Gas analyzer
The gas analyzer addresses ease, speed, and safety issues in calibration and diagnosis through a switching unit that facilitates the use of different adjustment gases and incorporates safety features, 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 an adjustment unit featuring a light-transmitting section, sealed containers, and a switching unit that allows for switching between states to facilitate calibration and measurement using different adjustment gases, including span, zero-point, and linearity inspection gases, with mechanisms for easy operation and safety features like gear systems and detachable containers.
Enhances the ease, speed, and safety of calibration and diagnosis processes by allowing flexible and efficient use of adjustment gases, reducing foreign matter intrusion, and improving measurement accuracy.
Smart Images
Figure 0007859355000001 
Figure 0007859355000002 
Figure 0007859355000003
Abstract
Description
Technical Field
[0001] The present disclosure relates to a gas analyzer.
Background Art
[0002] There is known a gas analyzer having a light-emitting unit that emits light, an analysis unit that analyzes the 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, and an adjustment unit having an adjustment gas storage unit for calibration (see, for example, FIG. 7 of Patent Document 1).
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] A gas analyzer as described above is preferably excellent in terms of 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 that is excellent in terms of 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 the 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, An adjustment unit having a light transmission unit, at least one enclosed container, and a switching unit, The aforementioned sealed container, when placed in the light-transmitting section and filled with the adjustment gas, allows the light that has exited the light-emitting section to pass through the adjustment gas and enter the analysis section. The gas analyzer is capable of switching between a first state in which a predetermined sealing container is placed in the light-transmitting portion and a second state in which the predetermined sealing container is not placed in the light-transmitting portion and the light that has left the light-emitting portion is allowed to enter the analysis portion.
[0008] [2] The gas analyzer according to [1], wherein in the second state, the sealing container other than the predetermined sealing container is arranged in the light-transmitting portion.
[0009] [3] The gas analyzer according to [1], wherein in the second state, the sealed container is not placed in the light-transmitting section.
[0010] [4] In the second state, the sealing containers other than the predetermined sealing containers are placed in the light-transmitting portion. The gas analyzer according to [1] or [2], wherein the switching unit is capable of switching between the first state, the second state, and the third state in which the sealed container is not placed in the light-transmitting unit and the light that has left the light-emitting unit is allowed to enter the analysis unit.
[0011] [5] The adjustment unit has a plurality of sealing containers for sealing the adjustment gases which have different concentrations or components from each other. The gas analyzer according to any one of [1] to [4], wherein the switching unit is capable of selectively positioning each of the plurality of sealed containers in the light-transmitting unit.
[0012] [6] The gas analyzer according to [5], wherein the plurality of sealed containers include a sealed container that seals a span calibration gas for a predetermined gas component as the adjustment gas, and a sealed container that seals a zero-point calibration gas for a predetermined gas component as the adjustment gas.
[0013] [7] The gas analyzer according to [5], wherein the plurality of sealed containers include a sealed container that seals a span calibration gas for a predetermined gas component as the adjustment gas, a sealed container that seals a zero-point calibration gas for a predetermined gas component as the adjustment gas, and a sealed container that seals a linearity inspection / confirmation gas for a predetermined gas component as the adjustment gas.
[0014] [8] A gas analyzer according to any one of [1] to [7], having the sealing container for sealing a light wavelength diagnostic gas component that serves as a reference for the wavelength of light as the adjustment gas.
[0015] [9] The switching unit has at least one operating unit that can operate with respect to the light-transmitting unit, accompanied by at least one of the sealing containers. The gas analyzer according to any one of [1] to [8], 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.
[0016]
[10] The switching unit has at least one operating unit that can operate with respect to the light-transmitting unit, accompanied by at least one of the sealing containers. The gas analyzer according to [4], wherein the switching unit is capable of switching between the first state, the second state and the third state by the operation of the at least one operating unit.
[0017]
[11] The switching unit has at least one operating unit that can operate with respect to the light-transmitting unit, accompanied by at least one of the sealing containers. The gas analyzer according to any one of [5] to [8], wherein the switching unit is capable of selectively positioning each of the plurality of sealed containers in the light-transmitting unit by the operation of the at least one operating unit.
[0018]
[12] The gas analyzer according to any one of [9] to
[11] , wherein the operation of the operation unit is rotation.
[0019]
[13] The operation unit has a first gear unit. The switching unit has a rotation operation unit having a second gear unit that meshes with the first gear unit. The operation unit is rotated by the rotation of the rotation operation unit. The gas analyzer according to
[12] , wherein the adjustment unit has a cover unit that exposes a part of the rotation operation unit and covers the operation unit entirely or partially.
[0020]
[14] The gas analyzer according to
[13] , further comprising a driving unit that rotationally drives the rotation operation unit.
[0021]
[15] The gas analyzer according to any one of [9] to
[11] , wherein the operation of the operation unit is sliding.
[0022]
[16] A plurality of the enclosed containers are arranged side by side on the operation unit. The gas analyzer according to any one of [9] to
[15] , wherein the operation of the operation unit is performed such that the plurality of enclosed containers move in the direction in which the plurality of enclosed containers are arranged.
[0023]
[17] The gas analyzer according to
[15] , wherein a plurality of the operation units can perform the operation individually.
[0024]
[18] The gas analyzer according to any one of [9] to
[17] , wherein the enclosed container is detachably arranged on the operation unit.
[0025]
[19] The gas analyzer according to
[18] , wherein the operating unit comprises an operating unit body and at least one lid on which the sealed container can be attached and detached, and the lid is detachably attached to the operating unit body so as to house the sealed container detachably attached to the lid in the internal space of the operating unit body.
[0026]
[20] The gas analyzer according to any one of [1] to
[19] , wherein the light-emitting unit and the analysis unit are arranged on both sides of the gas to be measured.
[0027] [twenty one] A reflective gas analyzer according to any one of [1] to
[19] , having a reflecting unit that reflects the light that exits the light-emitting unit and passes through the gas to be measured toward the analysis unit, wherein the light-emitting unit and the analysis unit are arranged on one side with respect to the gas to be measured.
[0028] [twenty two] 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 sealed container before it enters the gas to be measured, allowing it to pass through the predetermined sealed container and enter the analysis section. In the non-reflective state, the adjusting reflective section allows the light that has left the light-emitting section in the second state to be reflected by the reflective section and enter the analysis section, as described in
[21] .
[0029] [twenty three] 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
[22] , wherein the reflection switching unit is capable of positioning the adjustment reflection unit in the light transmission unit by the reflection operating unit.
[0030] [twenty four] The gas analyzer according to
[23] , wherein the operation of the reflection mechanism is rotation.
[0031] [twenty five] 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
[24] , 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.
[0032]
[26] The gas analyzer according to
[25] , further comprising a reflection drive unit for rotationally driving the reflection rotation operation unit.
[0033]
[27] The gas analyzer described in
[23] , wherein the operation of the reflective operating part is a slide.
[0034]
[28] The adjustment unit comprises a first layer having the sealed container 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, as described in any one of
[22] to
[27] .
[0035]
[29] 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
[28] .
[0036]
[30] The aforementioned analysis unit is a gas analyzer according to any one of items [1] to
[29] , which performs analysis by absorption spectroscopy. [Effects of the Invention]
[0037] 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]
[0038] [Figure 1A] This is a front view partially showing 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 2] This is a conceptual diagram of a counter-type gas analyzer. [Figure 3] This is a conceptual diagram of a reflection-type gas analyzer. [Figure 4A] This is a partial cross-sectional view showing the adjustment section having the portion shown in Figure 1A. [Figure 4B] Figure 4A is a projection view of the area shown from an oblique angle. [Figure 5A] This is a projection view of another example of an adjustment section, seen from an oblique angle. [Figure 5B] This is a projection view showing a portion of the adjustment section shown in Figure 5A. [Figure 5C] Figure 5A is a projection view showing the lid of the switching section in the adjustment unit and the sealed container attached to the lid. [Figure 5D] Figure 5A is a projection view showing the cover of the switching section in the adjustment unit. [Figure 6] This is a schematic diagram showing the state of a counter-type gas analyzer when it is being adjusted at the measurement site. [Figure 7] This is a schematic diagram showing the state of a reflection-type gas analyzer when it is being adjusted at the measurement site. [Figure 8] This is a schematic diagram showing the state of a counter-type gas analyzer when it is removed from the measurement site and adjusted. [Figure 9] This is a front view showing another example of the adjustment section. [Figure 10] This is a front view showing another example of the adjustment section. [Figure 11A] This is a front view showing the first layer portion in another example of the adjustment unit. [Figure 11B] This is a front view showing the second layer, located on the back side of the first layer shown in Figure 11A. [Figure 11C] This is a schematic diagram showing the state when adjusting a gas analyzer having an adjustment section with a first layer shown in Figure 11A and a second layer shown in Figure 11B. [Figure 11D] Figure 11C is a conceptual diagram showing the state when measuring with the gas analyzer shown. [Figure 11E] Figure 11C is a conceptual diagram showing the state when adjusting the gas analyzer. [Modes for carrying out the invention]
[0039] The embodiments of this disclosure will be described in detail below with reference to the drawings.
[0040] As shown in Figures 1 to 4B, 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, and an adjustment unit 5 having a light-transmitting unit 6, at least one sealed container 7, and a switching unit 8. The sealed container 7 is placed in the light-transmitting unit 6 and contains an adjustment gas, allowing light emitted from the light-emitting unit 2 to pass through the adjustment gas and enter the analysis unit 4. The switching unit 8 can switch between a first state in which a predetermined sealed container 7 is placed in the light-transmitting unit 6 and a second state in which the predetermined sealed container 7 is not placed in the light-transmitting unit 6 and light emitted from the light-emitting unit 2 is allowed to enter the analysis unit 4.
[0041] According to the above configuration, by switching to the first state using the switching unit 8, adjustments such as calibration and diagnosis can be performed using the adjustment gas in the predetermined sealed container 7. By switching to the second state using the switching unit 8, adjustments different from those in the first state, or measurement of the gas to be measured 3, can be performed. Therefore, by using the switching unit 8, the ease, speed, and safety of adjustments can be improved. Furthermore, according to the above configuration, since the sealed container 7 is used for adjustments, the ease, speed, and safety of adjustments can also be improved. Therefore, according to the above configuration, a gas analyzer 1 with excellent ease, speed, and safety of adjustments 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.
[0042] In the second state, a configuration may be used in which a sealing container 7 other than the predetermined sealing container 7 is placed in the light-transmitting section 6. With the above configuration, by switching to the first state using the switching unit 8, adjustment can be performed using the adjustment gas in the predetermined sealing container 7, and by switching to the second state using the switching unit 8, adjustment different from that in the first state can be performed.
[0043] In the second state, the sealed container 7 may not be placed in the light-transmitting section 6. With the above configuration, by switching to the first state using the switching unit 8, adjustment can be performed using the adjustment gas in the predetermined sealed container 7, and by switching to the second state using the switching unit 8, the gas to be measured 3 can be measured. In this case, in the second state, nothing may be placed in the light-transmitting section 6, that is, in the second state, the light-transmitting section 6 may be a cavity.
[0044] In the second state, a sealed container 7 other than the predetermined sealed container 7 is placed in the light-transmitting section 6, and the switching section 8 may be configured to switch between the first state, the second state, and a third state in which the sealed container 7 is not placed in the light-transmitting section 6 and light emitted from the light-emitting section 2 is allowed to enter the analysis section 4. With the above configuration, by switching to the first state with the switching section 8, adjustment can be performed using the adjustment gas in the predetermined sealed container 7; by switching to the second state with the switching section 8, adjustment can be performed differently from that in the first state; and by switching to the third state with the switching section 8, measurement of the gas to be measured 3 can be performed.
[0045] The adjustment unit 5 has a plurality of sealed containers 7 that contain adjustment gases with different concentrations or components, and the switching unit 8 can selectively place each of the plurality of sealed containers 7 in the light-transmitting unit 6. With the above configuration, multiple adjustments can be easily performed by the switching unit 8.
[0046] The multiple sealed containers 7 may include a sealed container 7 that contains a span calibration gas for a predetermined gas component as an adjustment gas, and a sealed container 7 that contains a zero-point calibration gas for a predetermined gas component as an adjustment gas. 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 sealed containers 7 may include a sealed container 7 that contains a span calibration gas for a predetermined gas component as an adjustment gas, a sealed container 7 that contains a zero-point calibration gas for a predetermined gas component as an adjustment gas, and a sealed container 7 that contains a linearity inspection / confirmation gas for a predetermined gas component as an adjustment gas. 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 sealed container 7 that contains a light wavelength diagnostic gas component that serves as a reference for the wavelength of light, as a calibration gas. With the above 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 sealed container 7 containing the light wavelength diagnostic gas component may be placed in the light-transmitting unit 6, and the measurement of the gas to be measured 3 may be performed in this state 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 in conjunction with at least one sealed container 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 in conjunction with at least one sealed container 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 in conjunction with at least one sealed container 7, and the switching unit 8 can selectively place each of the multiple sealed containers 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 9 or Figure 10, the operation of the operating unit 8a may be configured as a slide. This configuration also makes it easier to perform the switching operation by the switching unit 8.
[0056] As shown in Figures 1A to 1C, multiple sealed containers 7 are arranged in a line on the operating unit 8a, and the operation of the operating unit 8a is performed so that the multiple sealed containers 7 move in the direction in which they are lined up. With the above configuration, the ease of switching operations by the switching unit 8 can be increased.
[0057] As shown in Figure 9, the operation of the operating unit 8a is a slide, and multiple sealed containers 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 sealed containers 7 in the direction in which they are lined up. This configuration also makes it easier to perform the switching operation by the switching unit 8.
[0058] As shown in Figure 10, 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 5A to 5D, the sealing container 7 may be configured to be detachably attached to the operating unit 8a. With this configuration, multiple types of adjustments can be appropriately performed by attaching and detaching the sealing container 7.
[0060] As shown in Figures 5A to 5D, the operating unit 8a includes an operating unit body 10 and at least one lid 11 to which the sealed container 7 can be attached and detached. The lid 11 may be detachably attached to the operating unit body 10, thereby housing the sealed container 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 sealed container 7.
[0061] As shown in Figure 5A, 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 sealed container 7.
[0062] As shown in Figure 4A, 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 4A, 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] As shown in Figure 2 or Figure 6, the gas analyzer 1 may be configured as a counter-type gas analyzer 1 in which the light-emitting unit 2 and the analysis unit 4 are arranged on both sides of the gas to be measured 3. With this configuration, the structure of the gas analyzer 1 can be simplified.
[0065] If the gas analyzer 1 is a counter-type gas analyzer 1, the adjustment may be performed with the gas analyzer 1 positioned in the location for measuring the gas to be measured 3, as shown in Figure 6, or with the gas analyzer 1 positioned in a location other than the location for measuring the gas to be measured 3, as shown in Figure 8.
[0066] As shown in Figure 3 or Figure 7, the gas analyzer 1 may be configured as a reflective gas analyzer 1 having a reflecting unit 13 that reflects light that has exited the light-emitting unit 2 and passed through the gas to be measured 3 toward the analysis unit 4, and the light-emitting unit 2 and the analysis unit 4 are arranged on one side relative to the gas to be measured 3. The structure of the gas analyzer 1 can also be simplified with the above configuration.
[0067] If the gas analyzer 1 is a reflection-type gas analyzer 1, the adjustment may be performed with the gas analyzer 1 positioned in the location for measuring the gas to be measured 3, as shown in Figure 7, or with the gas analyzer 1 positioned in a location other than the location for measuring the gas to be measured 3.
[0068] As shown in Figures 11A to 11E, 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 positioned in the light-transmitting unit 6 and a non-reflective state in which the adjustment reflective unit 14 is not positioned in the light-transmitting unit 6. 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 sealed container 7 before it enters the gas to be measured 3, allowing it to pass through the predetermined sealed container 7 and enter the analysis unit 4. In the non-reflective state, the adjustment reflective unit 14 may be configured to allow 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. With the above configuration, by setting the gas to be measured 3 to the reflective state using the reflection switching unit 15, the influence of the gas to be measured 3 on the adjustment can be suppressed and the accuracy of the adjustment can be improved, and by setting the gas to the non-reflective state using the reflection switching unit 15, measurement can be performed. Therefore, with the above configuration, the accuracy and ease of adjustment by the gas analyzer 1 as a reflection-type gas analyzer 1 can be improved.
[0069] As shown in Figure 11B, the reflection switching unit 15 has a reflection operating unit 15a that can operate on the light transmitting unit 6 together with an adjustment reflection unit 14, and the reflection switching unit 15 may be configured so that the adjustment reflection unit 14 can be positioned on the light transmitting unit 6 by the reflection operating unit 15a. With the above configuration, the ease of switching operation by the reflection switching unit 15 can be increased.
[0070] As shown in Figure 11B, the operation of the reflective operating unit 15a may be configured to be rotational. With this configuration, the ease of switching operations by the reflective switching unit 15 can be improved.
[0071] As shown in Figure 11B, 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 may have 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.
[0072] 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.
[0073] 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.
[0074] As shown in Figures 11A to 11C, the adjustment unit 5 may have a configuration comprising a first layer portion 16 having a sealed container 7 and a switching portion 8, a second layer portion 17 having an adjustment reflective portion 14 and a reflection 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 reflective portion 14 and the reflection switching portion 15 can be simplified.
[0075] The light-emitting unit 2 may be configured as a laser oscillator that emits a laser within a predetermined wavelength range as light. With this configuration, the accuracy of gas analysis can be improved.
[0076] The analysis unit 4 may be configured to perform analysis by absorption spectroscopy. This configuration allows for improved accuracy in gas analysis.
[0077] 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.
[0078] This disclosure is not limited to the embodiments described above and can be modified in various ways without departing from its essence.
[0079] Therefore, the gas analyzer 1 according to the above embodiment can be modified in various ways as long as it is a gas analyzer 1 that 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, and an adjustment unit 5 having a light-transmitting unit 6, at least one sealed container 7, and a switching unit 8, wherein the sealed container 7 is placed in the light-transmitting unit 6 and contains an adjustment gas, allowing 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 can switch between a first state in which a predetermined sealed container 7 is placed in the light-transmitting unit 6 and a second state in which the predetermined sealed container 7 is not placed in the light-transmitting unit 6 and light emitted from the light-emitting unit 2 is allowed to enter the analysis unit 4. [Explanation of Symbols]
[0080] 1. Gas analyzer 2. Light-emitting part 3. Gas to be measured 4 Analysis Department 5 Adjustment part 6 Light transmission part 7. Encapsulation container 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, It has a light-transmitting section, at least one sealed container, and an adjustment section having a switching section, The aforementioned sealed container, when placed in the light-transmitting section and filled with the adjustment gas, allows 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 sealing container is placed in the light-transmitting portion and a second state in which the predetermined sealing container is not placed in the light-transmitting portion and the light that has left the light-emitting portion is allowed to enter the analysis portion. The switching unit comprises an operating unit body and at least one lid, and the sealed container, which is detachably attached to the lid, is housed in the internal space of the operating unit body, in a gas analyzer.
2. The gas analyzer according to claim 1, wherein the adjustment unit has an alignment unit that mechanically defines the optical path position of the sealed container in the first state of the switching, and the alignment unit includes a positioning member having a hole, a slide member that selectively fits into the hole, and a spring that biases the slide member inward.
3. The gas analyzer according to claim 1, wherein in the second state, the sealing containers other than the predetermined sealing containers are arranged in the light-transmitting portion.
4. The gas analyzer according to claim 1, wherein in the second state, the sealed container is not placed in the light-transmitting portion.
5. In the second state, the sealing containers other than the predetermined sealing containers are placed in the light-transmitting portion. The gas analyzer according to claim 1, wherein the switching unit can switch between the first state, the second state, and a third state in which the sealed container is not placed in the light-transmitting unit and the light that has left the light-emitting unit is allowed to enter the analysis unit.
6. The adjustment unit has a plurality of sealing containers for sealing the adjustment gases which have different concentrations or components from each other. The gas analyzer according to claim 1, wherein the switching unit is capable of selectively positioning each of the plurality of sealed containers in the light-transmitting unit.
7. The gas analyzer according to claim 6, wherein the plurality of sealed containers include a sealed container that seals a span calibration gas for a predetermined gas component as the adjustment gas, and a sealed container that seals a zero-point calibration gas for a predetermined gas component as the adjustment gas.
8. The gas analyzer according to claim 6, wherein the plurality of sealed containers include a sealed container that seals a span calibration gas for a predetermined gas component as the adjustment gas, a sealed container that seals a zero-point calibration gas for a predetermined gas component as the adjustment gas, and a sealed container that seals a linearity inspection and confirmation gas for a predetermined gas component as the adjustment gas.
9. The gas analyzer according to claim 1, further comprising a sealed container for sealing a light wavelength diagnostic gas component that serves as a reference for the wavelength of light, as the adjusting gas.
10. The switching unit has at least one operating unit that can operate with respect to the light-transmitting unit, accompanied by at least one of the sealing containers. The gas analyzer according to claim 1, wherein the switching unit can switch between the first state and the second state by the operation of the at least one operating unit.
11. The switching unit has at least one operating unit that can operate with respect to the light-transmitting unit, accompanied by at least one of the sealing containers. The gas analyzer according to claim 5, 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.
12. The switching unit has at least one operating unit that can operate with respect to the light-transmitting unit, accompanied by at least one of the sealing containers. The gas analyzer according to claim 6, wherein the switching unit can selectively position each of the plurality of sealed containers in the light-transmitting unit by the operation of the at least one operating unit.
13. The gas analyzer according to any one of claims 10 to 12, wherein the operation of the operating part is rotation.
14. The gas analyzer according to any one of claims 10 to 12, wherein the operation of the operating part is a slide.
15. A gas analyzer according to claim 1 or 2, comprising 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, wherein the light-emitting unit and the analysis unit are arranged on one side with respect to the gas to be measured.
16. 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 sealed container before it enters the gas to be measured, allowing it to pass through the predetermined sealed container and enter the analysis section. The gas analyzer according to claim 15, wherein in the non-reflective state, the adjusting reflective section allows the light that has left the light-emitting section in the second state to be reflected by the reflective section and enter the analysis section.