Gas analyzer
The gas analyzer addresses ease, speed, and safety issues in calibration and diagnosis through adjustable gas containment and reflective switching units, enhancing operational efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- YOKOGAWA ELECTRIC CORP
- Filing Date
- 2023-03-07
- Publication Date
- 2026-05-15
AI Technical Summary
Existing gas analyzers lack ease, speed, and safety in calibration and diagnosis processes.
A gas analyzer with a light-emitting unit, analysis unit, and a reflective unit, featuring a light-transmitting section with adjustable gas containment and switching units that allow for switching between reflective and non-reflective states, enabling easy calibration and measurement by positioning adjustment gas containment units and reflective units within the light path.
The configuration enhances ease, speed, and safety of calibration and diagnosis by allowing seamless switching between adjustment states, improving accuracy and reducing foreign matter intrusion.
Smart Images
Figure 0007859356000001 
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Figure 0007859356000003
Abstract
Description
Technical Field
[0001] The present disclosure relates to a gas analyzer.
Background Art
[0002] There is known a reflection-type gas analyzer including a light-emitting unit that emits light, an analysis unit that analyzes physical properties of a gas to be measured based on the intensity of the light that has exited the light-emitting unit and passed through the gas to be measured, a reflection unit that reflects the light that has exited the light-emitting unit and passed through the gas to be measured toward the analysis unit, and an adjustment unit that has an adjustment gas storage unit for calibration (see, for example, Patent Document 1).
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] The gas analyzer as described above is preferably excellent in ease, speed, safety, etc. of adjustment such as calibration and diagnosis.
[0005] Therefore, an object of the present disclosure is to provide a gas analyzer excellent in ease, speed, safety, etc. of adjustment.
Means for Solving the Problems
[0006] One aspect of the present disclosure is as follows.
[0007] [1] A light-emitting unit that emits light, an analysis unit that analyzes physical properties of the gas to be measured based on the intensity of the light that has exited the light-emitting unit and passed through the gas to be measured, a reflection unit that reflects the light that has exited the light-emitting unit and passed through the gas to be measured toward the analysis unit, It has a light-transmitting section, an adjustment section having at least one adjustment gas containment section and a switching section, A reflective gas analyzer in which the light-emitting unit and the analysis unit are arranged on one side with respect to the gas to be measured, The adjustment gas containment section is positioned in the light-transmitting section and contains the adjustment gas, allowing the light that has exited the light-emitting section to pass through the adjustment gas and enter the analysis section. The switching unit is capable of switching between a first state in which a predetermined adjustment gas containment unit is arranged in the light-transmitting unit and a second state in which the adjustment gas containment unit is not arranged in the light-transmitting unit. The adjustment unit includes an adjustment reflective unit that reflects the light, and a reflection switching unit that can switch between a reflective state in which the adjustment reflective unit is positioned in the light-transmitting unit and a non-reflective state in which the adjustment reflective unit is not positioned in the light-transmitting unit. In the reflection state, the adjustment reflective section reflects the light that has left the light-emitting section in the first state and passed through the predetermined adjustment gas containment section before it enters the gas to be measured, and allows it to pass through the predetermined adjustment gas containment section into the analysis section. In the non-reflective state, the adjusting reflective section allows the light emitted from the light-emitting section in the second state to be reflected by the reflective section and enter the analysis section, in a gas analyzer.
[0008] [2] The aforementioned reflective switching unit has a reflective operating unit that can operate relative to the light transmitting unit together with the adjusting reflective unit, The gas analyzer according to [1], wherein the reflection switching unit is configured such that the adjustment reflection unit can be positioned in the light transmission unit by the reflection operating unit.
[0009] [3] The gas analyzer according to [2], wherein the operation of the reflection mechanism is rotation.
[0010] [4] The aforementioned reflective operating unit has a first reflective gear section, The aforementioned reflective switching unit has a reflective rotation operating unit having a reflective second gear portion that meshes with the reflective first gear portion, The aforementioned reflective operating unit is rotated by the rotation of the aforementioned reflective rotating operating unit. The gas analyzer according to [3], wherein the adjustment unit has a reflective cover that exposes a part of the reflective rotation operation unit and covers the reflective operation unit whole or partially.
[0011] [5] The gas analyzer according to [4], having a reflection drive unit that rotates the reflection rotation operation unit.
[0012] [6] The gas analyzer described in [2], wherein the operation of the reflection mechanism is a slide.
[0013] [7] The adjustment unit comprises a first layer having the adjustment gas containment unit and the switching unit, a second layer having the adjustment reflective unit and the reflective switching unit, and a light-transmitting unit spanning the first layer and the second layer, according to any one of items [1] to [6].
[0014] [8] The gas analyzer according to any one of [1] to [7], wherein the switching unit is capable of switching between the first state, the second state, and a third state in which the adjustment gas storage units other than the predetermined adjustment gas storage unit are arranged in the light transmission unit.
[0015] [9] The adjustment unit has a plurality of adjustment gas storage units that contain adjustment gases having different concentrations or components from each other. The gas analyzer according to any one of [1] to [8], wherein the switching unit is capable of selectively arranging each of the plurality of adjustment gas containment units in the light-transmitting unit.
[0016]
[10] The plurality of adjustment gas storage units include: the adjustment gas storage unit that stores a span calibration gas for a predetermined gas component as the adjustment gas; and the adjustment gas storage unit that stores a zero-point calibration gas for the predetermined gas component as the adjustment gas, in the gas analyzer according to [9].
[0017]
[11] The plurality of adjustment gas storage units include: the adjustment gas storage unit that stores a span calibration gas for a predetermined gas component as the adjustment gas; the adjustment gas storage unit that stores a zero-point calibration gas for the predetermined gas component as the adjustment gas; and the adjustment gas storage unit that stores a linearity inspection / confirmation gas for the predetermined gas component as the adjustment gas, in the gas analyzer according to [9].
[0018]
[12] The gas analyzer according to any one of [1] to
[11] , having the adjustment gas storage unit that stores a light wavelength diagnostic gas component serving as a reference for the wavelength of the light as the adjustment gas.
[0019]
[13] The switching unit has at least one operating unit capable of operating on the light transmission unit together with at least one of the adjustment gas storage units. The gas analyzer according to any one of [1] to
[12] , wherein the switching unit can switch between the first state and the second state by the operation of the at least one operating unit.
[0020]
[14] The switching unit has at least one operating unit capable of operating on the light transmission unit together with at least one of the adjustment gas storage units. The gas analyzer according to [8], wherein the switching unit can switch between the first state, the second state, and the third state by the operation of the at least one operating unit.
[0021]
[15] The switching unit has at least one operating unit that can operate on the light-transmitting unit, accompanied by at least one of the adjustment gas containment units. The gas analyzer according to any one of [9] to
[11] , wherein the switching unit is capable of selectively positioning each of the plurality of adjustment gas containment units in the light transmittance unit by the operation of the at least one operating unit.
[0022]
[16] The operation of the operating part is rotation, as described in any one of
[13] to
[15] , a gas analyzer.
[0023]
[17] The aforementioned operating part has a first gear section, The switching unit has a rotating operating unit having a second gear portion that meshes with the first gear portion, The operating unit is rotated by the rotation of the rotating operation unit. The gas analyzer according to
[16] , wherein the adjustment unit has a cover that exposes a part of the rotary operation unit and covers the entire or partially operating unit.
[0024]
[18] The gas analyzer according to
[17] , having a drive unit that rotates the aforementioned rotating operation unit.
[0025]
[19] The operation of the operating part is a slide, as described in any one of items
[13] to
[15] .
[0026]
[20] Multiple of the aforementioned adjustment gas containment units are arranged in a row in the operating unit, The operation of the operating unit is performed such that the plurality of adjustment gas storage units move in a direction in which the plurality of adjustment gas storage units are aligned, as described in any one of
[13] to
[19] .
[0027] [twenty one] The gas analyzer according to
[19] , wherein multiple operating parts can perform the operation individually.
[0028] [twenty two] The gas analyzer according to any one of
[13] to
[21] , wherein the adjustment gas containment section is detachably arranged on the operating section.
[0029] [twenty three] The gas analyzer according to
[22] , wherein the operating unit comprises an operating unit body and at least one lid on which the adjustment gas containment unit can be attached and detached, and the lid is detachably attached to the operating unit body, thereby housing the adjustment gas containment unit, which is detachably attached to the lid, in the internal space of the operating unit body.
[0030] [twenty four] The light-emitting unit is a laser oscillator that emits a laser in a predetermined wavelength range as the light, according to any one of [1] to
[23] .
[0031] [twenty five] The analysis unit is a gas analyzer according to any one of items [1] to
[24] , which performs analysis by absorption spectroscopy.
[0032]
[26] The gas analyzer according to any one of [1] to
[25] , wherein the adjustment gas containment section is a sealed container for sealing the adjustment gas. [Effects of the Invention]
[0033] According to this disclosure, it is possible to provide a gas analyzer that is excellent in terms of ease of adjustment, speed, and safety. [Brief explanation of the drawing]
[0034] [Figure 1A] This is a front view showing the first layer portion of the adjustment section of a gas analyzer according to one embodiment. [Figure 1B] This is a rear view of the part shown in Figure 1A. [Figure 1C] Figure 1A is a projection view of the area shown from an oblique angle. [Figure 1D]This is a front view showing the second layer, located on the back side of the first layer shown in Figure 1A. [Figure 1E] This is a schematic diagram showing the state when adjusting and measuring using a gas analyzer having an adjustment section with a first layer shown in Figure 1A and a second layer shown in Figure 1D. [Figure 1F] This is a conceptual diagram showing the state when measuring with the gas analyzer shown in Figure 1E. [Figure 1G] Figure 1E is a conceptual diagram showing the state when adjusting the gas analyzer. [Figure 2] This is a conceptual diagram showing the state of the first layer of the adjustment section when adjusting the gas analyzer shown in Figure 1E. [Figure 3A] Figure 1A is a partial cross-sectional projection view of the first layer of the adjustment section. [Figure 3B] Figure 3A is a projection view of the area shown from an oblique angle. [Figure 4A] This is a projected view from an oblique angle of another example of the first layer of the adjustment section. [Figure 4B] Figure 4A is a projection view showing a portion of the area. [Figure 4C] Figure 4A is a projection view showing the lid of the switching section and the adjustment gas containment section attached to the lid. [Figure 4D] Figure 4A is a projection view showing the cover of the switching section in the area indicated. [Figure 5] This is a front view showing another example of the first layer portion of the adjustment section. [Figure 6] This is a front view showing another example of the first layer portion of the adjustment section. [Modes for carrying out the invention]
[0035] The embodiments of this disclosure will be described in detail below with reference to the drawings.
[0036] As shown in Figures 1 to 3B, a gas analyzer 1 according to one embodiment includes a light-emitting unit 2 that emits light, an analysis unit 4 that analyzes the physical properties of the gas to be measured 3 based on the intensity of the light emitted from the light-emitting unit 2 and transmitted through the gas to be measured 3, a reflection unit 13 that reflects the light emitted from the light-emitting unit 2 and passed through the gas to be measured 3 toward the analysis unit 4, and an adjustment unit 5 having a light-transmitting unit 6, at least one adjustment gas storage unit 7, and a switching unit 8, wherein the light-emitting unit 2 and the analysis unit 4 are arranged on one side with respect to the gas to be measured 3, the adjustment gas storage unit 7 is located in the light-transmitting unit 6 and, when it contains the adjustment gas, allows the light emitted from the light-emitting unit 2 to pass through the adjustment gas and enter the analysis unit 4, and the switching unit 8 is predetermined in the light-transmitting unit 6 The adjustment unit 5 is switchable between a first state in which the adjustment gas containment section 7 is positioned and a second state in which the adjustment gas containment section 7 is not positioned in the light transmission section 6. The adjustment unit 5 has an adjustment reflective section 14 that reflects light, and a reflective switching section 15 that can switch between a reflective state in which the adjustment reflective section 14 is positioned in the light transmission section 6 and a non-reflective state in which the adjustment reflective section 14 is not positioned in the light transmission section 6. In the reflective state, the adjustment reflective section 14 reflects the light that has left the light-emitting section 2 in the first state and passed through the predetermined adjustment gas containment section 7 before it enters the gas to be measured 3, allowing it to pass through the predetermined adjustment gas containment section 7 and enter the analysis section 4. In the non-reflective state, the adjustment reflective section 14 allows the light that has left the light-emitting section 2 in the second state to be reflected by the reflective section 13 and enter the analysis section 4.
[0037] With the above configuration, by switching to the first state using the switching unit 8 and switching to the reflection state using the reflection switching unit 15, adjustments such as calibration and diagnosis can be performed using the adjustment gas in the predetermined adjustment gas containment unit 7. By switching to the second state using the switching unit 8 and switching to the non-reflection state using the reflection switching unit 15, the measurement of the gas to be measured 3 can be performed. Therefore, with the above configuration, a gas analyzer 1 that is excellent in terms of ease of adjustment, speed, and safety can be realized. The physical properties of the gas to be measured 3 analyzed by the analysis unit 4 include, for example, the concentration or presence or absence of one or more gas components. In the second state, nothing may be placed in the light-transmitting unit 6, that is, in the second state, the light-transmitting unit 6 may be a cavity.
[0038] The reflective switching unit 15 has a reflective operating unit 15a that can operate on the light transmitting unit 6 together with an adjustable reflective unit 14, and the reflective switching unit 15 can position the adjustable reflective unit 14 on the light transmitting unit 6 by the reflective operating unit 15a. With the above configuration, the ease of switching operation by the reflective switching unit 15 can be increased.
[0039] As shown in Figure 1D, the operation of the reflective operating unit 15a is rotation. With the above configuration, the ease of switching operations by the reflective switching unit 15 can be improved.
[0040] As shown in Figure 1D, the reflective operating unit 15a has a first reflective gear section 15a1, and the reflective switching unit 15 has a reflective rotary operating unit 15b having a second reflective gear section 15b1 that meshes with the first reflective gear section 15a1. The reflective operating unit 15a is rotated by the rotation of the reflective rotary operating unit 15b, and the adjustment unit 5 has a reflective cover section that exposes a part of the reflective rotary operating unit 15b and covers the reflective operating unit 15a entirely or partially. With the above configuration, the intrusion of foreign matter into the light-transmitting part 6 of the adjustment unit 5 can be suppressed by the reflective cover section, thereby improving the accuracy of gas analysis. In addition, the reflective operating unit 15a can be operated and operated via the reflective rotary operating unit 15b by operating the reflective rotary operating unit 15b from outside the reflective cover section, for example by hand.
[0041] The system may also have a configuration that includes a reflective drive unit that rotates the reflective rotation operation unit 15b. With this configuration, the reflective drive unit can operate the reflective operation unit 15a via the reflective rotation operation unit 15b.
[0042] The reflective operating unit 15a may be configured to operate as a slide. This configuration also makes it easier to switch between reflective switching units 15.
[0043] The adjustment unit 5 has a first layer portion 16 having an adjustment gas containment portion 7 and a switching portion 8, a second layer portion 17 having an adjustment reflector portion 14 and a reflector switching portion 15, and a light-transmitting portion 6 spanning the first layer portion 16 and the second layer portion 17. With the above configuration, the structure of the adjustment unit 5 having the adjustment reflector portion 14 and the reflector switching portion 15 can be simplified.
[0044] The switching unit 8 may be configured to switch between a first state, a second state, and a third state in which adjustment gas containment units 7 other than the predetermined adjustment gas containment unit 7 are arranged in the light-transmitting unit 6. With the above configuration, by setting the switching unit 8 to the third state and the reflection switching unit 15 to the reflection state, adjustment can be performed using adjustment gas containment units 7 other than the predetermined adjustment gas containment unit 7.
[0045] The adjustment unit 5 has a plurality of adjustment gas storage units 7 that contain adjustment gases with different concentrations or components, and the switching unit 8 can selectively arrange each of the plurality of adjustment gas storage units 7 in the light transmission unit 6. With the above configuration, multiple adjustments can be easily performed by the switching unit 8.
[0046] The multiple adjustment gas containment units 7 may include adjustment gas containment units 7 that contain a span calibration gas for a predetermined gas component, and adjustment gas containment units 7 that contain a zero-point calibration gas for a predetermined gas component. With the above configuration, the span and zero-point calibration for a predetermined gas component can be easily performed by the switching unit 8. The span calibration gas is a gas containing a predetermined gas component at a predetermined concentration. The zero-point calibration gas is a gas (for example, nitrogen) that does not substantially absorb the light emitted from the light-emitting unit 2.
[0047] The multiple adjustment gas storage units 7 may include, as adjustment gases, an adjustment gas storage unit 7 that stores a span calibration gas for a predetermined gas component, an adjustment gas storage unit 7 that stores a zero-point calibration gas for a predetermined gas component, and an adjustment gas storage unit 7 that stores a linearity inspection / confirmation gas for a predetermined gas component. With the above configuration, the span point and zero point calibration, as well as the linearity inspection / confirmation, for a predetermined gas component can be easily performed by the switching unit 8. The linearity inspection / confirmation gas is a gas containing a predetermined gas component at about half the concentration of the span calibration gas.
[0048] The gas analyzer 1 has a calibration gas storage unit 7 that contains a light wavelength diagnostic gas component that serves as a reference for the wavelength of light, as a calibration gas. With this configuration, the switching unit 8 can easily diagnose whether the wavelength of the laser emitted from the light-emitting unit 2 is deviating from the reference. The peak wavelength of the light wavelength diagnostic gas component is within the wavelength range of the laser and is different from the peak wavelength of the gas component to be measured contained in the gas to be measured 3. The calibration gas storage unit 7 containing the light wavelength diagnostic gas component may be placed in the light-transmitting unit 6, and in this state, the measurement of the gas to be measured 3 may be performed while adjusting the laser wavelength to the reference using the light wavelength diagnostic gas component.
[0049] The switching unit 8 has at least one operating unit 8a that can operate on the light-transmitting unit 6, accompanied by at least one adjustment gas containment unit 7, and the switching unit 8 can switch between a first state and a second state by the operation of at least one operating unit 8a. With the above configuration, the ease of switching operations by the switching unit 8 can be increased.
[0050] The switching unit 8 has at least one operating unit 8a that can operate on the light-transmitting unit 6, accompanied by at least one adjustment gas containment unit 7, and the switching unit 8 can switch between a first state, a second state and a third state by the operation of at least one operating unit 8a. With the above configuration, the ease of switching operations by the switching unit 8 can be increased.
[0051] The switching unit 8 has at least one operating unit 8a that can operate on the light-transmitting unit 6 with at least one adjustment gas containment unit 7, and the switching unit 8 can selectively position each of the multiple adjustment gas containment units 7 in the light-transmitting unit 6 by the operation of at least one operating unit 8a. With the above configuration, the ease of switching operations by the switching unit 8 can be increased.
[0052] The operation of the operating unit 8a is rotation. With the above configuration, the ease of switching operations by the switching unit 8 can be increased.
[0053] The operating unit 8a has a first gear section 8a1, and the switching unit 8 has a rotary operating unit 8b having a second gear section 8b1 that meshes with the first gear section 8a1. The operating unit 8a is rotated by the rotation of the rotary operating unit 8b, and the adjustment unit 5 has a cover section 9 that exposes a part of the rotary operating unit 8b and covers the operating unit 8a entirely or partially. With the above configuration, the intrusion of foreign matter into the light-transmitting part 6 of the adjustment unit 5 can be suppressed by the cover section 9, thereby improving the accuracy of gas analysis. In addition, the operating unit 8a can be operated and operated via the rotary operating unit 8b by operating the rotary operating unit 8b from outside the cover section 9, for example by hand.
[0054] The configuration may include a drive unit that rotates the rotary operating unit 8b. With this configuration, the drive unit can operate the operating unit 8a via the rotary operating unit 8b. The drive unit is composed of, for example, an actuator such as an electric motor.
[0055] As shown in Figure 5 or Figure 6, the operation of the operating part 8a may be configured as a slide. This configuration also makes it easier to perform the switching operation by the switching part 8.
[0056] As shown in Figures 1A to 1C, multiple adjustment gas storage units 7 are arranged in a line on the operating unit 8a, and the operation of the operating unit 8a is performed such that the multiple adjustment gas storage units 7 move in the direction in which they are aligned. With this configuration, the ease of switching operations by the switching unit 8 can be increased.
[0057] As shown in Figure 5, the operation of the operating unit 8a is a slide, and multiple adjustment gas storage units 7 are arranged in a line on the operating unit 8a. The operation of the operating unit 8a may be configured to move the multiple adjustment gas storage units 7 in the direction in which they are aligned. This configuration also makes it easier to perform the switching operation by the switching unit 8.
[0058] As shown in Figure 6, the operation of the operating unit 8a is a sliding motion, and a configuration in which multiple operating units 8a can operate individually is also possible. This configuration also makes it easier to perform the switching operation by the switching unit 8.
[0059] As shown in Figures 4A to 4D, the adjustment gas containment section 7 may be configured to be detachably attached to the operating section 8a. With this configuration, multiple types of adjustments can be appropriately performed by attaching and detaching the adjustment gas containment section 7 as a sealed container.
[0060] As shown in Figures 4A to 4D, the operating unit 8a includes an operating unit body 10 and at least one lid 11 to which the adjustment gas containment unit 7 can be attached and detached. The lid 11 may be detachably attached to the operating unit body 10, thereby housing the adjustment gas containment unit 7, which is detachably attached to the lid 11, in the internal space of the operating unit body 10. This configuration makes it easier to attach and detach the adjustment gas containment unit 7.
[0061] As shown in Figure 4A, the cover portion 9 may have a window portion 9c through which the lid 11 passes. This configuration makes it easier to attach and detach the adjustment gas containment portion 7.
[0062] As shown in Figure 3A, the operating unit 8a may be configured to have an alignment part 12 that catches on the cover part 9 to provide resistance to movement each time the switching unit 8 performs a switch. This configuration makes it easier to perform the switching operation by the switching unit 8.
[0063] As shown in Figure 3A, the alignment section 12 is composed of a plurality of holes 12a, and the cover section 9 has a cover section body 9a, a slide member 9b which is slidably positioned in a hole provided in the cover section body 9a and has a convex curved tip surface, and a spring which biases the slide member 9b toward the inside of the cover section 9, and each time the switching unit 8 is switched, the tip surface of the slide member 9b may be selectively positioned to enter one of the plurality of holes 12a which make up the alignment section 12. With the above configuration, the structure of the alignment section 12 can be simplified.
[0064] The light-emitting unit 2 may be configured as a laser oscillator that emits a laser within a predetermined wavelength range as light. With the above configuration, the accuracy of gas analysis can be improved.
[0065] The analysis unit 4 may be configured to perform analysis by absorption spectroscopy. This configuration allows for improved accuracy in gas analysis.
[0066] The gas analyzer 1 may be configured to analyze process gases, etc., as the gas to be measured 3 in situ at an industrial plant. This configuration can improve the efficiency of industrial plant operations.
[0067] The adjustment gas containment section 7 is a sealed container for containing the adjustment gas. With the above configuration, it is not necessary to provide a gas flow path structure for introducing and containing the adjustment gas into the adjustment gas containment section 7, the time required to introduce the adjustment gas into the adjustment gas containment section 7 during adjustment is eliminated, and the possibility of gas leakage during adjustment gas introduction is eliminated. Therefore, with the above configuration, the sealed container as the adjustment gas containment section 7 can improve the ease, speed, and safety of adjustment.
[0068] This disclosure is not limited to the embodiments described above and can be modified in various ways without departing from its essence.
[0069] Therefore, the gas analyzer 1 according to the above embodiment is a reflective type gas analyzer 1 having a light-emitting unit 2 that emits light, an analysis unit 4 that analyzes the physical properties of the gas to be measured 3 based on the intensity of the light that leaves the light-emitting unit 2 and passes through the gas to be measured 3, a reflection unit 13 that reflects the light that leaves the light-emitting unit 2 and passes through the gas to be measured 3 toward the analysis unit 4, and an adjustment unit 5 having a light-transmitting unit 6, at least one adjustment gas storage unit 7, and a switching unit 8, wherein the light-emitting unit 2 and the analysis unit 4 are arranged on one side with respect to the gas to be measured 3, the adjustment gas storage unit 7 is arranged in the light-transmitting unit 6 and, when it contains the adjustment gas, allows the light that leaves the light-emitting unit 2 to pass through the adjustment gas and enter the analysis unit 4, and the switching unit 8 is arranged in the light-transmitting unit 6 when a predetermined adjustment gas storage unit 7 is located therein The adjustment unit 5 is switchable between a first state in which the adjustment gas containment unit 7 is not placed in the light-transmitting unit 6, and the adjustment unit 5 has an adjustment reflective unit 14 that reflects light, and a reflection switching unit 15 that can switch between a reflective state in which the adjustment reflective unit 14 is placed in the light-transmitting unit 6 and a non-reflective state in which the adjustment reflective unit 14 is not placed in the light-transmitting unit 6, and in the reflective state the adjustment reflective unit 14 reflects the light that has left the light-emitting unit 2 in the first state and passed through a predetermined adjustment gas containment unit 7 before it enters the gas to be measured 3, and passes through the predetermined adjustment gas containment unit 7 into the analysis unit 4, and in the non-reflective state the adjustment reflective unit 14 allows the light that has left the light-emitting unit 2 in the second state to be reflected by the reflective unit 13 and enter the analysis unit 4, and various modifications are possible as long as it is a gas analyzer 1. [Explanation of Symbols]
[0070] 1. Gas analyzer 2. Light-emitting part 3. Gas to be measured 4 Analysis Department 5 Adjustment part 6 Light transmission part 7. Adjustment gas containment section 8. Switching section 8a Operating part 8a1 First gear section 8b Rotation operation section 8b1 Second gear section 9. Cover section 9a Cover part 9b Sliding member 9c Window section 10. Main body of the operating unit 11 Lid 12 Alignment section 12a Hole 13 Reflector 14 Reflector for adjustment 15 Reflective switching section 15a Reflection operation part 15a1 First gear section for reflection 15b Rotation control unit for reflection 15b1 Second gear section for reflection 16 1st layer part 17 Second layer part
Claims
1. A light-emitting part, An analysis unit analyzes the physical properties of the gas to be measured based on the intensity of the light emitted from the light-emitting unit and transmitted through the gas to be measured, A reflecting unit that reflects the light that has exited the light-emitting unit and passed through the gas to be measured toward the analysis unit, It has a light-transmitting section, an adjustment section having at least one adjustment gas containment section and a switching section, A reflective gas analyzer in which the light-emitting unit and the analysis unit are arranged on one side with respect to the gas to be measured, The adjustment gas containment section is positioned in the light-transmitting section and contains the adjustment gas, allowing the light that has exited the light-emitting section to pass through the adjustment gas and enter the analysis section. The switching unit is capable of switching between a first state in which a predetermined adjustment gas containment unit is arranged in the light-transmitting unit and a second state in which the adjustment gas containment unit is not arranged in the light-transmitting unit. The adjustment unit includes an adjustment reflective unit that reflects the light, and a reflection switching unit that can switch between a reflective state in which the adjustment reflective unit is positioned in the light-transmitting unit and a non-reflective state in which the adjustment reflective unit is not positioned in the light-transmitting unit. In the aforementioned reflection state, the adjustment reflective section reflects the light that has left the light-emitting section in the first state and passed through the predetermined adjustment gas containment section before it enters the gas to be measured, and allows it to pass through the predetermined adjustment gas containment section into the analysis section. In the non-reflective state, the adjusting reflective section allows the light emitted from the light-emitting section in the second state to be reflected by the reflective section and enter the analysis section, in a gas analyzer.
2. The aforementioned reflective switching unit has a reflective operating unit that can operate relative to the light transmitting unit together with the adjusting reflective unit, The gas analyzer according to claim 1, wherein the reflection switching unit can be positioned in the light transmission unit by the reflection operating unit.
3. The gas analyzer according to claim 2, wherein the operation of the reflective operating part is rotation.
4. The gas analyzer according to claim 1, wherein the adjustment unit comprises a first layer portion having the adjustment gas containment portion and the switching portion, a second layer portion having the adjustment reflecting portion and the reflecting switching portion, and a light transmitting portion spanning the first layer portion and the second layer portion.
5. The adjustment unit has a plurality of adjustment gas storage units that contain adjustment gases having different concentrations or components from each other. The gas analyzer according to claim 1, wherein the switching unit can selectively arrange each of the plurality of adjustment gas containment units in the light-transmitting unit.
6. The gas analyzer according to claim 5, wherein the plurality of adjustment gas storage units include an adjustment gas storage unit that stores a span calibration gas for a predetermined gas component as the adjustment gas, and an adjustment gas storage unit that stores a zero-point calibration gas for a predetermined gas component as the adjustment gas.
7. The gas analyzer according to claim 5, wherein the plurality of adjustment gas storage units include, as the adjustment gas, an adjustment gas storage unit that stores a span calibration gas for a predetermined gas component; as the adjustment gas, an adjustment gas storage unit that stores a zero-point calibration gas for a predetermined gas component; and as the adjustment gas, an adjustment gas storage unit that stores a linearity inspection and confirmation gas for a predetermined gas component.
8. The gas analyzer according to claim 1, further comprising a conditioning gas housing that contains a light wavelength diagnostic gas component that serves as a reference for the wavelength of light, as the conditioning gas.
9. The switching unit has at least one operating unit that can operate on the light-transmitting unit, accompanied by at least one of the adjustment gas containment units. The gas analyzer according to claim 1, wherein the switching unit is capable of switching between the first state and the second state by the operation of the at least one operating unit.
10. The switching unit has at least one operating unit that can operate on the light-transmitting unit, accompanied by at least one of the adjustment gas containment units. The gas analyzer according to claim 5, wherein the switching unit can selectively position each of the plurality of adjustment gas containment units in the light-transmitting unit by the operation of the at least one operating unit.
11. The gas analyzer according to claim 9 or 10, wherein the operation of the operating part is rotation.