Gas detector inspection method and gas detector inspection apparatus

Abstract

To provide a gas detector inspection method capable of accurately inspecting a gas detector even in the event that the density of a gas for inspection varies.SOLUTION: A gas detector inspection method of inspecting whether an input of a gas detector falls within a predetermined range includes a step of accepting an input of density information on a gas component that is part of components of a gas for inspection supplied to a gas detector, a step of determining a predetermined range on the basis of the inputted density information on the gas component, and a step of displaying on a display unit the determined predetermined range.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a method for inspecting a gas detector and a device for inspecting a gas detector, and more particularly to a method for inspecting a gas detector by an inspection gas and a device for inspecting a gas detector.

Background Art

[0002] Conventionally, a method for inspecting a gas detector by an inspection gas is known (see, for example, Patent Document 1).

[0003] Patent Document 1 discloses a gas detector inspection processing system for inspecting a gas detector by an inspection gas. The gas detector inspection processing system includes a system main body that houses the gas detector. The system main body is configured to confirm whether the gas alarm function of the gas detector operates normally by supplying the inspection gas to the gas detector.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the gas detector inspection processing system described in Patent Document 1, it is difficult to accurately inspect the gas detector when there are variations in the concentration of the inspection gas. Therefore, it is desired to enable accurate inspection of the gas detector even when there are variations in the concentration of the inspection gas.

[0006] The present invention has been made to solve the above problems, and one object of the present invention is to provide a method for inspecting a gas detector and a device for inspecting a gas detector capable of accurately inspecting the gas detector even when there are variations in the concentration of the inspection gas.

Means for Solving the Problems

[0007] In order to achieve the above object, a method for inspecting a gas detector according to a first aspect of the present invention is a method for inspecting a gas detector for checking whether an output of the gas detector is within a predetermined range, the method including: receiving an input of concentration information of some of the gas components among the components of the inspection gas supplied to the gas detector; and determining a predetermined range based on the input concentration information of the gas components.

[0008] In the method for inspecting a gas detector according to the first aspect of the present invention, as described above, a step of receiving an input of concentration information of some of the gas components among the components of the inspection gas supplied to the gas detector and a step of determining a predetermined range based on the input concentration information of the gas components are provided. Thereby, a predetermined range serving as a reference for inspection can be determined based on the concentration information of some of the gas components among the components of the inspection gas, so that a correct predetermined range can be determined even when there are variations in the concentration of the inspection gas. As a result, even when there are variations in the concentration of the inspection gas, the gas detector can be accurately inspected.

[0009] In the method for inspecting a gas detector according to the first aspect, preferably, the step of determining a predetermined range includes estimating the concentration of the inspection gas based on the input concentration information of the gas components and determining a predetermined range based on the estimated concentration of the inspection gas. With this configuration, a predetermined range based on the concentration of the inspection gas can be determined, so that when the output of the gas detector is an output based on the concentration of the inspection gas, a predetermined range serving as a reference for inspection can be appropriately determined.

[0010] In this case, preferably, the step of determining a predetermined range includes the step of estimating the concentration of the inspection gas from the concentration information of the input gas component by using a conversion coefficient for converting the concentration information of the gas component into the concentration of the inspection gas, and determining a predetermined range based on the estimated concentration of the inspection gas. With such a configuration, the concentration of the inspection gas can be estimated by a simple process of simply converting the concentration information of the gas component by using the conversion coefficient for converting the concentration information of the gas component into the concentration of the inspection gas. Therefore, a predetermined range based on the concentration of the inspection gas can be determined by a simple process.

[0011] In the method for inspecting a gas detector according to the first aspect, preferably, the step of receiving the input of the concentration information of the gas component includes the step of receiving the input of the concentration information of the gas component with the highest concentration among the components of the inspection gas so that a preset value can be rewritten. With such a configuration, when the concentration information of the gas component cannot be obtained, the preset value can be used as the concentration information of the gas component. As a result, even when the concentration information of the gas component cannot be obtained, a simple predetermined range can be determined and a simple inspection of the gas detector can be performed. Further, when the concentration information of the gas component can be obtained, the preset value can be rewritten to the concentration information of the gas component and input. As a result, when the concentration information of the gas component can be obtained, an accurate predetermined range can be determined and an accurate inspection of the gas detector can be performed.

[0012] In the method for inspecting a gas detector according to the first aspect, preferably, the step of receiving the input of the concentration information of the gas component includes the step of receiving the input of the concentration information of the gas component with the highest concentration among the components of the inspection gas. With such a configuration, a predetermined range can be determined based on the concentration information of the gas component with the highest concentration, which is a representative component among the components of the inspection gas. Therefore, a predetermined range can be accurately determined.

[0013] In order to achieve the above object, a gas detector inspection device according to a second aspect of the present invention is a gas detector inspection device for inspecting whether the output of a gas detector is within a predetermined range, and includes an input reception unit that receives input of concentration information of some of the gas components among the components of the inspection gas supplied to the gas detector, and a control unit that determines a predetermined range based on the input concentration information of the gas components.

[0014] In the gas detector inspection device according to the second aspect of the present invention, as described above, an input reception unit that receives input of concentration information of some of the gas components among the components of the inspection gas supplied to the gas detector, and a control unit that determines a predetermined range based on the input concentration information of the gas components are provided. Thereby, similar to the gas detector inspection method according to the first aspect, it is possible to provide a gas detector inspection device capable of accurately inspecting a gas detector even when there are variations in the concentration of the inspection gas.

Advantages of the Invention

[0015] According to the present invention, as described above, even when there are variations in the concentration of the inspection gas, it is possible to accurately inspect the gas detector.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0017] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0018] With reference to FIGS. 1 to 4, the configuration of an inspection system 200 including an inspection device 100 for a gas detector 202 according to an embodiment will be described.

[0019] (Configuration of the inspection system) The inspection system 200 shown in FIG. 1 includes a gas source 201, a gas detector 202, and an inspection device 100. The inspection system 200 is an inspection system for the gas detector 202 that inspects whether the output of the gas detector 202 is within a predetermined range R (see FIG. 3) by using the inspection gas G supplied from the gas source 201 by the inspection device 100. In the present embodiment, the inspection gas G is city gas 13A. City gas 13A is a mixed gas of a plurality of types of gas components such as methane, ethane, propane, and butane. Further, city gas 13A contains each gas component so as to contain methane as the gas component with the maximum concentration.

[0020] As shown in FIGS. 1 and 2, the gas source 201 is configured to supply the inspection gas G to the gas detector 202 via the inspection device 100. The gas source 201 is connected to the inspection device 100 via a gas pipe 201a so as to be able to supply the inspection gas G. The gas source 201 is a gas cylinder. The inspection gas G is enclosed in the gas source 201 with air as a balance gas. Further, the concentration of the inspection gas G enclosed in the gas source 201 may vary due to manufacturing errors allowed by the manufacturer of the gas cylinder during manufacturing.

[0021] The gas detector 202 is configured to detect the city gas 13A and output an output corresponding to the detected city gas 13A. Specifically, the gas detector 202 includes a gas detection unit 202a and a control unit 202b. The gas detection unit 202a is configured to detect the city gas 13A and output an output signal corresponding to the concentration of the detected city gas 13A. The gas detection unit 202a has, for example, a catalytic combustion type gas detection element as a detection element capable of detecting the city gas 13A. The control unit 202b is configured to obtain an indication value representing the concentration of the city gas 13A based on the output signal output by the gas detection unit 202a and output the obtained indication value. Specifically, the control unit 202b outputs the lower explosive limit concentration (%LEL: % Lower Explosive Limit) of the city gas 13A as the indication value. The control unit 202b is constituted by a processor and is configured to perform the overall control process of the gas detector 202 by executing a program.

[0022] Further, the gas detector 202 is connected to the inspection device 100 via a gas pipe 202c so that the inspection gas G can be supplied from the gas source 201 during the inspection by the inspection device 100.

[0023] The inspection device 100 is configured to inspect whether the output of the gas detector 202 is within a predetermined range R (see FIG. 3). Specifically, the inspection device 100 includes an input reception unit 11, a control unit 12, a display unit 13, and a storage unit 14. The input reception unit 11 is configured to receive various input operations such as a numerical input operation by the user. The input reception unit 11 is a keyboard. The control unit 12 is constituted by a processor and is configured to perform the overall control process of the inspection device 100 by executing a program.

[0024] When inspecting the gas detector 202, the control unit 12 is configured to control the supply of the inspection gas G from the gas source 201 to the gas detector 202 via the gas pipe 15 in the inspection device 100 connected to the gas pipe 201a and the gas pipe 202c. And the control unit 12 is configured to obtain the output of the gas detector 202 by the inspection gas G from the gas detector 202 through communication such as infrared communication. Specifically, the control unit 12 is configured to obtain the indicated value of the inspection gas G obtained based on the output signal of the gas detection unit 202a by the inspection gas G from the control unit 202b. And the control unit 12 is configured to control to inspect whether the obtained output (indicated value) of the gas detector 202 is within a predetermined range R. And the control unit 12 is configured to control to display the inspection result of the gas detector 202 on the display unit 13. Specifically, when the output of the gas detector 202 is within the predetermined range R, the control unit 12 controls to display on the display unit 13 that the output of the gas detector 202 is normal, and when the output of the gas detector 202 is outside the predetermined range R, the control unit 12 controls to display on the display unit 13 that the output of the gas detector 202 is abnormal.

[0025] The display unit 13 is configured to display various kinds of information such as a setting screen 16 described later. The display unit 13 is constituted by, for example, a liquid crystal display device. Also, the display unit 13 is a display operation unit having a touch panel function. The storage unit 14 is configured to store various kinds of information such as a conversion coefficient C described later. The storage unit 14 is constituted by a non-volatile storage device such as a flash memory.

[0026] Here, in the present embodiment, as shown in FIGS. 3 and 4, the inspection device 100 is configured to be able to determine a predetermined range R representing the acceptable range of the output of the gas detector 202 before inspecting the gas detector 202. Specifically, the inspection device 100 receives, by the input reception unit 11, the input of the concentration information A of some of the gas components (methane) among the components of the inspection gas G (methane, ethane, propane, and butane) supplied to the gas detector 202, and is configured to determine the predetermined range R by the control unit 12 based on the input concentration information A of the gas components. Also, in the present embodiment, the inspection device 100 is configured to receive, by the input reception unit 11, the input of the concentration information A of the gas component (methane) with the maximum concentration among the components of the inspection gas G. Note that the concentration information of each gas component of the inspection gas G is described, for example, on the gas source 201 (gas cylinder). The user inputs the concentration information of the gas component (methane) to be input among the concentration information of each gas component of the inspection gas G described on the gas source 201 or the like.

[0027] Also, in the present embodiment, the control unit 12 is configured to estimate the concentration B of the inspection gas G based on the input concentration information A of the gas components, and to determine the predetermined range R based on the estimated concentration of the inspection gas G. At this time, the control unit 12 estimates the concentration B of the inspection gas G from the input concentration information A of the gas components by a conversion coefficient C for converting the concentration information A of the gas components into the concentration B of the inspection gas G, and is configured to determine the predetermined range R based on the estimated concentration B of the inspection gas G. Also, the control unit 12 is configured to determine the lower limit and the upper limit of the predetermined range R by subtracting and adding a predetermined value D to the estimated concentration B of the inspection gas G.

[0028] Referring to FIG. 4, an example of determining a predetermined range R will be described. Here, it is assumed that 0.88 vol% is input as the concentration information A of the gas component. In this case, first, the control unit 12 performs unit conversion by multiplying 0.88 vol% of the concentration information A by the unit conversion coefficient E of 10000 ppm / vol%, and obtains 8800 ppm of the concentration information A after unit conversion. Then, the control unit 12 estimates 20% LEL of the concentration B by multiplying 8800 ppm of the concentration information A after unit conversion by 20 / 8800 of the conversion coefficient C. Note that 20 / 8800 of the conversion coefficient C is a proportional coefficient representing the relationship between the concentration of methane gas and the concentration of the inspection gas G. There is a linear proportional relationship between the concentration of methane gas and the concentration of the inspection gas G. The conversion coefficient C is obtained in advance by experiments or the like and stored in the storage unit 14.

[0029] Also, when the finally obtained concentration B is a value rounded to the decimal point, the control unit 12 adds 0.5 to the value obtained by multiplying the concentration information A by the conversion coefficient C, and truncates the decimal part to obtain the concentration B. Thereby, the control unit 12 can obtain the concentration B as a value rounded to the decimal point. Then, the control unit 12 subtracts 4 of the predetermined value D from 20% LEL of the concentration B to determine 16% LEL of the lower limit of the predetermined range R, and adds 4 of the predetermined value D to 20% LEL of the concentration B to determine 24% LEL of the upper limit of the predetermined range R. Note that the predetermined value D is determined in advance by experiments or the like and stored in the storage unit 14. Then, the control unit 12 determines the range of 16% LEL or more and 24% LEL or less as the predetermined range R. By determining the predetermined range R in this way, it is possible to change the predetermined range R according to the variation of the concentration information A of the gas component (methane) caused by the variation of the concentration of the inspection gas G.

[0030] Further, as shown in FIG. 3, the control unit 12 is configured to perform control to display a setting screen 16 for inputting the concentration information A of the gas component on the display unit 13. The setting screen 16 has a concentration information input field 16a, a range display area 16b, a setting change button 16c, and a return button 16d. The concentration information input field 16a is a field where the concentration information A of the gas component is input. The user performs an input operation of the concentration information A of the gas component on the concentration information input field 16a by the input reception unit 11 in a state where the concentration information input field 16a on the display unit 13 is touched and selected. The inspection device 100 is configured to receive the input of the concentration information A of the gas component to the concentration information input field 16a by the input reception unit 11. Further, a preset value is displayed in the concentration information input field 16a before the user inputs the concentration information A of the gas component into the concentration information input field 16a. Therefore, in the present embodiment, the inspection device 100 is configured to receive the input of the concentration information A of the gas component so that the preset value can be rewritten by the input reception unit 11. Note that the initial value of the concentration information A of the gas component is displayed in the concentration information input field 16a as the preset value. As the initial value, the approximate median value (approximate average value) of the concentration of the gas component (methane) to be input in the variation of the concentration of the inspection gas G is adopted. That is, when there is no manufacturing error allowed at the time of manufacture by the manufacturer of the gas source 201 (gas cylinder), the concentration of the gas component (methane) to be input in the inspection gas G is adopted as the initial value.

[0031] A predetermined range R determined based on the concentration information A of the gas component is displayed in the range display area 16b. The user can confirm the predetermined range R displayed in the range display area 16b after inputting the concentration information A of the gas component.

[0032] The setting change button 16c is a display button for making a setting change within a predetermined range R. By touching and selecting the setting change button 16c on the display unit 13, the user makes a setting change such that the determined predetermined range R becomes the predetermined range R during the inspection of the gas detector 202. In this setting change, the determined predetermined range R is not directly stored in the storage unit 14 as the predetermined range R during the inspection of the gas detector 202. Instead, the concentration information A of the gas component after unit conversion (8800 ppm in FIG. 4) is stored in the storage unit 14 as information for calculating the determined predetermined range R. Then, during the inspection of the gas detector 202, based on the concentration information A of the gas component after unit conversion stored in the storage unit 14, the control unit 12 calculates the predetermined range R. This enables easy reflection of the calculation of the predetermined range R, for example, when the conversion coefficient C changes.

[0033] The return button 16d is a display button for changing the screen from the setting screen 16 to another screen. When the user has completed the setting change of the predetermined range R, by touching and selecting the return button 16d on the display unit 13, the user changes the screen from the setting screen 16 to another screen.

[0034] (Control Process for Determining a Predetermined Range) Next, with reference to FIG. 5, the control process for determining the predetermined range R by the inspection device 100 of the present embodiment will be described based on a flowchart.

[0035] As shown in FIG. 5, first, in step S101, the input reception unit 11 receives the input of the concentration information A of a part of the gas components (methane) among the components of the inspection gas G (methane, ethane, propane, and butane) supplied to the gas detector 202. Specifically, in step S101, the input reception unit 11 receives the input of the concentration information A of the gas component with the maximum concentration (methane) among the components of the inspection gas G. Also, in step S101, the input reception unit 11 receives the input of the concentration information A of the gas component so that a preset value (initial value) can be rewritten. Alternatively, in step S101, the input reception unit 11 receives the input of the concentration information A of the gas component as a preset value (initial value).

[0036] Then, in step S102, based on the input concentration information A of the gas component, the control unit 12 determines a predetermined range R. Specifically, in step S102, based on the input concentration information A of the gas component, the control unit 12 estimates the concentration B of the inspection gas G, and based on the estimated concentration B of the inspection gas G, a predetermined range R is determined. More specifically, in step S102, the control unit 12 estimates the concentration B of the inspection gas G from the input concentration information A of the gas component by a conversion coefficient C for converting the concentration information A of the gas component into the concentration B of the inspection gas G. Also, in step S102, the control unit 12 subtracts and adds a predetermined value D to the estimated concentration B of the inspection gas G to determine the lower and upper limits of the predetermined range R. As a result, in step S102, the control unit 12 determines a predetermined range R.

[0037] Then, in step S103, the control unit 12 displays the determined predetermined range R on the display unit 13. Then, when the setting change button 16c on the setting screen 16 is operated, a setting change is made according to the determined predetermined range R, and the control process ends.

[0038] (Effect of this Embodiment) In this embodiment, the following effects can be obtained.

[0039] In this embodiment, as described above, the inspection method of the gas detector 202 is an inspection method of the gas detector 202 for inspecting whether the output of the gas detector 202 is within a predetermined range R, and includes a step of receiving an input of concentration information A of some of the gas components among the components of the inspection gas G supplied to the gas detector 202, and a step of determining the predetermined range R based on the input concentration information A of the gas components.

[0040] Also, the inspection device 100 of the gas detector 202 is an inspection device 100 of the gas detector 202 for inspecting whether the output of the gas detector 202 is within a predetermined range R, and includes an input reception unit 11 that receives an input of concentration information A of some of the gas components among the components of the inspection gas G supplied to the gas detector 202, and a control unit 12 that determines the predetermined range R based on the input concentration information A of the gas components.

[0041] With the above configuration, since the predetermined range R serving as the inspection standard can be determined based on the concentration information A of some of the gas components among the components of the inspection gas G, even when there is a variation in the concentration B of the inspection gas G, the accurate predetermined range R can be determined. As a result, even when there is a variation in the concentration B of the inspection gas G, an accurate inspection of the gas detector 202 can be performed.

[0042] Also, in this embodiment, as described above, the step of determining the predetermined range R includes a step of estimating the concentration B of the inspection gas G based on the input concentration information A of the gas components, and determining the predetermined range R based on the estimated concentration B of the inspection gas G. Thereby, since the predetermined range R based on the concentration B of the inspection gas G can be determined, when the output of the gas detector 202 is an output based on the concentration B of the inspection gas G, the predetermined range R serving as the inspection standard can be appropriately determined.

[0043] Also, in the present embodiment, as described above, the step of determining the predetermined range R includes the step of estimating the concentration B of the inspection gas G from the concentration information A of the input gas component by means of a conversion coefficient C for converting the concentration information A of the gas component into the concentration B of the inspection gas G, and determining the predetermined range R based on the estimated concentration B of the inspection gas G. Thereby, the concentration B of the inspection gas G can be estimated by a simple process of simply converting the concentration information A of the gas component by the conversion coefficient C for converting the concentration information A of the gas component into the concentration B of the inspection gas G. Therefore, the predetermined range R based on the concentration B of the inspection gas G can be determined by a simple process.

[0044] Also, in the present embodiment, as described above, the step of receiving the input of the concentration information A of the gas component includes the step of receiving the input of the concentration information A of the gas component so that a preset value can be rewritten. Thereby, when the concentration information A of the gas component cannot be obtained, a preset value can be used as the concentration information A of the gas component. As a result, even when the concentration information A of the gas component cannot be obtained, a simple predetermined range R can be determined and the inspection of the simple gas detector 202 can be performed. Also, when the concentration information A of the gas component is obtained, the preset value can be rewritten to the concentration information A of the gas component and input. As a result, when the concentration information A of the gas component is obtained, an accurate predetermined range R can be determined and the inspection of the accurate gas detector 202 can be performed.

[0045] Also, in the present embodiment, as described above, the step of receiving the input of the concentration information A of the gas component includes the step of receiving the input of the concentration information A of the gas component having the maximum concentration among the components of the inspection gas G. Thereby, the predetermined range R can be determined based on the concentration information A of the gas component having the maximum concentration, which is a representative component among the components of the inspection gas G. Therefore, the predetermined range R can be accurately determined.

[0046] [Modification Example] It should be noted that the embodiments disclosed this time should be considered as illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of claims rather than the description of the above embodiments, and further includes all changes (modifications) within the meaning and scope equivalent to the scope of claims.

[0047] For example, in the above embodiment, an example of checking whether the indicated value (output) of the gas detector is within a predetermined range is shown, but the present invention is not limited to this. It may also be possible to check whether an output other than the indicated value of the gas detector (such as the value of the output signal of the gas detection unit (sensor value), the value obtained by correcting the output signal of the gas detection unit (corrected sensor value), etc.) is within a predetermined range.

[0048] Also, in the above embodiment, an example where the inspection gas is city gas 13A is shown, but the present invention is not limited to this. The inspection gas may be a mixed gas containing a plurality of types of gas components other than city gas 13A.

[0049] Also, in the above embodiment, an example of receiving the input of the concentration information of one type of gas component with the maximum concentration among the components of the inspection gas is shown, but the present invention is not limited to this. If a predetermined range can be appropriately determined, the input of the concentration information of gas components other than the maximum concentration (such as ethane, propane, and butane, etc.) among the components of the inspection gas may be received. Also, within a range that does not cover all components of the inspection gas, the input of the concentration information of a plurality of types of gas components may be received.

[0050] Also, in the above embodiment, an example where one conversion coefficient is stored in the storage unit is shown, but the present invention is not limited to this. Since the conversion coefficient varies depending on the manufacturer of the gas source (gas cylinder), a database of conversion coefficients may be stored in the storage unit so as to be able to correspond to gas sources (gas cylinders) of multiple manufacturers. Then, an appropriate conversion coefficient may be selected from the database of conversion coefficients according to the manufacturer of the gas source (gas cylinder). Also, it may be configured such that data can be added to or rewritten in the database of conversion coefficients.

[0051] In addition, in the above-described embodiment, an example was shown in which the lower limit and the upper limit of a predetermined range are determined by subtracting and adding a predetermined value to the concentration of the inspection gas. However, the present invention is not limited to this. If the predetermined range can be appropriately determined, the predetermined range may be determined only by subtracting a predetermined value from the concentration of the inspection gas, or only by adding a predetermined value. Further, in the above-described embodiment, an example was shown in which the predetermined value to be subtracted and the predetermined value to be added are the same value. However, the predetermined value to be subtracted and the predetermined value to be added may be different values.

[0052] In addition, in the above-described embodiment, an example was shown in which the concentration information of the input gas component is unit-converted. However, the present invention is not limited to this. It is not necessary to unit-convert the concentration information of the input gas component.

[0053] In addition, in the above-described embodiment, an example was shown in which an initial value is set as a preset value. However, the present invention is not limited to this. As the preset value, an input value at the time of the previous use other than the initial value may be set. Further, the initial value or the input value at the time of the previous use may not be set.

[0054] In addition, in the above-described embodiment, an example was shown in which the concentration information of the gas component is stored in the storage unit, and at the time of inspecting the gas detector, a predetermined range is calculated based on the concentration information of the gas component stored in the storage unit. However, the present invention is not limited to this. The predetermined range may be stored in the storage unit, and at the time of inspecting the gas detector, the predetermined range stored in the storage unit may be read out.

[0055] In addition, in the above embodiment, an example in which a keyboard is provided as the input reception unit of the inspection device has been shown, but the present invention is not limited to this. As long as it is possible to receive the input of the concentration information of the gas component, other than a keyboard may be provided as the input reception unit of the inspection device. For example, information for receiving the input of the concentration information of the gas component may be displayed on the display operation unit, and the display operation unit may function as the input reception unit of the inspection device. Further, for example, the inspection device may be provided with a communication unit that communicates with an external device such as a tablet terminal, and is configured to receive the input of the concentration information of the gas component by receiving the concentration information of the gas component input by the external device through the communication unit. In this case, the communication unit is the input reception unit of the inspection device.

Explanation of Signs

[0056] 11 Input reception unit 12 Control unit 100 Inspection device 202 Gas detector A Concentration information of gas component B Concentration of inspection gas C Conversion coefficient G Inspection gas R Predetermined range

Claims

1. A method for inspecting a gas detector to check whether the output of the gas detector is within a predetermined range, comprising: receiving input of concentration information of some of the gas components among the components of the inspection gas supplied to the gas detector; determining the predetermined range based on the input concentration information of the gas components. A method for inspecting a gas detector.

2. The step of determining the predetermined range includes estimating the concentration of the inspection gas based on the input concentration information of the gas components, and determining the predetermined range based on the estimated concentration of the inspection gas. The method for inspecting a gas detector according to Claim 1.

3. The step of determining the predetermined range includes estimating the concentration of the inspection gas from the input concentration information of the gas components by a conversion coefficient for converting the concentration information of the gas components into the concentration of the inspection gas, and determining the predetermined range based on the estimated concentration of the inspection gas. The method for inspecting a gas detector according to Claim 2.

4. The step of receiving input of the concentration information of the gas components includes receiving input of the concentration information of the gas components so that a preset value can be rewritten. The method for inspecting a gas detector according to any one of Claims 1 to 3.

5. The step of receiving input of the concentration information of the gas components includes receiving input of the concentration information of the gas component with the maximum concentration among the components of the inspection gas. The method for inspecting a gas detector according to any one of Claims 1 to 4.

6. An inspection device for a gas detector to check whether the output of the gas detector is within a predetermined range, comprising: an input reception unit that receives input of concentration information of some of the gas components among the components of the inspection gas supplied to the gas detector; a control unit that determines the predetermined range based on the input concentration information of the gas components. An inspection device for a gas detector.

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