Averaging arrangement and / or analyzer

Abstract

This specification relates to an apparatus and / or an analytical device for determining gas concentrations. In particular, this specification relates to such an apparatus and / or such an analytical device intended for use in a combustion device. The gas concentration to be determined might be, for example, a concentration of oxygen gas.

Description

background

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

[0002] Industrial processes utilize energy conversion through combustion to generate steam and / or heat for an industrial process. During operation, a flame from a heat generator burns in the combustion chamber of a combustion device. The heat generator converts the thermal energy of the hot combustion gases into another fluid, such as water. This hot water is then used, for example, to operate a hot water heating system and / or to heat drinking water. According to another embodiment, the thermal energy of the hot fuels and / or combustion gases can be used to heat a material, for example, in an industrial process. In yet another embodiment, the heat generator is part of a combined heat and power (CHP) plant, for example, an engine within such a plant. In another embodiment, the heat generator is a gas turbine. Furthermore, the heat generator can be used to heat water in a plant for the production of lithium and / or lithium carbonate.The exhaust gases are removed from the combustion chamber, for example via an exhaust 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 represents a cost-effective energy conversion, there is often an effort 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 emission of harmful gases. Thus, one goal of optimization is to maximize the combustion efficiency of existing furnaces and / or boilers. This is accompanied by a reduction in the production of greenhouse gases and other harmful byproducts.

[0004] Another objective is optimization for various fuels and / or fuel gases. This particularly concerns fuels and / or fuel gases containing hydrogen gas. Ideally, fuels and / or fuel gases containing more than 20% hydrogen by volume at 293 Kelvin are suitable. In some cases, the hydrogen gas content at 50% or even 70% by volume at 293 Kelvin is reached.

[0005] Combustion efficiency can be optimized by controlling the oxygen content in the exhaust gases and / or flue gases 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. This sensor unit is heated to high temperatures and operates directly in or near the combustion zone of the furnace or boiler.

[0007] Common analytical instruments 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 gas and / or flue gas flows into the analyzer, it diffuses through a filter or diffuser to the vicinity of the zirconium dioxide-based oxygen sensor. There are no pumps or other flow-inducing devices used to direct the sample flow into the analyzer. Instead, the gas passively passes through the diffuser. The sensor provides an electrical signal indicating the amount of oxygen present in the exhaust gas and / or flue gas.

[0008] The zirconium dioxide-based oxygen sensor provides potentiometric indication. Potentiometric indication is considered a reliable method for measuring oxygen levels 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. Percentage oxygen measurement is used to optimize combustion efficiency in small boilers and / or furnaces. In large plants, operators often encounter exhaust gas and / or flue gas stratification. This 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 sensor based on zirconium dioxide provides single-point oxygen measurement. Such analyzers are used to optimize combustion efficiency in power plants, incineration plants, refineries, chemical plants, and / or small-scale combustion plants. As described above, large exhaust stacks exhibit significant exhaust gas stratification with a multitude of different concentration layers in the exhaust gas. Furthermore, large flue gas stacks exhibit significant flue gas stratification with a multitude of different concentration layers in the flue gas. Additionally, large chimneys exhibit significant exhaust gas stratification and / or flue gas stratification with a multitude of different concentration layers in the exhaust gas and / or flue gas.

[0011] In such cases, it is common to use multiple oxygen sensing probes in such large combustion applications. However, the use of such probes increases the complexity and susceptibility to failure 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 providing stratification information in some large combustion applications is the use of an oxygen sensor based on a tunable diode laser. Such sensors are used in applications to provide average oxygen concentrations. These systems lack the advantage of regular in-situ calibration. Furthermore, such tunable diode lasers rely on optical radiation passing through the exhaust gas and / or flue gas. Tunable diode lasers are limited when the exhaust gas 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. Document CN2685875Y relates to an integral smoke analyzer based on zirconium dioxide. Document CN2685875Y discloses an analyzer with a measuring tip.

[0014] At one end of the measuring tip are a zirconium dioxide-based sensor, a heating element, and a temperature sensor. At the other end of the measuring tip are two gas connections and a housing. 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 function. 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 several openings. Near the second end of the measuring tip are a sensor unit and a flange for mounting the analyzer. Thus, gas flows through each of the multiple openings toward the sensor unit. The multiple openings allow for the averaging of gas concentrations.

[0016] Patent application DE102012211039A1 was filed on June 27, 2012, by Robert Bosch GmbH, 70469 Stuttgart, Germany. The application was published on January 2, 2014. DE102012211039A1 relates to a gas sensor for soot.

[0017] Patent US6015533A was granted on January 18, 2000, to Motorola Inc. (Schaumburg, IL). It relates to a sensor housing for a calorimetric sensor. The filing date of US6015533A is November 14, 1997.

[0018] Patent application US2010 / 050738A1 was filed on August 26, 2008. The application was published on March 4, 2010. US2010 / 050738A1 deals with a sensor arrangement with a thermally insulating housing.

[0019] The purpose of this disclosure is to provide an arrangement that enables gas analysis at a combustion device. Various concentrations of such gases are to be measured in such a way as to obtain a meaningful result. In particular, the result should enable the control and / or regulation of the combustion device. Summary

[0020] The above-mentioned problem is solved by an arrangement with in-situ and / or in-process averaging, as defined in claim 1. The arrangement comprises a housing and a sensor unit. The sensor unit is attached to the housing.

[0021] The housing can be configured, in particular, 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.

[0022] The first end of the housing is preferably attached to a side wall of an exhaust flue and / or flue gas stack and / or chimney by means of a flange. The second end of the housing is designed to extend into the exhaust flue and / or flue gas stack and / or chimney. In particular, the first end of the measuring tip can, for example, be attached to a side wall of the exhaust flue and / or flue gas stack and / or chimney by means of a flange. Furthermore, the second end of the measuring tip can extend into the exhaust flue and / or flue gas stack and / or chimney.

[0023] The sensor unit is located inside the housing. It is positioned near the far end of the housing. This means that the sensor unit is closer to the far end of the housing than to the far end. In other words, the distance of the sensor unit from the far end of the housing is greater than the distance of the sensor unit from the far end of the housing.

[0024] In particular, the sensor unit can be arranged and attached within the measuring tip. The sensor unit is positioned near the second end of the measuring tip. This means that the sensor unit is located closer to the second end of the measuring tip than to the first end. In other words, the first distance of the sensor unit from the first end of the measuring tip is greater than the second distance of the sensor unit from the second end of the measuring tip.

[0025] Between the first and second ends of the housing, a multitude of inlet openings are arranged. The distances between the individual inlet openings of the housing can vary. Likewise, the inlet openings of the housing can have different cross-sectional areas.

[0026] In particular, a multitude 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 cross-sectional areas.

[0027] An outlet opening is located 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. In other words, the first distance of the outlet opening from the first end of the housing is greater than the second distance of the outlet opening from the second end of the housing.

[0028] The outlet opening of the housing is preferably an outlet opening for exhaust gases and / or flue gases.

[0029] The outlet opening of the housing is different from each of the numerous inlet openings of the housing.

[0030] Advantageously, the housing includes exactly one outlet opening for exhaust gases and / or flue gases.

[0031] 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.

[0032] 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.

[0033] In a third embodiment, the second end of the housing comprises a chamfered section. The chamfered section of the housing includes the outlet opening. The outlet opening of the chamfered end of the housing may, for example, comprise or be a bore through the chamfered section of the housing.

[0034] An outlet opening can be located near 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. In other words, the first distance of the outlet opening from the first end of the measuring tip is greater than the second distance of the outlet opening from the second end of the measuring tip.

[0035] The outlet opening of the measuring tip is preferably an outlet opening for exhaust gases and / or flue gases.

[0036] The outlet opening of the measuring tip is different from each inlet of the multiple inlet openings of the measuring tip.

[0037] Advantageously, the measuring tip includes exactly one outlet opening for exhaust gases and / or flue gases.

[0038] 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, the second side being 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.

[0039] In a second embodiment, the outlet opening of the measuring tip is arranged 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.

[0040] In a third embodiment, the second end of the measuring tip comprises a beveled section. The beveled section of the measuring tip includes 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. Brief description of the drawings

[0041] Several features will become apparent to a person skilled in the art from the following detailed description of the disclosed non-restrictive embodiments. The drawings accompanying the detailed description can be briefly described as follows: FIG 1 schematically shows an arrangement and / or an analytical device for the average determination of a gas concentration in a combustion device. FIG 2schematically shows an arrangement and / or an analytical device for the average determination of a gas concentration with a sideways directed outlet opening. FIG 3 schematically shows an arrangement and / or an analyzer for the average determination of a gas concentration with an outlet opening through a beveled end. Detailed description

[0042] In FIG 1 An arrangement and / or an analyzer according to the present disclosure is illustrated. The arrangement and / or the analyzer 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 distinct from the second end 1b of the housing 1. The first end 1a is preferably opposite the second end 1b of the housing 1.

[0043] In one embodiment, the first end 1a and the second end 1b of the housing 1 are spaced at least thirty millimeters apart. The first end 1a and the second end 1b of the housing 1 can be spaced at least sixty millimeters apart. The first end 1a and the second end 1b of the housing 1 can even be spaced at least one hundred millimeters apart.

[0044] At the first end 1a of the housing 1, the housing 1 can be connected to a wall 2 of an exhaust flue and / or smoke flue 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.

[0045] In particular, the housing 1 can be connected to a side wall 2 of an exhaust flue and / or smoke flue 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.

[0046] The second end 1b of the housing 1 is designed to project into the exhaust flue and / or smoke flue and / or chimney. In one embodiment, the second end 1b of the housing 1 projects into the exhaust flue and / or smoke flue and / or chimney.

[0047] 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.

[0048] In one embodiment, the first end 1a and the second end 1b of the tubular section are spaced at least thirty millimeters apart. The first end 1a and the second end 1b of the tubular section can be spaced at least sixty millimeters apart. The first end 1a and the second end 1b of the tubular section can even be spaced at least one hundred millimeters apart.

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

[0050] The tubular section can, for example, comprise a measuring tip. In particular, the tubular section can be a measuring tip. Therefore, 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.

[0051] In one embodiment, the first end 1a and the second end 1b of the measuring tip are spaced at least thirty millimeters apart. The first end 1a and the second end 1b of the measuring tip can be spaced at least sixty millimeters apart. The first end 1a and the second end 1b of the measuring tip can even be spaced at least one hundred millimeters apart.

[0052] 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.

[0053] The housing 1 has a first side, which extends 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.

[0054] In particular, the tubular section can 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 can, for example, be its top surface. Likewise, the first side of the tubular section can be its bottom surface.

[0055] Furthermore, the measuring tip can have a first side that extends 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.

[0056] The first side is arranged in such a way as to allow the flow of exhaust gas and / or flue gas to a multitude of inlet openings 4a - 4f. Accordingly, in FIG 1 A flow direction 5 is shown in the direction of the first side of the housing 1. It is advantageous in FIG 1 A flow direction 5 is shown in the direction of the first side of the tubular section. Ideally, in FIG 1A flow direction 5 is shown in the direction of the first side of the measuring tip. Thus, the flow direction 5 allows the multiple inlet openings 4a - 4f to be approached. In particular, the flow direction 5 allows the multiple inlet openings 4a - 4f to be approached by exhaust gas and / or flue gas.

[0057] The multiple inlet openings 4a-4f are arranged along the first side. The arrangement and / or the analyzer may, for example, include two inlet openings along the first side. The arrangement and / or the analyzer may also, for example, include more than two inlet openings along the first side. Thus, the arrangement and / or the analyzer may include five or more inlet openings. Furthermore, the arrangement and / or the analyzer may include ten or more inlet openings.

[0058] Furthermore, housing 1 can, for example, include two inlet openings along the first side. Housing 1 can also, for example, include more than two inlet openings along the first side. Thus, housing 1 can include five inlet openings or more than five inlet openings. Furthermore, housing 1 can include ten inlet openings or more than ten inlet openings.

[0059] Furthermore, the tubular section can, for example, include two inlet openings along the first side. The tubular section can also, for example, include more than two inlet openings along the first side. Thus, the tubular section can include five inlet openings or more. Furthermore, the tubular section can include ten inlet openings or more.

[0060] Furthermore, the measuring tip can, for example, include two inlet openings along the first side. The measuring tip can also, for example, include more than two inlet openings along the first side. Thus, the measuring tip can include five inlet openings or more. Furthermore, the measuring tip can include ten inlet openings or more.

[0061] In one embodiment, each of the individual inlet openings of the plurality of inlet openings 4a-4f comprises an inlet opening for exhaust gas. In a particular embodiment, each of the individual inlet openings of the plurality of inlet openings 4a-4f is an inlet opening for exhaust gas. In a further embodiment, each of the individual inlet openings of the plurality of inlet openings 4a-4f comprises an inlet opening for flue gas. In a particular embodiment, each of the individual inlet openings of the plurality of inlet openings 4a-4f is an inlet opening for flue gas.

[0062] 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.

[0063] 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.

[0064] 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 differs from each of the other inlet openings in the plurality of inlet openings 4a - 4f. For example, the opening cross-section of the at least one inlet opening can differ by at least ten percent 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 also differ by at least twenty percent 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 also differ by at least fifty percent from the opening cross-section of the other inlet openings in the plurality of inlet openings 4a - 4f.

[0065] The housing 1 has a second side that extends 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.

[0066] The second side of the housing 1 ideally faces the first side of the housing 1. The second side of the housing 1 can, for example, be the bottom of the housing 1. Likewise, the second side of the housing 1 can be the top 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.

[0067] In particular, the tubular section can have a second side extending 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. Ideally, the second side of the tubular section is opposite the first side of the tubular section. The second side of the tubular section can, for example, be the underside of the tubular section. Likewise, the second side of the tubular section can be the top 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.

[0068] In particular, the measuring tip can have a second side extending between the first end 1a and the second end 1b. This second side of the measuring tip is different from the first side. Ideally, the second side of the measuring tip is opposite the first side. The second side of the measuring tip can, for example, be its underside. Likewise, the second side of the measuring tip can be its top side. In one embodiment, the first side of the measuring tip is arranged parallel to the second side of the measuring tip.

[0069] The second side is of the embodiment according to FIG 1 arranged in such a way that it allows outflow through at least one outlet opening 6a. Accordingly, in FIG 1 A flow direction 7a away from the second side of the housing 1 is shown. It is advantageous in FIG 1A flow direction 7a away from the second side of the tubular section is shown. Ideally, in FIG 1 A flow direction 7a away from the second side of the measuring tip is shown. Thus, the flow direction 7a allows an outflow through the at least one outlet opening 6a. In particular, the flow direction 7a allows an outflow of exhaust gas and / or flue gas through the at least one outlet opening 6a.

[0070] The placement of the sensor unit 8 and the outlet opening 6a at the second end 1b has a favorable effect on the flow around the sensor unit 8. Furthermore, the placement of the outlet opening 6a at the second end 1b allows for some flexibility when mounting the outlet opening 6a in an exhaust flue and / or flue gas chimney and / or chimney.

[0071] The arrangement and / or the analyzer therefore comprises at least one outlet opening 6a. The at least one outlet opening 6a is located 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 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 is d 1 greater than the second distance d 2 : d 1 > d 2

[0072] 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 at least one outlet opening 6a from the first end 1a of the tubular section. There is also a second distance.dr 2 the at least one outlet opening 6a from the second end 1b of the tubular section. The first distance is dr 1 greater than the second distance dr 2 : dr 1 > dr 2

[0073] According to another 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. dm 1 at least one outlet opening 6a from the first end 1a of the measuring tip. There is also a second distance. dm 2 the at least one outlet opening 6a from the second end 1b of the measuring tip. The first distance is dm 1 greater than the second distance dm 2 : dm 1 > dm 2

[0074] 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.

[0075] In a particular 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. Alternatively, 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 for 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 for manufacturing.

[0076] A sufficiently large opening cross-section of the at least one outlet opening 6a impedes the outflow of 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.

[0077] The arrangement and / or the analyzer 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 of the sensor unit 8 from the first end 1a of the housing 1. There is also a second distance of the sensor unit 8 from the second end 1b of the housing 1. The first distance is greater than the second distance.

[0078] Furthermore, the sensor unit 8 can be arranged and attached within the tubular section. The sensor unit 8 is located near the second end 1b of the tubular section. This means that the sensor unit 8 is located 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.

[0079] Furthermore, the sensor unit 8 can be arranged and attached in the measuring tip. The sensor unit 8 is located near the second end 1b of the measuring tip. This means that the sensor unit 8 is located 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.

[0080] The sensor unit 8 is preferably arranged between the plurality of inlet openings 4a - 4f and the at least one outlet opening 6a. This arrangement allows flow from the plurality of inlet openings 4a - 4f towards the sensor unit 8. The arrangement also allows a continuous flow from the Sensor unit 8to at least one outlet opening 6a. The arrangement particularly enables 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 continuous flow of exhaust gas and / or flue gas from the Sensor unit 8 to at least one outlet opening 6a.

[0081] With regard to averaging the contributions of the inlet openings from the plurality of inlet openings 4a - 4f, the sensor unit 8 is arranged near 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.

[0082] According to one aspect of the present disclosure, the sensor unit 8 may comprise a sensor based on zirconium dioxide.

[0083] The sensor unit 8 can, for example, be connected to an evaluation unit via a pair of electrical leads 9a, 9b. The pair of electrical leads 9a, 9b can, for example, extend from the sensor unit 8 to the flange 3. The pair of electrical leads 9a, 9b is preferably electrically insulated such that the respective electrical insulation can withstand the temperatures in an exhaust stack and / or flue gas stack and / or chimney. In particular, the pair of electrical leads 9a, 9b can be insulated such that it can withstand temperatures of 363 Kelvin. Preferably, the pair of electrical leads 9a, 9b can be insulated such that it can withstand temperatures of 378 Kelvin. Ideally, the pair of electrical leads 9a, 9b can be insulated such that it can withstand temperatures of 393 Kelvin. Temperature-resistant electrical insulation results in a heat-resistant arrangement and / or a heat-resistant analyzer.

[0084] In one embodiment, at least one electrical conductor of the pair of electrical conductors 9a, 9b simultaneously comprises a mechanical fastening of the sensor unit 8. For example, at least one electrical conductor of the pair of electrical conductors 9a, 9b can simultaneously comprise a mechanical fastening of the sensor unit 8 to the housing 1. Furthermore, at least one electrical conductor of the pair of electrical conductors 9a, 9b can simultaneously comprise a mechanical fastening of the sensor unit 8 to the tubular section. In addition, at least one electrical conductor of the pair of electrical conductors 9a, 9b can simultaneously comprise a mechanical fastening of the sensor unit 8 to the measuring tip.

[0085] In a particular embodiment, at least one electrical conductor of the pair of electrical conductors 9a, 9b simultaneously comprises an exclusive mechanical fastening of the sensor unit 8. For example, at least one electrical conductor of the pair of electrical conductors 9a, 9b can simultaneously comprise an exclusive mechanical fastening of the sensor unit 8 to the housing 1. Furthermore, at least one electrical conductor of the pair of electrical conductors 9a, 9b can simultaneously comprise an exclusive mechanical fastening of the sensor unit 8 to the tubular section. In addition, at least one electrical conductor of the pair of electrical conductors 9a, 9b can simultaneously comprise an exclusive mechanical fastening of the sensor unit 8 to the measuring tip.A purely 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.

[0086] By having at least one electrical conductor of the pair of electrical conductors 9a, 9b also serve as a mechanical fastener, the number of parts required for the arrangement and / or the analyzer is reduced. As a result of the fewer parts required, fewer such parts can fail. Therefore, the arrangement and / or the analyzer is more robust.

[0087] According to the in FIG 2In the example shown, the at least one outlet opening 6b can be located neither on the first nor on the second side. In particular, the at least one laterally directed outlet opening 6b is located neither on the first nor on the second side of the housing 1. Furthermore, the at least one laterally directed outlet opening 6b is located neither on the first nor on the second side of the tubular section. In addition, the at least one laterally directed outlet opening 6b is located neither on the first nor on the second side of the measuring tip.

[0088] 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 includes 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 section. Thus, the tubular section includes the at least one laterally directed outlet opening 6b. In addition, 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 includes the at least one laterally directed outlet opening 6b.

[0089] Accordingly, in FIG 2 A sideways flow direction 7b away from the second end 1b of the housing 1 is shown. It is advantageous in FIG 1A sideways flow direction 7b away from the second end 1b of the tubular section is shown. Ideally, in FIG 1 A lateral flow direction 7b away from the second end 1b of the measuring tip is shown. Thus, the lateral flow direction 7b allows an outflow through the at least one laterally directed outlet opening 6b. In particular, the lateral flow direction 7b allows an outflow of exhaust gas and / or flue gas through the at least one laterally directed outlet opening 6b.

[0090] The at least one laterally directed outlet opening 6b is located 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. There is also 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.

[0091] 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.

[0092] According to another 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.

[0093] According to one aspect of the present example, the at least one laterally directed outlet opening 6b has a round cross-sectional shape. According to another aspect of the present disclosure, the at least one laterally directed outlet opening 6b has a square and / or rectangular cross-sectional shape.

[0094] In a particular embodiment, the at least one laterally directed 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 laterally directed 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 laterally directed 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 for manufacturing.

[0095] A sufficiently large opening cross-section of the at least one laterally directed outlet opening 6b impedes the outflow of 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 can even be larger than the largest opening cross-section among the multitude of inlet openings 4a - 4f.

[0096] According to the in FIG 3 In the example shown, the at least one outlet opening 6c can be located neither on the first nor on the second side. In particular, the at least one inclined outlet opening 6c is located neither on the first nor on the second side of the housing 1. Furthermore, the at least one inclined outlet opening 6c is located neither on the first nor on the second side of the tubular section.

[0097] Furthermore, the at least one inclined outlet opening 6c is not located on either the first or the second side of the measuring tip.

[0098] Instead, the at least one inclined outlet opening 6c is arranged at a chamfered end 1b of the housing 1. Thus, the housing 1 includes the at least one inclined outlet opening 6c. Ideally, the chamfered end 1b of the housing 1 includes the at least one inclined outlet opening 6c. Furthermore, the at least one inclined outlet opening 6c can be arranged at a chamfered end 1b of the tubular section. Thus, the tubular section includes the at least one inclined outlet opening 6c. Ideally, the chamfered end 1b of the tubular section includes the at least one inclined outlet opening 6c. In addition, the at least one inclined outlet opening 6c can be arranged at a chamfered end 1b of the measuring tip. Thus, the measuring tip includes the at least one inclined outlet opening 6c. Ideally, the chamfered end 1b of the measuring tip includes the at least one inclined outlet opening 6c.

[0099] Accordingly, in FIG 3 A flow direction 7c directed obliquely away from the second end 1b of the housing 1 is shown. It is advantageous in FIG 1 A flow direction 7c directed obliquely away from the second end 1b of the tubular section is shown. Ideally, in FIG 1 An oblique flow direction 7c away from the second end 1b of the measuring tip is shown. Thus, the oblique flow direction 7c allows outflow through the at least one oblique outlet opening 6c. In particular, the oblique flow direction 7c allows outflow of exhaust gas and / or flue gas through the at least one oblique outlet opening 6c.

[0100] The at least one inclined outlet opening 6c is located at the second end 1b of the housing 1. In other words, there is a first distance between the at least one inclined outlet opening 6c and the first end 1a of the housing 1. There is also a second distance between the at least one inclined outlet opening 6c and the second end 1b of the housing 1. The first distance is greater than the second distance.

[0101] In one embodiment, the at least one inclined 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 inclined outlet opening 6c and the first end 1a of the tubular section. There is also a second distance between the at least one inclined outlet opening 6c and the second end 1b of the tubular section. The first distance is greater than the second distance.

[0102] According to another embodiment, the at least one inclined 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 inclined outlet opening 6c and the first end 1a of the measuring tip. There is also a second distance between the at least one inclined outlet opening 6c and the second end 1b of the measuring tip. The first distance is greater than the second distance.

[0103] 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.

[0104] In a particular embodiment, the at least one inclined 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 inclined 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. Alternatively, the at least one inclined 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 for the at least one inclined outlet opening 6c and each of the inlet openings of the plurality of inlet openings 4a-4f reduce the number of tools required for manufacturing.

[0105] A sufficiently large opening cross-section of the at least one inclined outlet opening 6c impedes the outflow of exhaust gas and / or flue gas from the at least one inclined outlet opening 6c as little as possible. The opening cross-section of the at least one inclined 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 inclined 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 inclined 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 inclined outlet opening 6c can even be larger than the largest opening cross-section among the plurality of inlet openings 4a - 4f.

[0106] In other words, the present disclosure relates to an arrangement 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) 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 distinct from the second end (1b) and the first end (1a) is opposite 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; 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).

[0107] 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) so that the housing (1) is immovable relative to the wall (2).

[0108] 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). Advantageously, the second end (1b) of the housing (1) points into, or is designed to point into, an exhaust flue and / or smoke flue and / or chimney.

[0109] 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 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).

[0110] 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).

[0111] 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).

[0112] According to one aspect of the present disclosure, the arrangement includes an analyzer. According to a specific aspect of the present disclosure, the arrangement is an analyzer.

[0113] 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.

[0114] According to one aspect of the present disclosure, the arrangement comprises an analytical device for analyzing exhaust gases and / or flue gases. According to a specific aspect of the present disclosure, the arrangement is an analytical device for analyzing exhaust gases and / or flue gases.

[0115] The present revelation also teaches one of the aforementioned instructions, 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 less than the second distance of the fastening device (3) from the second end (1b).

[0116] The present disclosure also teaches one of the aforementioned arrangements, wherein the fastening device (3) comprises a flange.

[0117] The present disclosure further teaches one of the aforementioned arrangements, wherein the fastening device (3) is a flange. The present disclosure also 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 connection. The present disclosure also teaches one of the aforementioned arrangements, wherein the fastening device (3) is a plug connection.

[0118] The present revelation also teaches one of the aforementioned instructions, wherein the arrangement comprises a pair of electrical conductors (9a, 9b); and wherein at least one electrical conductor of the pair of electrical conductors (9a, 9b) extends from the sensor unit (8) to the mounting device (3).

[0119] The present revelation further teaches one of the aforementioned precepts, wherein the arrangement comprises a pair of electrical conductors (9a, 9b); and wherein each electrical conductor of the pair of electrical conductors (9a, 9b) extends from the sensor unit (8) to the mounting device (3).

[0120] Preferably the pair of electrical conductors (9a, 9b) runs inside the housing (1).

[0121] The present disclosure also teaches one of the aforementioned arrangements comprising a pair of electrical conductors (9a, 9b), wherein at least one electrical conductor of the pair of electrical conductors (9a, 9b) mechanically supports the sensor unit (8) relative to the housing (1).

[0122] The present revelation further teaches one of the aforementioned arrangements comprising a pair of electrical conductors (9a, 9b), wherein the fastening device (3) is mechanically attached to the housing (1); and wherein at least one electrical conductor of the pair of electrical conductors (9a, 9b) is mechanically attached to the fastening device (3) such that the at least one electrical conductor of the pair of electrical conductors (9a, 9b) mechanically supports the sensor unit (8) against the housing (1).

[0123] The present revelation also teaches one of the aforementioned arrangements comprising a pair of electrical conductors (9a, 9b), wherein the fastening device (3) is mechanically attached to the housing (1); and wherein only one electrical conductor of the pair of electrical conductors (9a, 9b) is mechanically attached to the fastening device (3), such that the only one electrical conductor of the pair of electrical conductors (9a, 9b) attached to the fastening device (3) supports the sensor unit (8) against the housing (1) exclusively mechanically.

[0124] The present disclosure further teaches one of the aforementioned arrangements comprising a pair of electrical conductors (9a, 9b), wherein at least one further electrical conductor of the pair of electrical conductors (9a, 9b) is directly mechanically attached to the housing (1), such that the at least one further electrical conductor of the pair of electrical conductors (9a, 9b) mechanically supports the sensor unit (8) against the housing (1).

[0125] The present disclosure further teaches one of the aforementioned arrangements comprising a pair of electrical conductors (9a, 9b), wherein exclusively one further electrical conductor of the pair of electrical conductors (9a, 9b) is mechanically attached directly to the housing (1), such that exclusively one further electrical conductor of the pair of electrical conductors (9a, 9b) supports the sensor unit (8) against the housing (1) exclusively mechanically.

[0126] The present revelation further teaches one of the aforementioned arrangements comprising a pair of electrical conductors (9a, 9b), wherein the arrangement includes an evaluation unit; and wherein at least one electrical conductor of the pair of electrical conductors (9a, 9b) electrically connects the sensor unit (8) to the evaluation unit.

[0127] The present revelation further teaches one of the aforementioned arrangements comprising a pair of electrical conductors (9a, 9b), wherein the arrangement includes an evaluation unit; and wherein at least one electrical conductor of the pair of electrical conductors (9a, 9b) galvanically connects the sensor unit (8) to the evaluation unit.

[0128] The present revelation also teaches one of the aforementioned arrangements, the arrangement comprising exactly one outlet opening (6a - 6c).

[0129] Furthermore, the present revelation teaches one of the aforementioned instructions, 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.

[0130] The present revelation also teaches one of the aforementioned arrangements comprising a first side, wherein each inlet opening of the multitude of inlet openings (4a - 4f) is arranged on the first side.

[0131] The present revelation further teaches one of the aforementioned arrangements comprising a first and a second side, the second side running parallel to the first side.

[0132] The present revelation also teaches one of the aforementioned arrangements, wherein at least one outlet opening (6b) is arranged directly at the second end (1b).

[0133] The present revelation also teaches one of the aforementioned arrangements comprising a tubular section, 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 (6b) is arranged outside the first side and outside the second side.

[0134] The present disclosure further teaches one of the aforementioned arrangements comprising a tubular section, wherein the housing (1) comprises a tubular section at its second end (1b); and wherein the at least one outlet opening (6b) comprises an open end of the tubular section.

[0135] The present disclosure also teaches one of the aforementioned arrangements comprising a tubular section, wherein the at least one outlet opening (6b) is an open end of the tubular section.

[0136] The present disclosure further teaches one of the aforementioned arrangements comprising a tubular section, wherein the at least one outlet opening (6b) comprises a fully open end of the tubular section.

[0137] The present disclosure also teaches one of the aforementioned arrangements comprising a tubular section, wherein the at least one outlet opening (6b) is a fully open end of the tubular section.

[0138] The present revelation further teaches one of the aforementioned arrangements comprising a first and a second side and a tubular section, the second side being parallel to the first side.

[0139] The present revelation also teaches one of the aforementioned instructions, 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.

[0140] The present revelation also teaches one of the aforementioned ordinances, comprising a slanted section, 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 inclined section extending obliquely to the first side; and wherein the at least one outlet opening (6c) is part of the inclined section. According to one embodiment, the inclined section extends at an acute angle to the first side. According to another embodiment, the inclined section extends at an obtuse angle to the first side.

[0141] The present revelation further teaches one of the aforementioned ordinances, comprising a slanted section, 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; wherein the housing (1) comprises at its second end (1b) an inclined section extending obliquely to the first side and to the second side; and wherein the at least one outlet opening (6c) is part of the inclined section.

[0142] According to one embodiment, the inclined section runs at an acute angle to the first side and the second side. According to another embodiment, the inclined section runs at an obtuse angle to the first side and the second side.

[0143] The present revelation further teaches one of the aforementioned arrangements comprising a first and a second side and a slanted section, the second side running parallel to the first side.

[0144] The present disclosure also teaches a combustion device comprising a combustion chamber and an exhaust stack and / or flue gas stack and / or chimney, wherein the exhaust chimney and / or flue gas chimney and / or chimney is in fluid communication with the combustion chamber; wherein the exhaust chimney and / or flue gas chimney and / or chimney comprises a wall (2); and wherein the fastening device (3) of an arrangement according to any one of claims 1 to 14 is mechanically attached to the wall (2).

[0145] Preferably, the wall (2) comprises an interior wall and / or a side wall. Ideally, the wall (2) is an interior wall and / or a side wall.

[0146] In one embodiment, the combustion chamber of the combustion device is in fluid communication with the sensor unit (8) via the exhaust gas chimney and / or flue gas chimney and / or chimney and via at least one inlet opening of the plurality of inlet openings (4a - 4f).

[0147] The above refers to individual embodiments of the disclosure. Various modifications to the embodiments can be made without deviating from the underlying idea and without leaving the scope of this disclosure. The subject matter of the present disclosure is defined by the following.

[0148] Claims. Various modifications to the embodiments can be made without leaving the scope of protection of the following claims.

Claims

1. Arrangement 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 comprises an attachment apparatus (3) for mechanical attachment of the housing (1) to a wall (2) at the first end (1a) of the housing (1), so that the housing (1) is essentially immovable in relation to the wall (2); wherein the first end (1a) is different from the second end (1b) and the first end (1a) lies opposite 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 in the inside of the housing (1) and is at a first distance from the first end (1a) and at a second distance from the second end; wherein the first distance between the sensor unit (8) and the first end (1a) is greater than the second distance between the sensor unit (8) and the second end (1b); wherein the at least one outlet opening (6a - 6c) is at a first distance from the first end (1a) and at a second distance from the second end (1b); and wherein the first distance between the at least one outlet opening (6a - 6c) and the first end (1a) is greater than the second distance between the at least one outlet opening (6a - 6c) and the second end (1b).

2. The arrangement according to claim 1, wherein the attachment apparatus (3) is at a first distance from the first end (1a) and at a second distance from the second end; and wherein the first distance between the attachment apparatus (3) and the first end (1a) is less than the second distance between the attachment apparatus (3) and the second end (1b).

3. The arrangement according to any of the claims 1 to 2, wherein the attachment apparatus (3) comprises a flange.

4. The arrangement according to any of the claims 1 to 3, wherein the arrangement comprises a pair of electrical leads (9a, 9b); and wherein at least one electrical lead of the pair of electrical leads (9a, 9b) extends from the sensor unit (8) to the attachment apparatus (3).

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

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

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

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

13. The arrangement according to any of the 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, which extends 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, at its second end (1b), the housing (1) comprises a slanted section, which runs at an angle to the first side; and wherein the at least one outlet opening (6c) is part of the slanted section.