Method and system for determining measurement error in hydrogen concentration measurement

Abstract

The present invention relates to a computer-implemented method for generating a model (2) for determining a measurement error in the measurement of the concentration of hydrogen (105) contained in a gas mixture (102), wherein the gas mixture (102) comprises hydrogen (105) and a hydrogen-free carrier gas mixture (104), wherein - data (4, 40) on at least two different hydrogen-free carrier gas mixture components are provided, - different gas mixture components are generated based on the data (4, 40), with the hydrogen-free carrier gas mixture components and / or the hydrogen content being different in the case of the different gas mixture components, - hydrogen concentration measurement values are determined for the gas mixture components and measurement errors are determined based on the hydrogen concentration measurement values, - a model (2) is provided that maps data on the carrier gas mixture components and the hydrogen concentration measurement values to the measurement errors.

Description

Technical Field

[0001] The present invention relates to a computer-implemented method for generating a model for determining a measurement error in the measurement of the concentration of hydrogen contained in a gas mixture, wherein the gas mixture comprises hydrogen and a hydrogen-free carrier gas mixture.

[0002] The present invention also relates to a computer program product or a computer program comprising instructions which, when executed by a computer, cause the computer to perform the above method.

[0003] The present invention also relates to a computer-readable data carrier storing the above computer program product or computer program and a data carrier signal transmitting the above computer program product or computer program.

[0004] The present invention also relates to a method for determining a measurement error in the measurement of the concentration of hydrogen contained in a gas mixture, wherein the gas mixture comprises hydrogen and a hydrogen-free carrier gas mixture.

[0005] The present invention also relates to a system for measuring the hydrogen concentration, the system comprising a gas analysis device and a computing device assigned to the gas analysis device. Background Art

[0006] For the energy industry, the use of hydrogen (especially hydrogen from renewable resources) is becoming increasingly important. First of all, hydrogen plays an important role as a fuel gas in aspects such as natural gas mixtures. For example, a hydrogen fuel gas mixture can be burned in a turbine and converted into electrical energy and heat energy. The regulation of the turbine requires rapid measurement of the hydrogen concentration to maintain the stability of the operating point.

[0007] A feasible method for measuring the hydrogen concentration is partial pressure measurement. Since hydrogen has a very high thermal conductivity, a thermal conductivity sensor is usually used to measure the partial pressure of hydrogen. A gas analysis device or field device operating according to the principle of heat conduction is used for this purpose. For example, such devices can operate continuously and are mainly used for the quantitative determination of H2 or He in binary or quasi-binary gas mixtures.

[0008] Other application examples include chlor-alkali electrolysis (0...10% H2 in Cl2), metallurgy (steel production and processing), H2 measurement in the LNG (liquefied natural gas) process, ammonia synthesis, and artificial fertilizer production.

[0009] In the simplest case, a gas analysis device is used for measurement, which operates according to the principle of thermal conductivity measurement in a binary mixture, for example, measuring H2 (hydrogen) in N2 (nitrogen) or H2 in CH4 (methane), etc. Any further mixing in the carrier gas will reduce the measurement accuracy.

[0010] A method for improving the accuracy of hydrogen concentration measurement is known from US Patent Document US2011-158854 A1, which is based on the fact that the external temperature and the concentration of oxygen in the measured gas will negatively affect the accuracy of hydrogen concentration measurement. Due to the presence of oxygen, this method is not applicable to combustible gas applications.

[0011] Therefore, in the application of fuel gases (such as natural gas-hydrogen mixtures), it is necessary to adapt the measurement values according to the gas matrix present. However, since the carrier gas is not isolated and only exists in the presence of H2, this is almost impossible. Therefore, the analyzer (gas analysis device) must be prepared for all natural gas sources without complex (sometimes impossible) on-site adjustments. Summary of the Invention

[0012] Therefore, the object of the present invention is to provide a method and a system that can achieve the above preparation of the above analyzer.

[0013] According to the present invention, the above object is achieved by using the method implemented by the computer mentioned at the beginning, wherein data on at least two different hydrogen-free carrier gas mixture components is provided. The data can be in the form of a file on a storage medium, for example, in the form of a file on a portable non-volatile storage medium. For example, the data can be available on a server in a network, such as on the Internet, in the cloud or a similar server.

[0014] Based on the data on at least two different hydrogen-free carrier gas mixture components, different gas mixture components are generated (such as automatically, computer-aided) or produced (such as in tabular form on a computer). Among the different gas mixture components, the hydrogen-free carrier gas mixture components and / or the hydrogen content or hydrogen concentration are different.

[0015] In one embodiment, when generating different gas mixture components, hydrogen can be added to each hydrogen-free carrier gas mixture component in an amount ranging from, for example, about 0.0% by volume to, for example, about 100.0% by volume. In this way, by changing the ratio of the carrier gas mixture to hydrogen in the gas mixture, multiple different gas mixture components can be generated based on a single carrier gas mixture. For example, this can be achieved by continuously increasing the hydrogen concentration in the gas mixture (while correspondingly decreasing the concentration of the carrier gas mixture), for example, in 1% increments. Of course, smaller increments, such as 0.1%, or larger increments, such as 2%, can also be selected.

[0016] Subsequently, a measured value of the hydrogen concentration (expected value) of the produced gas mixture composition is determined. A measurement error is determined based on the measured value of the hydrogen concentration. For example, it can be done by comparing the determined measured value of the hydrogen concentration with the known (actual) hydrogen concentration when generating the gas mixture composition. In this way, on the one hand, the relationship between the carrier gas mixture composition and the measured value of the hydrogen concentration can be determined, and on the other hand, the (expected) measurement error can also be determined.

[0017] Furthermore, a model (based on the established relationship) is provided, which can map or be capable of mapping the carrier gas mixture composition and the measured value data of the hydrogen concentration to the measurement error. In other words, the model contains the relationship between the carrier gas mixture composition and the measured value of the hydrogen concentration and the (expected) measurement error, thus realizing the above mapping.

[0018] The model can be based on linear regression, decision tree (gradient boosting tree), or neural network. It is preferably to use linear regression to establish the relationship between the carrier gas mixture composition and the measured value of the hydrogen concentration and the measurement error, thereby generating the model.

[0019] The model is also generated based on the data about the gas mixture composition or trained using these data for a gas analysis device operating according to the thermal conductivity measurement principle, and outputs the measured value obtained in the actual measurement and the corresponding measurement error of the provided carrier gas mixture composition related to the measured value.

[0020] It should be noted here that different gas mixture compositions can not only be virtually generated as described above. For example, for process control, gas mixtures can be provided to be generated in parallel in the laboratory, such as by mixing a carrier gas mixture with hydrogen through a mixing device. In this case, the measured value of the hydrogen concentration can be measured by a gas analysis device operating according to the thermal conductivity measurement principle, and the measurement error determined in the measurement can be compared with the measurement error determined by the model.

[0021] In one embodiment, the measured value of the hydrogen concentration can also be provided according to the measurement result.

[0022] Optionally or additionally, in one embodiment, the measured value of the hydrogen concentration can also be calculated.

[0023] If the data includes the characteristic curve of a gas analysis device operating according to the thermal conductivity measurement principle, it is possible to calculate the thermal conductivity of the gas mixture through this characteristic curve and calculate the measured value of the hydrogen concentration based on the (calculated) thermal conductivity.

[0024] There is also disclosed a computing device suitable for performing the above method. For example, the computing device may have a first interface through which data on at least two different hydrogen-free carrier gas mixture components can be received. The computing device can also have a computing unit (such as a processor) and a memory (such as a volatile or non-volatile memory) operably connected to the computing unit. The memory is designed, for example, for storing or temporarily storing data, wherein the computing unit is configured to generate different gas mixture components based on the data and determine hydrogen concentration measurement values for the different gas mixture components, for example by means of characteristic curves that may optionally be present in the data. In addition, the computing unit is further configured to determine a measurement error by means of the hydrogen concentration measurement values, for example by comparing with the actual hydrogen content specified during the generation process. The computing device may also have a second interface for providing the model. Additionally, the computing device may be configured to provide the model through the second interface and store a copy of the model in its memory.

[0025] In one embodiment, it can be proposed that the data includes information on the concentrations of two, three, four, five or more components contained in the carrier gas mixture, preferably including information on the concentration of each carrier gas mixture component.

[0026] In one embodiment, it can be proposed that each component is selected from the group consisting of methane, carbon dioxide, nitrogen, ethane, propane.

[0027] In one embodiment, it can be proposed that at least one hydrogen-free carrier gas mixture is a natural gas mixture, preferably all carrier gas mixtures are natural gas mixtures.

[0028] In one embodiment, the carrier gas mixture can be a synthesis gas mixture, such as a two-component gas mixture (such as a CO2-CH4 mixture).

[0029] In one embodiment, hydrogen concentration measurement values can be determined for each gas mixture component, and a measurement error can be determined based on the hydrogen concentration measurement values and the hydrogen content in the gas mixture components.

[0030] In one embodiment, data on 4, 12, 200 or more different hydrogen-free carrier gas mixtures can be provided. For example, this data can be based on or representative of the AGA8 tables from NIST.

[0031] In one embodiment, a certain proportion of the data, preferably 10% to 20%, especially 15% of the data, can be provided for validating the model.

[0032] This object is also achieved by the method for determining a measurement error according to the invention described at the beginning, which provides data on the composition of the hydrogen-free carrier gas mixture, measures the concentration of hydrogen in the gas mixture using a gas analysis device operating on the principle of thermal conductivity measurement to obtain a measured value, and applies the model generated as described above to the measured value and the data on the composition of the hydrogen-free carrier gas mixture to determine the measurement error (absolute value, in volume percentage) of the measured value.

[0033] It goes without saying that the model can be already created (i.e., before the program is executed) or can be to be created (i.e., during the execution of the program).

[0034] Furthermore, according to the invention, the measurement system mentioned at the beginning can achieve the object of the invention, and the gas analysis device is arranged for,

[0035] - measuring the concentration of hydrogen in the gas mixture of hydrogen and the composition of the hydrogen-free carrier gas mixture according to the principle of thermal conductivity measurement to obtain a measured value, wherein,

[0036] the computing device includes the model generated and arranged for this purpose as described above,

[0037] - obtaining data on the composition of the hydrogen-free carrier gas mixture, and

[0038] - applying the model to the measured value and the data to determine the measurement error (absolute value, in volume percentage) of the measured value.

[0039] In one embodiment, the computing device can be configured to correct the measured value taking into account the measurement error, and preferably provide the corrected measured value.

[0040] In one embodiment, the computing device can be configured to transmit the measurement error to the gas analysis device so that it is automatically taken into account in future measurements.

[0041] In one embodiment, the gas analysis device can be arranged to measure the concentration of at least one component in the hydrogen-free carrier gas mixture and transmit the measured concentration value to the computing device or provide it to the computing device.

[0042] In one embodiment, the gas analysis device can be arranged to measure the concentration of at least two, three, four, five or more components contained in the hydrogen-free carrier gas mixture and transmit the measured concentration values to the computing device or provide them to the computing device.

[0043] In one embodiment, the gas analysis device can include a gas analysis device operating on the principle of heat conduction measurement for measuring the hydrogen concentration, and also include a gas chromatograph device for measuring the concentration of at least one component contained in the hydrogen-free carrier gas mixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Additional features, characteristics, and advantages of the present invention are given from the description of the following drawings. The drawings show:

[0045] Figure 1 showing a computing device,

[0046] Figure 2 showing a flowchart of a computer-implemented method,

[0047] Figure 3 showing a flowchart of a method for determining measurement errors in hydrogen concentration measurements, and

[0048] Figure 4 showing a process control system. DETAILED DESCRIPTION

[0049] In the embodiments and the drawings, elements that are the same or perform the same function may have the same reference numerals accordingly.

[0050] First, refer to Figure 1 and Figure 2 . Figure 1 Shown is a computing device 1 that is suitable for executing a computer-implemented method for generating a model 2, which is illustrated by a flowchart in Figure 2 .

[0051] In Figure 1 the computing device 1 shown may have a first interface 3 through which data 4 regarding at least two different hydrogen-free carrier gas mixture components can be received. The computing device 1 may also include a computing unit 5 (e.g., a processor) and a memory 6 (e.g., a volatile or non-volatile memory) operably connected to the computing unit 5. The memory 6 is designed, for example, to store or temporarily store the data 4, wherein the computing unit 5 is configured to generate different gas mixture components based on the data 4 and determine hydrogen concentration measurement values for the different gas mixture components, for example, by means of characteristic curves that may optionally be present in the data 4. In addition, the computing unit 5 is further configured to calculate a measurement error by comparing the hydrogen concentration measurement values, for example, with the actual hydrogen content specified in the generation. Thus, the model 2 is generated, which can map data regarding the carrier gas mixture components and the hydrogen concentration measurement values on the one hand to the measurement error (corresponding to the hydrogen concentration measurement value) and on the other hand to the (expected) measurement error based on the determined relationship between the carrier gas mixture components and the hydrogen concentration measurement values.

[0052] The computing device 1 may also have a second interface 7 for providing the model 2. Optionally or additionally, the computing device 1 may be configured to provide the model 2 through the second interface 7 and store a copy of the model 2 in its memory 6.

[0053] Figure 2 A computer-implemented method is illustrated by a flow chart. In step S1, data 4 is provided by at least two different hydrogen-free carrier gas mixtures. The data may be in the form of a file, for example, on a storage medium, such as a portable non-volatile storage medium. For example, the data 4 may be provided to a server (not shown) in a network (such as on the Internet, in the cloud, or the like). For this purpose, Figure 1 the computing device 1 in

[0054] In step S2, different gas mixture compositions are generated or produced based on the data 2. Thus, in principle, two quantities can be changed simultaneously or individually. First, the type of the carrier gas mixture can be changed. Second, the hydrogen content in the gas mixture can be changed.

[0055] When generating different gas mixture compositions, hydrogen can be added to each hydrogen-free carrier gas mixture composition, for example, in an amount ranging from about 0.0% by volume to about 100.0% by volume. In this way, by changing the ratio of the carrier gas mixture to hydrogen in the gas mixture, multiple different gas mixture compositions can be generated based on a single carrier gas mixture. For example, it can be achieved by continuously increasing the concentration of hydrogen in the gas mixture, for example, in 1% increments (and correspondingly decreasing the concentration of the carrier gas mixture).

[0056] In step S3, a (predicted) hydrogen concentration measurement value is determined for the generated gas mixture composition. A measurement error is calculated by means of the determined hydrogen concentration measurement value. Preferably, a hydrogen concentration measurement value is determined for each generated gas mixture composition, and the corresponding measurement error is calculated by means of this value. For example, the determined hydrogen concentration measurement value can be compared with the known (actual) hydrogen concentration when generating the gas mixture composition. This results in a model 2 that can map the data 4 regarding the carrier gas mixture composition and the hydrogen concentration measurement value to the measurement error.

[0057] In the next step S4, the model 2 is provided.

[0058] Figure 1 It is shown that the memory 6 includes a computer program 8 having instructions for performing the above method.

[0059] The hydrogen concentration measurement value can be based on measurement. Optionally or additionally, the hydrogen concentration measurement value can also be calculated. For this purpose, the data may include the characteristic curve of a gas analysis device operating according to the principle of thermal conductivity measurement. In this regard, the thermal conductivity of the gas mixture composition can be calculated, and the hydrogen concentration measurement value can be calculated from the (calculated) thermal conductivity by means of the characteristic curve.

[0060] Preferably, the data includes information on the concentrations of two, three, four, five or more components contained in the carrier gas mixture. Preferably, this information applies to each component of the carrier gas mixture. This can improve the robustness of Model 2.

[0061] The components may be selected from the group consisting of: methane, carbon dioxide, nitrogen, ethane, propane.

[0062] In one embodiment, at least one hydrogen-free carrier gas mixture may be provided as a natural gas mixture. Preferably, all carrier gas mixtures are natural gas mixtures.

[0063] For example, the components of various natural gases can be given in the form of Table 1 below:

[0064]

[0065] Thus, five typical components (methane, ethane, propane, carbon dioxide, nitrogen) of typical natural gas, their thermal conductivities, and the thermal conductivities with CH4 as the standard are summarized.

[0066] Table 2 lists four specific examples EG1, EG2, EG3, and EG4 of possible natural gas compositions:

[0067]

[0068] The data used to generate Model 2 may also include more than four natural gas compositions, for example, including 200 or more.

[0069] For example, according to the natural gas compositions EG1 to EG4, hydrogen is gradually added to each of the natural gas compositions EG1 to EG4 in 1% increments, resulting in 404 gas mixture components. It goes without saying that, for example, in order to generate more data points, a 0.1% decrement can also be selected.

[0070] Then, a hydrogen concentration measurement value can be determined for each of the 404 gas mixtures. Then, the measurement error can be determined based on the hydrogen concentration measurement value and the hydrogen content in the gas mixture composition.

[0071] Figure 3 Shows a method flow chart for determining the error in measuring hydrogen concentration in a hydrogen-containing fuel gas mixture.

[0072] In step S01, composition data on the hydrogen-free carrier gas mixture and Model 2 generated as described above are provided.

[0073] In step S02, the concentration of hydrogen in the gas mixture is measured using a gas analysis device operating based on the principle of thermal conductivity measurement to obtain a measurement value.

[0074] In step S03, Model 2 is applied to the measured values and the data on the composition of the hydrogen-free carrier gas mixture to determine the measurement error (absolute value, in volume percentage) of the measured values.

[0075] The method may further include a step S04, in which the determined measurement error is used to recalibrate the gas analysis device.

[0076] Figure 4 A process control system 100 is shown, in which a method for determining the measurement error of the hydrogen concentration in a hydrogen-containing fuel gas mixture can be implemented, for example Figure 3 the method.

[0077] The process control system 100 is used to supply and manipulate a hydrogen-containing fuel gas 102 to a gas turbine 101.

[0078] The fuel gas 102 is prepared in a mixing device 103. A carrier gas 104 (such as natural gas or synthesis gas) and hydrogen 105 are fed into the mixing device 103, so that the mixing device 103 can add the hydrogen 105 to the carrier gas 104, generate a fuel gas mixture 102, and feed it into the turbine 101.

[0079] Arrow 106 indicates the preferred flow direction of the gas.

[0080] In addition, the process control system 100 further includes a gas analysis device, which in this example includes a gas analysis device 107, a computing device 108 assigned to the gas analysis device 107, and a gas chromatograph device 109.

[0081] The gas analysis device 107 has a measurement input 1070, through which the gas to be measured, such as the fuel gas 102, is fed into the gas analysis device 107. The gas analysis device 107 also has a measurement output 1071, which is used to discharge the gas after measurement.

[0082] The gas analysis device 107 also includes a measurement chamber 1072 for this purpose, which operates based on the principle of measuring thermal conductivity. The measurement principle of the measurement chamber 1072 is based on the different thermal conductivities of gases. The heating process of a heated measurement resistor (not shown) surrounded by the gas is determined by the thermal conductivity of the gas.

[0083] In one operating mode, the measuring chamber 1072 can have a sensor (not shown) that is equipped with a micromechanically produced silicon chip, the measuring diaphragm of which can be equipped with thin-film resistors. The resistance in the diaphragm can be adjusted to a constant temperature. For this purpose, an electric current intensity can be used, which assumes a certain value according to the thermal conductivity of the gas to be measured. This "original value" can be processed electronically and used to calculate the gas concentration. The sensor is characterized by a short T90 time. The sensor is preferably installed in a thermostatically controlled stainless-steel housing to suppress the influence of the ambient temperature. In addition, in order to avoid the influence of flow, the sensor preferably uses only indirect energy. For example, this can be achieved by installing the sensor in a hole on the side of the flow channel.

[0084] In one operating mode, the measuring chamber 1072 can provide four measuring resistors connected to a Wheatstone bridge (not shown). Two of these resistors are surrounded by the gas to be measured, and the other two are surrounded by a reference gas. A constant direct current voltage heats the resistors through the temperature of the measuring block 1072. When the thermal conductivities of the gas to be measured and the reference gas are different, the heating degrees of the resistors are also different due to the different converted heating powers. Therefore, a change in the composition of the gas to be measured also causes a change in the resistance value. The electrical balance of the measuring bridge is disturbed, and a voltage is generated on the diagonal of the bridge. This is a measure of the composition concentration, in this case hydrogen gas H2.

[0085] The gas analysis device 107 can have corresponding interfaces for power supply and / or control of the gas analysis device 107. The gas analysis device 107 can have a power connection point 1073 for power supply. In addition to the power connection point 1073, the gas analysis device 107 can also include a bus system, preferably a fieldbus, in particular a CAN bus 1074 (Controller Area Network) and an analog / digital output 1075.

[0086] The computing device 108 assigned to the gas analysis device 107 can also be designed as a supply and control device for the gas analysis device 107 and is connected to the above-mentioned interfaces of the gas analysis device 107 (see Figure 4 ).

[0087] For this, the gas analysis device 107 is used to measure the concentration of hydrogen in the fuel gas 102 to obtain a measurement value.

[0088] The computing device 108 includes the model 2 generated as described above and is used to obtain data 40 on the composition of the carrier gas 104, and to apply the model 2 to the measurement value and the data 40 to determine the measurement error (absolute value, in volume percentage) of the measurement value.

[0089] Data 40 regarding the composition of the carrier gas 104 can be measured for the carrier gas 104 based on the gas chromatograph device 109. To this end, the gas chromatograph device 109 is configured to measure the concentration of at least one component contained in the carrier gas 104. For example, the gas chromatograph device 109 can be used to measure the concentrations of methane, ethane, propane, carbon dioxide, and nitrogen in the carrier gas 104.

[0090] The gas chromatograph device 109 can transmit the measured values to the control device 110 of the process control system 100. The control device 110 is designed to support the management of the processes running in the process control system 100.

[0091] The control device 110 can transmit the data 40 to the computing device 108 or otherwise provide it to the computing device 108.

[0092] The computing device 108 can be further configured to correct the measured values obtained by the gas analysis device 107 taking into account the relevant measurement errors and provide the corrected measured values to the control device 110 so that the control device 110, for example, can display the corrected measured values, etc.

[0093] In addition, the computing device 108 can be configured to adjust the gas analysis device 107 according to the calculated measurement errors so that the gas analysis device 107 automatically takes into account the measurement errors during the next measurement and displays the corrected measured values or transmits them to the computing device 108. For this purpose, the computing device 108 can transmit the calculated measurement errors to the gas analysis device 107 via, for example, the field bus 1074.

[0094] The gas chromatograph device 109 can perform measurements at certain time intervals, for example, at a sampling frequency of 180 seconds.

[0095] Compared with the gas chromatograph device 109, the gas analysis device 107 can perform measurements more frequently. Preferably, it performs measurements at a sampling frequency of 5 seconds.

[0096] Although the present invention has been described and illustrated in detail by way of examples, the present invention is not limited to the disclosed embodiments. Those skilled in the art can modify it without departing from the scope of protection of the present invention defined by the patent claims. In particular, the features related to the systems described in this disclosure can be meaningfully used to further design the methods described in this disclosure, and vice versa.

Claims

1. A computer-implemented method for generating a model (2) for determining a measurement error in a measurement of the concentration of hydrogen (105) contained in a gas mixture, wherein, The gas mixture comprises hydrogen (105) and a hydrogen-free carrier gas mixture, wherein the hydrogen-free carrier gas mixture is a natural gas mixture, wherein - providing data on at least two different hydrogen-free carrier gas mixture components, - generating different gas mixture components based on the data, wherein, in the case of different gas mixture components, the hydrogen-free carrier gas mixture components and / or the hydrogen content are different, - determining a hydrogen concentration measurement value for the gas mixture components and determining a measurement error based on the hydrogen concentration measurement value, - providing a model (2) that maps data on carrier gas mixture components and hydrogen concentration measurement values to a measurement error.

2. The method according to claim 1, wherein, The data includes information on the concentrations of two, three, four, five or more components contained in the carrier gas mixture.

3. The method according to claim 2, wherein, Each component is selected from the group consisting of methane, carbon dioxide, nitrogen, ethane, propane.

4. The method according to any one of claims 1 to 3, wherein The gas mixture comprises hydrogen (105) and two or more hydrogen-free natural gas mixtures.

5. The method according to any one of claims 1 to 3, wherein When generating different gas mixture components, 0.0% to 100.0% by volume of hydrogen (105) is added to each hydrogen-free carrier gas mixture component.

6. The method according to any one of claims 1 to 3, wherein A hydrogen concentration measurement value is determined for each gas mixture component, and a measurement error is determined based on the hydrogen concentration measurement value and the hydrogen content in the gas mixture component.

7. The method according to any one of claims 1 to 3, wherein The data on 4, 12, 200 or more different hydrogen-free carrier gas mixture components is provided.

8. The method according to any one of claims 1 to 3, wherein, The hydrogen concentration measurement value is based on a measurement.

9. The method according to any one of claims 1 to 3, wherein The hydrogen concentration measurement value is calculated.

10. The method according to claim 9, wherein, The data includes a characteristic curve of a gas analysis device operating according to the principle of thermal conductivity measurement, wherein the thermal conductivity of the gas mixture component is calculated and the hydrogen concentration measurement value is calculated from the thermal conductivity based on the characteristic curve.

11. A computer-readable data carrier comprising instructions which, when a computer executes a computer program, cause the computer to implement the method according to any one of claims 1 to 10.

12. A method for determining a measurement error in a measurement of the concentration of hydrogen (105) contained in a gas mixture, wherein, The gas mixture comprises hydrogen (105) and a hydrogen-free carrier gas mixture, wherein the hydrogen-free carrier gas mixture is a natural gas mixture, wherein - providing data on the components of the hydrogen-free carrier gas mixture; - in order to obtain a measurement value, measuring the concentration of hydrogen (105) in the gas mixture using a gas analysis device operating according to the principle of thermal conductivity measurement, - in order to determine the measurement error of the measurement value, applying the model (2) generated by the method according to any one of claims 1 to 10 to the measurement value and the data on the components of the hydrogen-free carrier gas mixture.

13. A measuring system, comprising a gas analysis device and a computing device (108) assigned to the gas analysis device, wherein, The gas analysis device is arranged for - in order to obtain a measurement value, measuring the concentration of hydrogen (105) in a gas mixture comprising hydrogen (105) and a hydrogen-free carrier gas mixture according to the principle of thermal conductivity measurement, wherein the hydrogen-free carrier gas mixture is a natural gas mixture, wherein The computing device (108) comprises a model (2) generated by the method according to any one of claims 1 to 10, and the computing device (108) is arranged for - Obtain data on the composition of the hydrogen-free carrier gas mixture, and - In order to determine the measurement error of the measurement value, apply the model (2) to the measurement value and the data.

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