the measuring tip. The second side of the measuring tip is ideally opposite the first side of the measuring tip. The second side of the measuring tip can, for example, be an underside of the measuring tip. Likewise, the second side of the measuring tip can be an upper side of the measuring tip. In one embodiment, the first side of the measuring tip is arranged parallel to the second side of the measuring tip.

[0066] The second side is according to the embodiment FIG 1 arranged in such a way that it allows the outflow through at least one outlet opening 6a. Accordingly, FIG 1 a flow direction 7a away from the second side of the housing 1 is shown. Advantageously, FIG 1a flow direction 7a away from the second side of the tubular section is shown. Ideally, FIG 1 a flow direction 7a away from the second side of the measuring tip is shown. Thus, the flow direction 7a enables an outflow through the at least one outlet opening 6a. In particular, the flow direction 7a enables an outflow of exhaust gas and / or flue gas through the at least one outlet opening 6a.

[0067] The placement of the sensor unit 8 and the outlet opening 6a at the second end 1b has a favorable effect on the airflow around the sensor unit 8. Furthermore, the placement of the outlet opening 6a at the second end 1b allows for some flexibility when installing the outlet opening 6a in an exhaust gas stack and / or flue gas stack and / or chimney.

[0068] The arrangement and / or the analysis device accordingly comprises at least one outlet opening 6a. The at least one outlet opening 6a is arranged closer to the second end 1b of the housing 1 than to the first end 1a of the housing 1. In other words, there is a first distance d 1 the at least one outlet opening 6a from the first end 1a of the housing 1. There is also a second distance d 2 the at least one outlet opening 6a from the second end 1b of the housing 1. The first distance d 1 greater than the second distance d 2 : d 1 > d 2

[0069] In one embodiment, the at least one outlet opening 6a is arranged closer to the second end 1b of the tubular section than to the first end 1a of the tubular section. In other words, there is a first distance dr 1 the at least one outlet opening 6a from the first end 1a of the tubular section. There is also a second distancedr 2 the at least one outlet opening 6a from the second end 1b of the tubular section. The first distance dr 1 greater than the second distance dr 2 : dr 1 > dr 2

[0070] According to a further embodiment, the at least one outlet opening 6a is arranged closer to the second end 1b of the measuring tip than to the first end 1a of the measuring tip. In other words, there is a first distance dm1 the at least one outlet opening 6a from the first end 1a of the measuring tip. There is also a second distance dm2 the at least one outlet opening 6a from the second end 1b of the measuring tip. The first distance dm1 greater than the second distance dm2 : dm 1 > dm 2

[0071] According to one aspect of the present disclosure, the at least one outlet opening 6a has a round cross-sectional shape. According to another aspect of the present disclosure, the at least one outlet opening 6a has a square and / or rectangular cross-sectional shape.

[0072] In a specific embodiment, the at least one outlet opening 6a and each of the inlet openings of the plurality of inlet openings 4a-4f have the same cross-sectional shapes. For example, the at least one outlet opening 6a and each of the inlet openings of the plurality of inlet openings 4a-4f can each have a round cross-sectional shape. For example, the at least one outlet opening 6a and each of the inlet openings of the plurality of inlet openings 4a-4f can each have a square and / or rectangular cross-sectional shape. Identical cross-sectional shapes of the at least one outlet opening 6a and each of the inlet openings of the plurality of inlet openings 4a-4f reduce the number of tools required during production.

[0073] A sufficiently large opening cross-section of the at least one outlet opening 6a impedes the outflow of the exhaust gas and / or flue gas from the at least one outlet opening 6a as little as possible. The opening cross-section of the at least one outlet opening 6a is advantageously at least as large as the smallest opening cross-section among the plurality of inlet openings 4a-4f. The opening cross-section of the at least one outlet opening 6a is preferably at least as large as the arithmetic mean of the opening cross-sections of the plurality of inlet openings 4a-4f. The opening cross-section of the at least one outlet opening 6a is ideally at least as large as the largest opening cross-section among the plurality of inlet openings 4a-4f. The opening cross-section of the at least one outlet opening 6a can even be larger than the largest opening cross-section among the plurality of inlet openings 4a-4f.

[0074] The arrangement and / or the analysis device further comprises a sensor unit 8. The sensor unit 8 is arranged in the housing 1. The sensor unit 1 is arranged near the second end 1b of the housing 1. This means that the sensor unit 8 is arranged closer to the second end 1b of the housing 1 than to the first end of the housing 1. In other words, there is a first distance between the sensor unit 8 and the first end 1a of the housing 1. There is also a second distance between the sensor unit 8 and the second end 1b of the housing 1. The first distance is greater than the second distance.

[0075] Furthermore, the sensor unit 8 can be arranged and secured in the tubular section. The sensor unit 8 is arranged near the second end 1b of the tubular section. This means that the sensor unit 8 is arranged closer to the second end 1b of the tubular section than to the first end 1a of the tubular section. In other words, there is a first distance between the sensor unit 8 and the first end 1a of the tubular section. There is also a second distance between the sensor unit 8 and the second end 1b of the tubular section. The first distance is greater than the second distance.

[0076] Furthermore, the sensor unit 8 can be arranged and secured in the measuring tip. The sensor unit 8 is arranged near the second end 1b of the measuring tip. This means that the sensor unit 8 is arranged closer to the second end 1b of the measuring tip than to the first end 1a of the measuring tip. In other words, there is a first distance between the sensor unit 8 and the first end 1a of the measuring tip. There is also a second distance between the sensor unit 8 and the second end 1b of the measuring tip. The first distance is greater than the second distance.

[0077] The sensor unit 8 is preferably arranged between the plurality of inlet openings 4a-4f and the at least one outlet opening 6a. The arrangement enables a flow from the plurality of inlet openings 4a-4f towards the sensor unit 8. The arrangement further enables a continued flow from the Sensor unit 8to at least one outlet opening 6a. The arrangement enables in particular a flow of exhaust gas and / or flue gas from the plurality of inlet openings 4a - 4f towards the sensor unit 8. The arrangement further enables a continued flow of exhaust gas and / or flue gas from the Sensor unit 8 to at least one outlet opening 6a.

[0078] With regard to averaging the contributions of the inlet openings from the plurality of inlet openings 4a-4f, the sensor unit 8 is arranged close to the at least one outlet opening 6a. For example, a shortest distance between the sensor unit 8 and the outlet opening 6a can be less than twenty-five millimeters. In particular, a shortest distance between the sensor unit 8 and the outlet opening 6a can be less than twelve millimeters. A shortest distance between the sensor unit 8 and the outlet opening 6a can even be less than six millimeters.

[0079] According to one aspect of the present disclosure, the sensor unit 8 may comprise a sensor based on zirconium dioxide.

[0080] The sensor unit 8 can be connected to an evaluation unit, for example, via a pair of electrical lines 9a, 9b. The pair of electrical lines 9a, 9b can extend, for example, from the sensor unit 8 to the flange 3. The pair of electrical lines 9a, 9b is preferably electrically insulated such that the respective electrical insulation can withstand the temperatures in an exhaust gas stack and / or flue gas stack and / or chimney. In particular, the pair of electrical lines 9a, 9b can be insulated such that it can withstand temperatures of 363 Kelvin. Preferably, the pair of electrical lines 9a, 9b can be insulated such that it can withstand temperatures of 378 Kelvin. Ideally, the pair of electrical lines 9a, 9b can be insulated such that it can withstand temperatures of 393 Kelvin. Temperature-resistant electrical insulation results in a heat-resistant assembly and / or a heat-resistant analysis device.

[0081] In one embodiment, at least one electrical line of the pair of electrical lines 9a, 9b simultaneously comprises a mechanical fastening of the sensor unit 8. For example, at least one electrical line of the pair of electrical lines 9a, 9b simultaneously comprises a mechanical fastening of the sensor unit 8 relative to the housing 1. Furthermore, at least one electrical line of the pair of electrical lines 9a, 9b simultaneously comprises a mechanical fastening of the sensor unit 8 relative to the tubular section. Furthermore, at least one electrical line of the pair of electrical lines 9a, 9b simultaneously comprises a mechanical fastening of the sensor unit 8 relative to the measuring tip.

[0082] In a particular embodiment, at least one electrical line of the pair of electrical lines 9a, 9b simultaneously comprises an exclusive mechanical fastening of the sensor unit 8. For example, at least one electrical line of the pair of electrical lines 9a, 9b simultaneously comprises an exclusive mechanical fastening of the sensor unit 8 relative to the housing 1. Furthermore, at least one electrical line of the pair of electrical lines 9a, 9b simultaneously comprises an exclusive mechanical fastening of the sensor unit 8 relative to the tubular section. Furthermore, at least one electrical line of the pair of electrical lines 9a, 9b simultaneously comprises an exclusive mechanical fastening of the sensor unit 8 relative to the measuring tip.An exclusive mechanical fastening supports the sensor unit 8 in such a way that no further mechanical fastening is required for a stable arrangement of the sensor unit 8.

[0083] By having at least one of the pair of electrical lines 9a, 9b simultaneously serve as a mechanical fastening element, the number of required parts of the assembly and / or the analysis device is reduced. As a result of the smaller number of required parts, fewer such parts are susceptible to failure. Thus, the assembly and / or the analysis device are more robust.

[0084] According to the FIG 2In the example shown, the at least one outlet opening 6b can also be arranged neither on the first nor on the second side. In particular, the at least one laterally directed outlet opening 6b is arranged neither on the first nor on the second side of the housing 1. Furthermore, the at least one laterally directed outlet opening 6b is arranged neither on the first nor on the second side of the tubular section. Furthermore, the at least one laterally directed outlet opening 6b is arranged neither on the first nor on the second side of the measuring tip.

[0085] Instead, the at least one laterally directed outlet opening 6b is arranged laterally at the second end 1b of the housing 1. Thus, the housing 1 comprises the at least one laterally directed outlet opening 6b. Furthermore, the at least one laterally directed outlet opening 6b can be arranged laterally at the second end 1b of the tubular portion. Thus, the tubular portion comprises the at least one laterally directed outlet opening 6b. Furthermore, the at least one laterally directed outlet opening 6b can be arranged laterally at the second end 1b of the measuring tip. Thus, the measuring tip comprises the at least one laterally directed outlet opening 6b.

[0086] Accordingly, in FIG 2 a sideways flow direction 7b away from the second end 1b of the housing 1 is shown. Advantageously, FIG 1a sideways flow direction 7b away from the second end 1b of the tubular section. Ideally, FIG 1 a sideways flow direction 7b away from the second end 1b of the measuring tip is shown. Thus, the sideways flow direction 7b enables an outflow through the at least one sideways outlet opening 6b. In particular, the sideways flow direction 7b enables an outflow of exhaust gas and / or flue gas through the at least one sideways outlet opening 6b.

[0087] The at least one laterally directed outlet opening 6b is arranged directly at the second end 1b of the housing 1. In other words, there is a first distance between the at least one laterally directed outlet opening 6b and the first end 1a of the housing 1. Furthermore, there is a second distance between the at least one laterally directed outlet opening 6b and the second end 1b of the housing 1. The first distance is greater than the second distance.

[0088] In one embodiment, the at least one laterally directed outlet opening 6b is arranged directly at the second end 1b of the tubular section. In other words, there is a first distance between the at least one laterally directed outlet opening 6b and the first end 1a of the tubular section. There is also a second distance between the at least one laterally directed outlet opening 6b and the second end 1b of the tubular section. The first distance is greater than the second distance.

[0089] According to a further embodiment, the at least one laterally directed outlet opening 6b is arranged directly at the second end 1b of the measuring tip. In other words, there is a first distance between the at least one laterally directed outlet opening 6b and the first end 1a of the measuring tip. There is also a second distance between the at least one laterally directed outlet opening 6b and the second end 1b of the measuring tip. The first distance is greater than the second distance.

[0090] According to one aspect of the present example, the at least one sideways-facing outlet opening 6b has a round cross-sectional shape. According to another aspect of the present disclosure, the at least one sideways-facing outlet opening 6b has a square and / or rectangular cross-sectional shape.

[0091] In a specific embodiment, the at least one sideways outlet opening 6b and each of the inlet openings of the plurality of inlet openings 4a-4f have the same cross-sectional shapes. For example, the at least one sideways outlet opening 6b and each of the inlet openings of the plurality of inlet openings 4a-4f can each have a round cross-sectional shape. For example, the at least one sideways outlet opening 6b and each of the inlet openings of the plurality of inlet openings 4a-4f can each have a square and / or rectangular cross-sectional shape. Identical cross-sectional shapes of the at least one outlet opening 6b and each of the inlet openings of the plurality of inlet openings 4a-4f reduce the number of tools required during production.

[0092] A sufficiently large opening cross-section of the at least one laterally directed outlet opening 6b impedes the outflow of the exhaust gas and / or flue gas from the at least one outlet opening 6b as little as possible. The opening cross-section of the at least one laterally directed outlet opening 6b is advantageously at least as large as the smallest opening cross-section among the plurality of inlet openings 4a-4f. The opening cross-section of the at least one laterally directed outlet opening 6b is preferably at least as large as the arithmetic mean of the opening cross-sections of the plurality of inlet openings 4a-4f. The opening cross-section of the at least one laterally directed outlet opening 6b is ideally at least as large as the largest opening cross-section among the plurality of inlet openings 4a-4f.The opening cross-section of the at least one laterally directed outlet opening 6b may even be larger than the largest opening cross-section among the plurality of inlet openings 4a - 4f.

[0093] According to the FIG 3 In the example shown, the at least one outlet opening 6c can also be arranged neither on the first nor on the second side. In particular, the at least one oblique outlet opening 6c is arranged neither on the first nor on the second side of the housing 1. Furthermore, the at least one oblique outlet opening 6c is arranged neither on the first nor on the second side of the tubular section. Furthermore, the at least one oblique outlet opening 6c is arranged neither on the first nor on the second side of the measuring tip.

[0094] Instead, the at least one oblique outlet opening 6c is arranged at a beveled end 1b of the housing 1. The housing 1 therefore comprises the at least one oblique outlet opening 6c. Ideally, the beveled end 1b of the housing 1 comprises the at least one oblique outlet opening 6c. Furthermore, the at least one oblique outlet opening 6c can be arranged at a beveled end 1b of the tubular section. The tubular section therefore comprises the at least one oblique outlet opening 6c. Ideally, the beveled end 1b of the tubular section comprises the at least one oblique outlet opening 6c. Furthermore, the at least one oblique outlet opening 6c can be arranged at a beveled end 1b of the measuring tip. The measuring tip therefore comprises the at least one oblique outlet opening 6c. Ideally, the beveled end 1b of the measuring tip comprises the at least one oblique outlet opening 6c.

[0095] Accordingly, in FIG 3 an obliquely directed flow direction 7c away from the second end 1b of the housing 1 is shown. Advantageously, FIG 1 an oblique flow direction 7c away from the second end 1b of the tubular section. Ideally, FIG 1 an obliquely directed flow direction 7c away from the second end 1b of the measuring tip is shown. Thus, the obliquely directed flow direction 7c enables an outflow through the at least one oblique outlet opening 6c. In particular, the obliquely directed flow direction 7c enables an outflow of exhaust gas and / or flue gas through the at least one oblique outlet opening 6c.

[0096] The at least one oblique outlet opening 6c is arranged at the second end 1b of the housing 1. In other words, there is a first distance between the at least one oblique outlet opening 6c and the first end 1a of the housing 1. There is also a second distance between the at least one oblique outlet opening 6c and the second end 1b of the housing 1. The first distance is greater than the second distance.

[0097] In one embodiment, the at least one oblique outlet opening 6c is arranged at the second end 1b of the tubular section. In other words, there is a first distance between the at least one oblique outlet opening 6c and the first end 1a of the tubular section. There is also a second distance between the at least one oblique outlet opening 6c and the second end 1b of the tubular section. The first distance is greater than the second distance.

[0098] According to a further embodiment, the at least one oblique outlet opening 6c is arranged at the second end 1b of the measuring tip. In other words, there is a first distance between the at least one oblique outlet opening 6c and the first end 1a of the measuring tip. Furthermore, there is a second distance between the at least one oblique outlet opening 6c and the second end 1b of the measuring tip. The first distance is greater than the second distance.

[0099] According to one aspect of the present example, the at least one oblique outlet opening 6c has a round cross-sectional shape. According to another aspect of the present disclosure, the at least one oblique outlet opening 6c has a square and / or rectangular cross-sectional shape.

[0100] In a specific embodiment, the at least one oblique outlet opening 6c and each of the inlet openings of the plurality of inlet openings 4a-4f have the same cross-sectional shapes. For example, the at least one oblique outlet opening 6c and each of the inlet openings of the plurality of inlet openings 4a-4f can each have a round cross-sectional shape. For example, the at least one oblique outlet opening 6c and each of the inlet openings of the plurality of inlet openings 4a-4f can each have a square and / or rectangular cross-sectional shape. Identical cross-sectional shapes of the at least one oblique outlet opening 6c and each of the inlet openings of the plurality of inlet openings 4a-4f reduce the number of tools required during production.

[0101] A sufficiently large opening cross-section of the at least one oblique outlet opening 6c impedes the outflow of the exhaust gas and / or flue gas from the at least one oblique outlet opening 6c as little as possible. The opening cross-section of the at least one oblique outlet opening 6c is advantageously at least as large as the smallest opening cross-section among the plurality of inlet openings 4a-4f. The opening cross-section of the at least one oblique outlet opening 6c is preferably at least as large as the arithmetic mean of the opening cross-sections of the plurality of inlet openings 4a-4f. The opening cross-section of the at least one oblique outlet opening 6c is ideally at least as large as the largest opening cross-section among the plurality of inlet openings 4a-4f. The opening cross-section of the at least one oblique outlet opening 6c can even be larger than the largest opening cross-section among the plurality of inlet openings 4a-4f.

[0102] In other words, the present disclosure relates to an arrangement comprising a sensor unit (8) and a housing (1) having a first (1a) and a second end (1b), having a plurality of inlet openings (4a - 4f) and having at least one outlet opening (6a - 6c); wherein the arrangement at the first end (1a) of the housing (1) comprises a fastening device (3) for mechanically fastening the housing (1) to a wall (2), such that the housing (1) is substantially immobile relative to the wall (2); wherein the first end (1a) is different from the second end (1b) and the at least one outlet opening (6a-6c) is different from each inlet opening of the plurality of inlet openings (4a-4f); wherein the sensor unit (8) is arranged inside the housing (1) and has a first distance from the first end (1a) and a second distance from the second end; wherein the first distance of the sensor unit (8) from the first end (1a) is greater than the second distance of the sensor unit (8) from the second end (1b); wherein the at least one outlet opening (6a-6c) has a first distance from the first end (1a) and a second distance from the second end (1b);and wherein the first distance of the at least one outlet opening (6a - 6c) from the first end (1a) is greater than the second distance of the at least one outlet opening (6a - 6c) from the second end (1b). ;

[0103] In one embodiment, the arrangement at the first end (1a) of the housing (1) comprises the fastening device (3) for mechanically fastening the housing (1) to a wall (2) such that the housing (1) is immobile relative to the wall (2).

[0104] In one embodiment, the second end (1b) of the housing (1) is a free end of the housing (1). In particular, the second end (1b) of the housing (1) is not designed for attachment to a wall (2). The second end (1b) of the housing (1) advantageously points into an exhaust gas stack and / or flue gas stack and / or chimney or is designed to do so.

[0105] Preferably, at least one of the plurality of inlet openings (4a-4f) is designed as an inlet opening for exhaust gas and / or flue gas into the housing (1). Ideally, each inlet opening of the plurality of inlet openings (4a-4f) is designed as an inlet opening for exhaust gas and / or flue gas into the housing (1).

[0106] Preferably, the at least one outlet opening (6a - 6c) is designed as an outlet opening for exhaust gas and / or flue gas from the housing (1).

[0107] The present disclosure also teaches one of the aforementioned arrangements, wherein the sensor unit (8) is in fluid communication with each inlet opening of the plurality of inlet openings (4a - 4f) and with the at least one outlet opening (6a - 6c).

[0108] According to one aspect of the present disclosure, the arrangement comprises an analysis device. According to a specific aspect of the present disclosure, the arrangement is an analysis device.

[0109] According to one aspect of the present disclosure, the arrangement comprises an arrangement for analyzing exhaust gases and / or flue gases. According to a specific aspect of the present disclosure, the arrangement is an arrangement for analyzing exhaust gases and / or flue gases.

[0110] According to one aspect of the present disclosure, the arrangement comprises an analysis device for analyzing exhaust gases and / or flue gases. According to a specific aspect of the present disclosure, the arrangement is an analysis device for analyzing exhaust gases and / or flue gases.

[0111] The present disclosure further teaches one of the aforementioned arrangements, wherein the fastening device (3) has a first distance from the first end (1a) and a second distance from the second end; and wherein the first distance of the fastening device (3) from the first end (1a) is smaller than the second distance of the fastening device (3) from the second end (1b).

[0112] The present disclosure also teaches one of the aforementioned arrangements, wherein the fastening device (3) comprises a flange.

[0113] The present disclosure further teaches one of the aforementioned arrangements, wherein the fastening device (3) is a flange. The present disclosure additionally teaches one of the aforementioned arrangements, wherein the fastening device (3) comprises a screw connection. The present disclosure further teaches one of the aforementioned arrangements, wherein the fastening device (3) is a screw connection. The present disclosure further teaches one of the aforementioned arrangements, wherein the fastening device (3) comprises a plug-in connection. The present disclosure further teaches one of the aforementioned arrangements, wherein the fastening device (3) is a plug-in connection.

[0114] The present disclosure also teaches one of the aforementioned arrangements, wherein the arrangement comprises a pair of electrical lines (9a, 9b); and wherein at least one electrical line of the pair of electrical lines (9a, 9b) extends from the sensor unit (8) to the fastening device (3).

[0115] The present disclosure further teaches one of the aforementioned arrangements, wherein the arrangement comprises a pair of electrical lines (9a, 9b); and wherein each electrical line of the pair of electrical lines (9a, 9b) extends from the sensor unit (8) to the fastening device (3).

[0116] Preferably, the pair of electrical lines (9a, 9b) runs within the housing (1).

[0117] The present disclosure also teaches one of the aforementioned arrangements comprising a pair of electrical lines (9a, 9b), wherein at least one electrical line of the pair of electrical lines (9a, 9b) mechanically supports the sensor unit (8) relative to the housing (1).

[0118] The present disclosure further teaches one of the aforementioned arrangements comprising a pair of electrical lines (9a, 9b), wherein the fastening device (3) is mechanically fastened to the housing (1); and wherein at least one electrical line of the pair of electrical lines (9a, 9b) is mechanically fastened to the fastening device (3), such that the at least one electrical line of the pair of electrical lines (9a, 9b) mechanically supports the sensor unit (8) relative to the housing (1).

[0119] The present disclosure also teaches one of the aforementioned arrangements comprising a pair of electrical lines (9a, 9b), wherein the fastening device (3) is mechanically fastened to the housing (1); and wherein only one electrical line of the pair of electrical lines (9a, 9b) is mechanically fastened to the fastening device (3), so that only one electrical line of the pair of electrical lines (9a, 9b) fastened to the fastening device (3) exclusively mechanically supports the sensor unit (8) relative to the housing (1).

[0120] The present disclosure further teaches one of the aforementioned arrangements comprising a pair of electrical lines (9a, 9b), wherein at least one further electrical line of the pair of electrical lines (9a, 9b) is mechanically fastened directly to the housing (1), such that the at least one further electrical line of the pair of electrical lines (9a, 9b) mechanically supports the sensor unit (8) relative to the housing (1).

[0121] The present disclosure further teaches one of the aforementioned arrangements comprising a pair of electrical lines (9a, 9b), wherein exclusively one further electrical line of the pair of electrical lines (9a, 9b) is mechanically fastened directly to the housing (1), so that exclusively one further electrical line of the pair of electrical lines (9a, 9b) exclusively mechanically supports the sensor unit (8) relative to the housing (1).

[0122] The present disclosure further teaches one of the aforementioned arrangements comprising a pair of electrical lines (9a, 9b), wherein the arrangement comprises an evaluation unit; and wherein at least one electrical line of the pair of electrical lines (9a, 9b) electrically connects the sensor unit (8) to the evaluation unit.

[0123] The present disclosure further teaches one of the aforementioned arrangements comprising a pair of electrical lines (9a, 9b), wherein the arrangement comprises an evaluation unit; and wherein at least one electrical line of the pair of electrical lines (9a, 9b) galvanically connects the sensor unit (8) to the evaluation unit.

[0124] The present disclosure also teaches one of the aforementioned arrangements, wherein the arrangement comprises exactly one outlet opening (6a - 6c).

[0125] The present disclosure further teaches one of the aforementioned arrangements, wherein the housing (1) comprises a first side extending from the first end (1a) of the housing (1) to the second end (1b) of the housing (1); wherein the housing (1) comprises a second side extending from the first end (1a) of the housing (1) to the second end (1b) of the housing (1); wherein the second side is different from the first side; wherein at least one inlet opening of the plurality of inlet openings (4a - 4f) is arranged on the first side; and wherein the at least one outlet opening (6a) is arranged on the second side.

[0126] The present disclosure further teaches one of the aforementioned arrangements comprising a first side, wherein each inlet opening of the plurality of inlet openings (4a - 4f) is arranged on the first side.

[0127] The present disclosure further teaches one of the aforementioned arrangements comprising a first and a second side, wherein the second side is parallel to the first side.

[0128] The present disclosure also teaches one of the aforementioned arrangements, wherein the at least one outlet opening (6b) is arranged directly at the second end (1b).

[0129] The present disclosure further teaches one of the aforementioned arrangements comprising a tubular portion, wherein the housing (1) comprises a first side which extends from the first end (1a) of the housing (1) to the second end (1b) of the housing (1); wherein the housing (1) comprises a second side which extends from the first end (1a) of the housing (1) to the second end (1b) of the housing (1); wherein the second side is different from the first side; wherein at least one inlet opening of the plurality of inlet openings (4a - 4f) is arranged on the first side; and wherein the at least one outlet opening (6b) is arranged outside the first side and outside the second side.

[0130] The present disclosure further teaches one of the aforementioned arrangements comprising a tubular portion, wherein the housing (1) comprises a tubular portion at its second end (1b); and wherein the at least one outlet opening (6b) comprises an open end of the tubular portion.

[0131] The present disclosure further teaches one of the aforementioned arrangements comprising a tubular portion, wherein the at least one outlet opening (6b) is an open end of the tubular portion.

[0132] The present disclosure further teaches one of the aforementioned arrangements comprising a tubular portion, wherein the at least one outlet opening (6b) comprises a fully opened end of the tubular portion.

[0133] The present disclosure further teaches one of the aforementioned arrangements comprising a tubular portion, wherein the at least one outlet opening (6b) is a fully opened end of the tubular portion.

[0134] The present disclosure further teaches one of the foregoing assemblies comprising a first and a second side and a tubular portion, wherein the second side is parallel to the first side.

[0135] The present disclosure further teaches one of the aforementioned arrangements, wherein the housing (1) comprises an inclined section at its second end (1b); and wherein the at least one outlet opening (6c) is part of the inclined section.

[0136] The present disclosure also teaches one of the aforementioned arrangements comprising an inclined portion, wherein the housing (1) comprises a first side extending from the first end (1a) of the housing (1) to the second end (1b) of the housing (1); wherein at least one inlet opening of the plurality of inlet openings (4a - 4f) is arranged on the first side; wherein the housing (1) comprises, at its second end (1b), an oblique section which runs obliquely to the first side; and wherein the at least one outlet opening (6c) is part of the oblique section.

[0137] According to one embodiment, the oblique section extends at an acute angle to the first side. According to another embodiment, the oblique section extends at an obtuse angle to the first side.

[0138] The present disclosure further teaches one of the aforementioned arrangements comprising an oblique portion, wherein the housing (1) comprises a first side which extends from the first end (1a) of the housing (1) to the second end (1b) of the housing (1); wherein the housing (1) comprises a second side which extends from the first end (1a) of the housing (1) to the second end (1b) of the housing (1); wherein the second side is different from the first side; wherein at least one inlet opening of the plurality of inlet openings (4a - 4f) is arranged on the first side; wherein the housing (1) comprises, at its second end (1b), an oblique section which runs obliquely to the first side and to the second side; and wherein the at least one outlet opening (6c) is part of the oblique section.

[0139] According to one embodiment, the oblique section extends at an acute angle to the first side and the second side. According to another embodiment, the oblique section extends at an obtuse angle to the first side and the second side.

[0140] The present disclosure further teaches one of the foregoing arrangements comprising a first and a second side and a sloped portion, wherein the second side is parallel to the first side.

[0141] The present disclosure also teaches a combustion device comprising a combustion chamber and an exhaust gas stack and / or flue gas stack and / or chimney, wherein the exhaust gas stack and / or flue gas stack and / or chimney is in fluid communication with the combustion chamber; wherein the exhaust gas stack and / or flue gas stack and / or chimney comprises a wall (2); and wherein the fastening device (3) of an arrangement according to one of claims 1 to 14 is mechanically fastened to the wall (2).

[0142] Preferably, the wall (2) comprises an inner wall and / or a side wall. Ideally, the wall (2) is an inner wall and / or a side wall.

[0143] In one embodiment, the combustion chamber of the combustion device is in fluid communication with the sensor unit (8) via the exhaust gas stack and / or flue gas stack and / or chimney and via at least one inlet opening of the plurality of inlet openings (4a - 4f).

[0144] The above relates to individual embodiments of the disclosure. Various modifications may be made to the embodiments without departing from the underlying idea and without departing from the scope of this disclosure. The subject matter of the present disclosure is defined by the claims. Various modifications may be made without departing from the scope of the following claims.

[0145] Reference symbol 1: Housing 1a, 1b: first and second end 2: Wall 3: Flange 4a - 4f: Inlet openings 5: Flow direction 6a - 6c: Outlet openings 7a - 7c: Flow directions 8: Sensor unit 9a, 9b: electrical cables

Claims

1. An arrangement comprising a sensor unit (8) and a housing (1) having a first (1a) and a second end (1b), having a plurality of inlet openings (4a - 4f) and having at least one outlet opening (6a - 6c); wherein the arrangement comprises a fastening device (3) at the first end (1a) of the housing (1) for mechanically fastening the housing (1) to a wall (2) such that the housing (1) is substantially immobile relative to the wall (2); wherein the first end (1a) is different from the second end (1b) and the at least one outlet opening (6a - 6c) is different from each inlet opening of the plurality of inlet openings (4a - 4f); wherein the sensor unit (8) is arranged inside the housing (1) and is at a first distance from the first end (1a) and a second distance from the second end; wherein the first distance of the sensor unit (8) from the first end (1a) is greater than the second distance of the sensor unit (8) from the second end (1b);wherein the at least one outlet opening (6a - 6c) has a first distance from the first end (1a) and a second distance from the second end (1b); and wherein the first distance of the at least one outlet opening (6a - 6c) from the first end (1a) is greater than the second distance of the at least one outlet opening (6a - 6c) from the second end (1b).

2. The assembly according to claim 1, wherein the fastening device (3) has a first distance from the first end (1a) and a second distance from the second end; and wherein the first distance of the fastening device (3) from the first end (1a) is smaller than the second distance of the fastening device (3) from the second end (1b).

3. The arrangement according to one of claims 1 to 2, wherein the fastening device (3) comprises a flange.

4. The arrangement according to one of claims 1 to 3, wherein the arrangement comprises a pair of electrical lines (9a, 9b); and wherein at least one electrical line of the pair of electrical lines (9a, 9b) extends from the sensor unit (8) to the fastening device (3).

5. The arrangement according to claim 4, wherein at least one electrical line of the pair of electrical lines (9a, 9b) mechanically supports the sensor unit (8) relative to the housing (1).

6. The arrangement according to one of claims 4 to 5, wherein the arrangement comprises an evaluation unit; and wherein at least one electrical line of the pair of electrical lines (9a, 9b) electrically connects the sensor unit (8) to the evaluation unit.

7. The arrangement according to one of claims 1 to 6, wherein the arrangement comprises exactly one outlet opening (6a - 6c).

8. The arrangement according to one of claims 1 to 7, wherein the housing (1) comprises a first side which extends from the first end (1a) of the housing (1) to the second end (1b) of the housing (1); wherein the housing (1) comprises a second side which extends from the first end (1a) of the housing (1) to the second end (1b) of the housing (1); wherein the second side is different from the first side; wherein at least one inlet opening of the plurality of inlet openings (4a - 4f) is arranged on the first side; and wherein the at least one outlet opening (6a) is arranged on the second side.

9. The assembly of claim 8, wherein each inlet opening of the plurality of inlet openings (4a - 4f) is arranged on the first side.

10. The arrangement according to one of claims 1 to 7, wherein the at least one outlet opening (6b) is arranged directly at the second end (1b).

11. The arrangement according to claim 10, wherein the housing (1) comprises a first side which extends from the first end (1a) of the housing (1) to the second end (1b) of the housing (1); wherein the housing (1) comprises a second side which extends from the first end (1a) of the housing (1) to the second end (1b) of the housing (1); wherein the second side is different from the first side; wherein at least one inlet opening of the plurality of inlet openings (4a - 4f) is arranged on the first side; and wherein the at least one outlet opening (6b) is arranged outside the first side and outside the second side.

12. The assembly according to any one of claims 10 to 11, wherein the housing (1) comprises a tubular portion at its second end (1b); and wherein the at least one outlet opening (6b) comprises an open end of the tubular portion.

13. The arrangement according to one of claims 1 to 7, wherein the housing (1) comprises a slanted section at its second end (1b); and wherein the at least one outlet opening (6c) is part of the slanted section.

14. The arrangement according to claim 13, wherein the housing (1) comprises a first side extending from the first end (1a) of the housing (1) to the second end (1b) of the housing (1); wherein at least one inlet opening of the plurality of inlet openings (4a - 4f) is arranged on the first side; wherein the housing (1) comprises at its second end (1b) an oblique section which runs obliquely to the first side; and wherein the at least one outlet opening (6c) is part of the oblique section.

15. A combustion device comprising a combustion chamber and an exhaust gas stack and / or flue gas stack and / or chimney, wherein the exhaust gas stack and / or flue gas stack and / or chimney is in fluid communication with the combustion chamber; wherein the exhaust gas stack and / or flue gas stack and / or chimney comprises a wall (2); and wherein the fastening device (3) of an arrangement according to one of claims 1 to 14 is mechanically fastened to the wall (2).