JP2019215216A - Gas chromatograph - Google Patents

Abstract

To provide a gas chromatograph with which it is possible to suppress the possibility of occurrence of a fault attributable to a human error.SOLUTION: A gas chromatograph 10 comprises: an inlet 11a through which a sample gas from a sample bag 41 is injected; an attachment detection sensor 51 for detecting whether or not the sample bag 41 is attached to the inlet 11a; a column 17 for separating the component of the sample gas injected via the inlet 11a; a sensor 19 for detecting the components separated by the column 17; and a control unit for controlling measurement in the gas chromatograph 10. When attachment of the sample bag 41 to the inlet 11a is not detected by the attachment detection sensor 51 when executing a specific operation, the control unit executes a specific notification and the stoppage of a specific operation.SELECTED DRAWING: Figure 13

Description

  The present invention relates to a gas chromatograph for analyzing components of a sample.

  Conventionally, a gas chromatograph for analyzing a component of a sample is known (for example, see Patent Document 1).

JP 2018-071976 A

  However, in the conventional gas chromatograph, there is a problem that a malfunction due to human error may occur.

  Therefore, an object of the present invention is to provide a gas chromatograph that can suppress the possibility of occurrence of a defect due to a human error.

  The gas chromatograph of the present invention is an injection port into which the sample is injected from a container storing the sample, an attachment presence / absence sensor for detecting whether or not the container is attached to the injection port, and is injected via the injection port. A column for separating the components of the sample, a gas chromatograph comprising a sensor for detecting the components separated by the column, comprising a control unit for controlling the measurement in the gas chromatograph, the control unit, Executing a specific notification and stopping the specific operation when the mounting of the container to the inlet is not detected by the mounting presence / absence sensor when performing the specific operation. It is characterized.

  With this configuration, the gas chromatograph of the present invention is configured such that when the specific operation is performed, when the attachment of the container to the inlet is not detected by the attachment presence / absence sensor, the specific notification and at least the stop of the specific operation are performed. Since one of the operations is performed, it is possible to suppress the possibility of occurrence of a malfunction due to a human error that no container is attached to the inlet when performing a specific operation.

  In the gas chromatograph of the present invention, the specific operation may be an operation of introducing the sample into the gas chromatograph from the container via the inlet.

  With this configuration, the gas chromatograph of the present invention has a problem that is caused by a human error that a container is not attached to the inlet when a sample is introduced from the container into the gas chromatograph via the inlet. Possibilities can be reduced.

  The gas chromatograph of the present invention is an injection port into which the sample is injected from a container storing the sample, an attachment presence / absence sensor for detecting whether or not the container is attached to the injection port, and is injected via the injection port. A column for separating the components of the sample, a gas chromatograph comprising a sensor for detecting the components separated by the column, comprising a control unit for controlling the measurement in the gas chromatograph, the control unit, Performing a specific notification and stopping the specific operation when the mounting of the container to the inlet is detected by the mounting presence / absence sensor when performing a specific operation. It is characterized.

  With this configuration, the gas chromatograph of the present invention has at least a specific notification and a specific operation stop when the mounting of the container to the inlet is detected by the mounting presence / absence sensor when performing the specific operation. Since one of the operations is performed, it is possible to suppress the possibility of occurrence of a malfunction due to a human error that a container is attached to the inlet when performing a specific operation.

  In the gas chromatograph of the present invention, the specific operation may be an operation of cleaning the inlet by discharging gas from the inside of the gas chromatograph via the inlet.

  With this configuration, the gas chromatograph of the present invention is caused by a human error that a container is attached to the inlet when cleaning the inlet by discharging gas from the inside of the gas chromatograph via the inlet. It is possible to suppress the possibility of occurrence of a malfunction that occurs.

  ADVANTAGE OF THE INVENTION The gas chromatograph of this invention can suppress the possibility of generation | occurrence | production of the malfunction resulting from a human error.

FIG. 1 is an external perspective view of a gas chromatograph according to a first embodiment of the present invention. FIG. 2 is an external perspective view of the gas chromatograph shown in FIG. 1 with a sample bag attached. FIG. 3A is a side view of the sample bag shown in FIG. 2 when the cock is open. FIG. 4B is a top view of the sample bag shown in FIG. 3A when the cock is open. (A) It is a side view of the sample bag shown in FIG. 3 when a cock is closed. (B) It is a top view of the sample bag shown in FIG. 3 when a cock is closed. FIG. 2 is a configuration diagram of the gas chromatograph shown in FIG. 1 when external air in the vicinity is temporarily stored in a temporary storage unit when a single pipe is attached to the pipe attaching / detaching section. (A) It is front sectional drawing of the pipe | tube attaching / detaching part shown in FIG. 5 which shows the state which removed the pipe. (B) It is front sectional drawing of the pipe | tube attaching / detaching part shown in FIG. 5 which shows the state to which the single pipe was attached. (C) It is front sectional drawing of the pipe | tube attaching / detaching part shown in FIG. 5 which shows the state to which the collection pipe | tube was attached. FIG. 2 is a configuration diagram of the gas chromatograph shown in FIG. 1 when a gas component stored in a temporary storage unit is detected by a sensor when a single tube is attached to the tube attachment / detachment unit. FIG. 2 is a block diagram of the gas chromatograph shown in FIG. 1. It is a flowchart of operation | movement of the gas chromatograph shown in FIG. It is a flowchart of the outside air non-concentration measurement processing shown in FIG. FIG. 3 is a top view of the sample bag and pump shown in FIG. 2 during collection of a sample gas. It is a flowchart of the container non-concentration measurement process shown in FIG. FIG. 13 is a configuration diagram of a gas chromatograph at a temporary point in the container non-concentration measurement processing shown in FIG. 12. FIG. 14 is a configuration diagram of a gas chromatograph at a temporary point different from the point shown in FIG. 13 in the container non-concentration measurement process. It is a flowchart of the outside air concentration measurement process shown in FIG. FIG. 16 is a configuration diagram of a gas chromatograph at a temporary point in the outside air concentration measurement process shown in FIG. 15. FIG. 17 is a configuration diagram of a gas chromatograph at a different time point from the time point shown in FIG. 16 in the outside air concentration measurement process. FIG. 18 is a configuration diagram of the gas chromatograph at a different time point from the time points shown in FIGS. 16 and 17 in the outside air concentration measurement processing. FIG. 19 is a configuration diagram of a gas chromatograph at a different point in time in the outside air concentration measurement processing from the points shown in FIGS. 16, 17, and 18. It is a flowchart of the container concentration measurement process shown in FIG. 21 is a configuration diagram of a gas chromatograph at a temporary point in the container concentration measurement processing shown in FIG. 20. FIG. FIG. 22 is a configuration diagram of a gas chromatograph at a temporary point different from the point shown in FIG. 21 in the container concentration measurement process. FIG. 7 is a top view of the collection tube and pump shown in FIG. 6 during collection of the sample gas. FIG. 24 is a cross-sectional view of the collection tube shown in FIG. 23 after collecting the sample gas. It is a flowchart of the external collection measurement process shown in FIG. FIG. 7 is a schematic cross-sectional view of a portion near an inlet of a gas chromatograph according to a second embodiment of the present invention. 27 is a flowchart of a container non-concentration measurement process of the gas chromatograph shown in FIG. 26. FIG. 28 is a schematic cross-sectional view of a portion near an inlet of the gas chromatograph at a point in time in the container non-concentration measurement process shown in FIG. 27. FIG. 29 is a schematic cross-sectional view of a portion near the inlet of the gas chromatograph at a different point in time from the point shown in FIG. 28 in the container non-concentration measurement process. 27 is a flowchart of a part of a container concentration measurement process of the gas chromatograph shown in FIG. 26. 31 is a flowchart following the flowchart shown in FIG. 30.

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

(First embodiment)
First, the configuration of the gas chromatograph according to the present embodiment will be described.

  FIG. 1 is an external perspective view of a gas chromatograph 10 according to the present embodiment.

  As shown in FIG. 1, the gas chromatograph 10 includes a housing 11 in which an inlet 11a into which a sample gas is injected is formed.

  FIG. 2 is an external perspective view of the gas chromatograph 10 in a state where a sample bag 41 as a container for storing a sample gas is attached.

  As shown in FIG. 2, the sample bag 41 is attached to the gas chromatograph 10 by inserting the connection portion 41a of the sample bag 41 into the inlet 11a.

  FIG. 3A is a side view of the sample bag 41 when the cock 41b is open. FIG. 3B is a top view of the sample bag 41 when the cock 41b is open. FIG. 4A is a side view of the sample bag 41 when the cock 41b is closed. FIG. 4B is a top view of the sample bag 41 when the cock 41b is closed.

  As shown in FIGS. 3 and 4, the sample bag 41 includes a connection portion 41a for connecting to the housing 11 (see FIG. 2) and a cock 41b for sealing the sample gas. When the cock 41b is open as shown in FIG. 3, the sample bag 41 allows gas to flow between the inside and the outside via the connecting portion 41a, and as shown in FIG. Is closed, gas cannot flow between the inside and the outside via the connection portion 41a.

  FIG. 5 is a configuration diagram of the gas chromatograph 10 when the outside air in the vicinity is temporarily stored in the temporary storage unit 16 when the single tube 42 is attached to the tube attachment / detachment unit 20.

  As shown in FIG. 5, the gas chromatograph 10 includes a tube attaching / detaching portion 20 capable of attaching / detaching a tube through which the sample gas injected from the inlet 11 a is attached, and a substance adsorbed to the tube attached to the tube attaching / detaching portion 20. A desorption heater 12 for desorption, a first pressurizing pump 13 for passing a carrier gas through a pipe mounted on the pipe mounting / dismounting section 20, an inlet 11a and a pipe mounting / dismounting section from the first pressure pump 13 side. A check valve 14 that does not impede gas flow from the inlet 11a and the pipe attaching / detaching portion 20 side to the first pressurizing pump 13 side without obstructing gas flow to the 20 side, and is attached to the tube attaching / detaching portion 20. A suction pump 15 for sucking gas from the tube, a temporary storage unit 16 for temporarily storing gas, a column 17 for separating components of the sample gas, and a second pump for passing carrier gas through the column. 2 pressure pump 8, a sensor 19 for detecting a component of the sample gas separated by the column 17, and a connection between the pipe attaching / detaching section 20, the suction pump 15, the temporary storage section 16, the column 17, the second pressurizing pump 18 and the sensor 19. An eight-way valve 30 for switching the relationship and an attachment presence / absence sensor 51 for detecting whether or not the sample bag 41 is attached to the housing 11 are provided.

  Pipe attachment / detachment unit 20, desorption heater 12, first pressure pump 13, check valve 14, suction pump 15, temporary storage unit 16, column 17, second pressure pump 18, sensor 19, eight-way valve 30, and mounting The presence / absence sensor 51 is housed in the housing 11 (see FIG. 1).

  The temporary storage section 16 is a pipe having a spirally formed portion 16a for securing the length of the flow path.

  The first pressure pump 13 and the second pressure pump 18 are pumps for sending a carrier gas. The carrier gas may be, for example, nitrogen gas, helium gas, or clean room air from which VOC (Volatile Organic Compounds) gas has been removed.

  The attachment presence / absence sensor 51 is provided at the injection port 11a, and detects whether or not the connection portion 41a of the sample bag 41 exists in the injection port 11a. As a detection method of the attachment presence / absence sensor 51, any known detection method of a contact type or a non-contact type can be adopted. For example, the attachment presence / absence sensor 51 is a photo sensor.

  FIG. 6A is a front sectional view of the tube attaching / detaching portion 20 showing a state where the tube is removed. FIG. 6B is a front sectional view of the pipe attaching / detaching section 20 showing a state where the single pipe 42 is attached. FIG. 6C is a front cross-sectional view of the tube attaching / detaching portion 20 showing a state where the collection tube 43 is attached.

  As shown in FIG. 6, the pipe attaching / detaching portion 20 has a fixed position with respect to the housing 11 (see FIG. 1) and a fixing plate 21 having a hole 21a formed therein, and is inserted into the hole 21a. An inert non-adsorption tube 22 that is inert and does not adsorb other substances, a packing 23 that is fixed to the inert non-adsorption tube 22 to prevent gas leakage, and a fixing plate that passes the inert non-adsorption tube 22 through the center. A coil spring 24 disposed between the housing 21 and the packing 23; a fixing plate 25 fixed in position with respect to the housing 11 and having a hole 25a formed therein; An inert non-adsorption tube 26 that does not adsorb the substance, a packing 27 that is fixed to the inert non-adsorption tube 26 to prevent gas leakage, and a fixing plate 25 and a packing that pass through the inert non-adsorption tube 26 through the center. And a coil spring 28 disposed between the 7.

  The inert non-adsorption tube 22 communicates with one of the inlet 11a (see FIG. 5), the check valve 14 (see FIG. 5), and the eight-way valve 30 (see FIG. 5). The inert non-adsorption tube 26 communicates with the inlet 11 a, the check valve 14, and the other of the eight-way valve 30.

  The single tube 42 is an inert tube that does not adsorb other substances. The collection tube 43 has a built-in adsorbent 43a for adsorbing a specific component of the sample gas, and executes collection by adsorbing the component by the adsorbent 43a.

  FIG. 7 is a configuration diagram of the gas chromatograph 10 when the sensor 19 detects a gas component stored in the temporary storage unit 16 when the single pipe 42 is attached to the pipe attachment / detachment unit 20.

  The eight-way valve 30 has a connection port 31 a connected to the pipe attaching / detaching section 20, a connection port 31 b connected to the suction pump 15, a connection port 31 c connected to one end of the temporary storage section 16, and one end of the column 17. A connection port 31d, a connection port 31e connected to the sensor 19, a connection port 31f connected to the other end of the column 17, a connection port 31g connected to the second pressure pump 18, There is provided a valve box 31 having a connection port 31h connected to the other end of the storage section 16.

  The eight-way valve 30 includes a valve body in which the flow paths 32 a to 32 d are formed so as to be rotatable with respect to the valve box 31.

  In the eight-way valve 30, the connection port 31a and the connection port 31h are connected by the channel 32a, the connection port 31b and the connection port 31c are connected by the channel 32b, and the connection port 31d and the connection port 31e are connected by the channel 32c. In the first state (see FIG. 5) in which the connection port 31f and the connection port 31g are connected by the flow path 32d, the connection port 31a and the connection port 31b are connected by the flow path 32a, and the connection port 31c and the connection port 31c are connected by the flow path 32b. The second state (see FIG. 7) in which the connection port 31d is connected, the connection port 31e and the connection port 31f are connected by the flow path 32c, and the connection port 31g and the connection port 31h are connected by the flow path 32d. It is possible.

  FIG. 8 is a block diagram of the gas chromatograph 10.

  As shown in FIG. 8, the gas chromatograph 10 includes a desorption heater 12, a first pressurizing pump 13, a suction pump 15, a second pressurizing pump 18, a sensor 19, a mounting presence / absence sensor 51, and states of the eight-way valve 30. A drive unit 91 for switching between various operations, an operation unit 92 which is an input device such as a button for inputting various operations, a display unit 93 which is a display device such as an LCD (Liquid Crystal Display) for displaying various information, A speaker 94, which is a sound output device that outputs various information by sound or voice, and an external device via a network such as a LAN (Local Area Network) or the Internet, or directly via a wired or wireless connection without a network. A communication unit 95 that is a communication device that communicates with the Semiconductor memory for storing information, and includes an HDD (Hard Disk Drive) storage unit 96 is a nonvolatile storage device such as, a control unit 97 for controlling the entire gas chromatograph 10.

  The control unit 97 includes, for example, a CPU (Central Processing Unit), a ROM (Read Only Memory) storing programs and various data, and a RAM (Random Access Memory) used as a work area of the CPU. I have. The CPU executes a program stored in the ROM or the storage unit 96.

  Next, the operation of the gas chromatograph 10 will be described.

  FIG. 9 is a flowchart of the operation of the gas chromatograph 10.

  As shown in FIG. 9, the control section 97 displays a selection screen for the measurement method on the display section 93 (S101). Here, the measurement method includes a non-concentration measurement of the outside air in which the outside air in the vicinity of the gas chromatograph 10 as the sample gas is measured without concentration, and a non-concentration measurement of the container in which the sample gas inside the sample bag 41 is measured without concentration Measurement, outside air concentration measurement for concentrating and measuring the outside air near the gas chromatograph 10 as a sample gas, container concentration measurement for concentrating and measuring the sample gas inside the sample bag 41, and measurement outside the gas chromatograph 10. There is an external collection measurement for measuring the sample gas collected in the collection tube 43.

  After the processing of S101, the control unit 97 determines whether or not the measurement method has been selected via the operation unit 92 until it determines that the measurement method has been selected via the operation unit 92 (S102).

  When determining that the measurement method has been selected in S102, the control unit 97 determines the selected measurement method (S103).

  When the control unit 97 determines in S103 that the outside air non-concentration measurement is selected, the control unit 97 executes the outside air non-concentration measurement process (S104).

  When the control section 97 determines in S103 that container non-concentration measurement has been selected, the control section 97 executes container non-concentration measurement processing (S105).

  When the control section 97 determines in S103 that the outside air concentration measurement has been selected, the control section 97 executes an outside air concentration measurement process (S106).

  When determining that the container concentration measurement has been selected in S103, the control unit 97 executes a container concentration measurement process (S107).

  When the control unit 97 determines in S103 that the external collection measurement has been selected, the control unit 97 executes an external collection measurement process (S108).

  After the processes in S104 to S108, control unit 97 ends the operation illustrated in FIG.

  FIG. 10 is a flowchart of the outside air non-concentration measurement process.

  As shown in FIG. 10, the control unit 97 determines whether or not start of measurement is instructed through the operation unit 92 until it is determined that start of measurement is instructed through the operation unit 92 (S121). . Therefore, the operator can instruct the start of the measurement via the operation unit 92 after the preparation for the outside air non-concentration measurement is completed. Here, the preparation for the outside air non-concentration measurement is to attach the single tube 42 to the tube attaching / detaching portion 20 without setting anything in the inlet 11a.

  When the control section 97 determines in S121 that the start of the measurement has been instructed, the control section 97 turns off the desorption heater 12 and the first pressurizing pump 13 and turns off the suction pump 15 and the second pressurizing section as shown in FIG. The pump 18 is turned on, and the eight-way valve 30 is set to the first state by the valve drive unit 91 (S122).

  When the gas chromatograph 10 is in the state shown in FIG. 5, the outside air near the gas chromatograph 10 is injected from the inlet 11a, the single pipe 42 attached to the pipe attaching / detaching part 20, the flow path 32a of the eight-way valve 30, the temporary The gas is discharged to the outside of the gas chromatograph 10 by the suction pump 15 through the storage section 16 and the flow path 32b of the eight-way valve 30 in order.

  When the gas chromatograph 10 is in the state shown in FIG. 5, the carrier gas is discharged by the second pressurizing pump 18, and the flow path 32d of the eight-way valve 30, the column 17, the flow path 32c of the eight-way valve 30, and the sensor 19 To the outside of the gas chromatograph 10. The reason why only the carrier gas is sent to the sensor 19 is to stabilize the non-detection state of the sensor 19.

  After the processing of S122, the control unit 97 determines whether or not a specific time has elapsed since the execution of the processing of S122 until it is determined that a specific time has elapsed since the execution of the processing of S122. (S123). Here, the specific time is a time required for a fixed amount of sample gas to enter the temporary storage unit 16, and is a fixed time determined based on the volume of the temporary storage unit 16 and the flow rate by suction by the suction pump 15. Time.

  When the control unit 97 determines in S123 that a specific time has elapsed since the execution of the process in S122, the control unit 97 turns off the desorption heater 12 as shown in FIG. The pump 15 and the second pressurizing pump 18 are turned on, and the eight-way valve 30 is set to the second state by the valve drive unit 91 (S124).

  When the gas chromatograph 10 is in the state shown in FIG. 7, the carrier gas is discharged by the first pressurizing pump 13, discharged from the inlet 11 a to the outside of the gas chromatograph 10, and attached to the pipe attaching / detaching portion 20. The gas is discharged to the outside of the gas chromatograph 10 by the suction pump 15 through the formed single pipe 42 and the flow path 32a of the eight-way valve 30 in order. Therefore, the flow path is cleaned by the carrier gas. For example, the inlet 11a is cleaned by a carrier gas.

  When the gas chromatograph 10 is in the state shown in FIG. 7, the carrier gas is discharged by the second pressurizing pump 18, and the flow path 32d of the eight-way valve 30, the temporary storage unit 16, the flow path 32b of the eight-way valve 30, The gas is discharged to the outside of the gas chromatograph 10 through the column 17, the flow path 32 c of the eight-way valve 30, and the sensor 19 in order. Therefore, the sample gas stored in the temporary storage unit 16 is sent to the sensor 19 together with the carrier gas, and is detected by the sensor 19.

  After the processing of S124, the control unit 97 determines whether or not a specific time has elapsed since the execution of the processing of S124 until it is determined that a specific time has elapsed since the execution of the processing of S124. (S125).

  When the control section 97 determines in S125 that a specific time has elapsed since the execution of the processing in S124, the control section 97 transmits the result of detection by the sensor 19 to a computer outside the gas chromatograph 10 (S126), and the processing shown in FIG. The outside air non-concentration measurement process ends. Therefore, the external computer can display the analysis result of the sample gas.

  Here, an operation of collecting the sample gas inside the sample bag 41 will be described.

  FIG. 11 is a top view of the sample bag 41 and the pump 44 during collection of the sample gas.

  As shown in FIG. 11, the pump 44 has an intake port 44 a for taking outside air near the pump 44 into the pump 44, and a pump for discharging gas taken in the pump 44 to the outside of the pump 44. An exhaust port 44b is provided. The worker connects the connection part 41a of the sample bag 41 to the exhaust port 44b of the pump 44, and drives the pump 44 with the cock 41b of the sample bag 41 opened, thereby removing the outside air near the pump 44. It can be collected as a sample gas inside the sample bag 41. Then, by closing the cock 41b of the sample bag 41, the operator can prevent the sample gas inside the sample bag 41 from leaking out of the sample bag 41.

  FIG. 12 is a flowchart of the container non-concentration measurement process.

  As shown in FIG. 12, the control unit 97 determines whether or not the start of measurement has been instructed until it determines that the start of measurement has been instructed via the operation unit 92 (S141). Therefore, the operator can instruct the start of the measurement via the operation unit 92 after the preparation for the container non-concentration measurement is completed. Here, the preparation of the container non-concentration measurement means that in this embodiment, after attaching the single tube 42 to the tube attaching / detaching portion 20, the connecting portion 41a of the sample bag 41 is inserted into the inlet 11a and the cock 41b is opened. That is.

  When the control section 97 determines in S141 that the start of the measurement has been instructed, the control section 97 determines whether or not the attachment presence / absence sensor 51 has detected that the sample bag 41 has been attached to the housing 11 (S142).

  When the control section 97 determines in S142 that the attachment presence / absence sensor 51 has not detected that the sample bag 41 is attached to the casing 11, the control section 97 instructs the worker to attach the sample bag 41 to the casing 11. A specific notification such as a notification of the content is executed (S143). Here, as the notification method, for example, at least one of the display by the display unit 93 and the output of at least one of sound and voice by the speaker 94 is adopted.

  After the process of S143, the control unit 97 executes the process of S141 again. Therefore, the operator can instruct the start of the measurement via the operation unit 92 after the preparation of the container non-concentration measurement is completed again.

  When the control unit 97 determines in S142 that the attachment presence / absence sensor 51 has detected that the sample bag 41 has been attached to the housing 11, in S142, as shown in FIG. The pump 13 is turned off, the suction pump 15 and the second pressurizing pump 18 are turned on, and the eight-way valve 30 is set to the first state by the valve drive unit 91 (S144).

  When the gas chromatograph 10 is in the state shown in FIG. 13, the sample gas inside the sample bag 41 is injected from the injection port 11 a, the single pipe 42 attached to the pipe attaching / detaching section 20, the flow path 32 a of the eight-way valve 30, The gas is discharged to the outside of the gas chromatograph 10 by the suction pump 15 through the temporary storage section 16 and the flow path 32b of the eight-way valve 30 in order.

  When the gas chromatograph 10 is in the state shown in FIG. 13, the carrier gas is discharged by the second pressurizing pump 18, and the flow path 32d of the eight-way valve 30, the column 17, the flow path 32c of the eight-way valve 30, and the sensor 19 To the outside of the gas chromatograph 10. The reason why only the carrier gas is sent to the sensor 19 is to stabilize the non-detection state of the sensor 19.

  After the process of S144, the control unit 97 determines whether or not a specific time has elapsed after executing the process of S144 until it is determined that a specific time has elapsed since the process of S144 was performed. (S145). Here, the specific time is a time required for a fixed amount of sample gas to enter the temporary storage unit 16, and is a fixed time determined based on the volume of the temporary storage unit 16 and the flow rate by suction by the suction pump 15. Time.

  If the control unit 97 determines in S145 that a specific time has elapsed since the execution of the process in S144, the control unit 97 turns off the desorption heater 12, the first pressurizing pump 13, and the suction pump 15 as shown in FIG. Then, the second pressurizing pump 18 is turned on, and the eight-way valve 30 is set to the first state by the valve drive unit 91 (S146).

  When the gas chromatograph 10 is in the state shown in FIG. 14, the carrier gas is discharged by the second pressurizing pump 18, and the flow path 32d of the eight-way valve 30, the temporary storage part 16, the flow path 32b of the eight-way valve 30, The gas is discharged to the outside of the gas chromatograph 10 through the column 17, the flow path 32 c of the eight-way valve 30, and the sensor 19 in order. The reason why only the carrier gas is sent to the sensor 19 is to stabilize the non-detection state of the sensor 19.

  After the process of S146, the control unit 97 determines whether or not the continuation of the measurement process is instructed until it determines that the continuation of the measurement process is instructed via the operation unit 92 (S147). Therefore, the operator can instruct the continuation of the measurement process via the operation unit 92 after the preparation for the continuation of the measurement process is completed. Here, the preparation for the continuation of the measurement process is to close the cock 41b of the sample bag 41 and pull out the connection portion 41a of the sample bag 41 from the inlet 11a.

  If the control unit 97 determines in S147 that the continuation of the measurement process has been instructed via the operation unit 92, the control unit 97 determines whether or not the attachment presence / absence sensor 51 has detected that the sample bag 41 has not been attached to the housing 11. Is determined (S148).

  If the control unit 97 determines in S148 that the attachment / non-attachment sensor 51 has not detected that the sample bag 41 is not attached to the housing 11, the control unit 97 instructs the worker to remove the sample bag 41 from the housing 11. A specific notification such as a notification of the content is executed (S149). Here, as the notification method, for example, at least one of the display by the display unit 93 and the output of at least one of sound and voice by the speaker 94 is adopted.

  After the process of S149, the control unit 97 executes the process of S147 again. Therefore, the operator can instruct the continuation of the measurement process via the operation unit 92 after the preparation for the continuation of the measurement process is completed again.

  If the control unit 97 determines in S148 that the attachment presence / absence sensor 51 has detected that the sample bag 41 is not attached to the housing 11, the control unit 97 performs S150 similarly to the processing of S124 to S126 (see FIG. 10). -S152 are performed, and the container non-concentration measurement process shown in FIG. 12 is completed.

  FIG. 15 is a flowchart of the outside air concentration measurement process.

  As shown in FIG. 15, the control unit 97 determines whether or not start of measurement has been instructed through the operation unit 92 until it is determined that start of measurement has been instructed through the operation unit 92 (S161). . Therefore, the operator can instruct the start of the measurement via the operation unit 92 after the preparation for the outside air concentration measurement is completed. Here, the preparation for the outside air concentration measurement is to attach the collection tube 43 to the tube attaching / detaching portion 20 without setting anything in the inlet 11a.

  When determining in S161 that the start of the measurement has been instructed, the control unit 97 turns off the desorption heater 12 and the first pressure pump 13 and turns off the suction pump 15 and the second pressure as shown in FIG. The pump 18 is turned on, and the eight-way valve 30 is set to the second state by the valve drive unit 91 (S162).

  When the gas chromatograph 10 is in the state shown in FIG. 16, the outside air near the gas chromatograph 10 is injected from the inlet 11 a and flows through the collection pipe 43 attached to the pipe attaching / detaching part 20 and the flow path 32 a of the eight-way valve 30. The gas is sequentially discharged to the outside of the gas chromatograph 10 by the suction pump 15. Therefore, the outside air near the gas chromatograph 10 is concentrated and adsorbed on the adsorbent 43a of the collection tube 43 as a sample gas.

  When the gas chromatograph 10 is in the state shown in FIG. 16, the carrier gas is discharged by the second pressurizing pump 18, and the flow path 32d of the eight-way valve 30, the temporary storage part 16, the flow path 32b of the eight-way valve 30, The gas is discharged to the outside of the gas chromatograph 10 through the column 17, the flow path 32 c of the eight-way valve 30, and the sensor 19 in order. The reason why only the carrier gas is sent to the sensor 19 is to stabilize the non-detection state of the sensor 19.

  After performing the processing in S162, the control unit 97 determines whether or not a specific time has elapsed after performing the processing in S162 until determining that a specific time has elapsed since the processing in S162. (S163). Here, the “specific time” in S163 can be set in advance via the operation unit 92 according to the degree of concentration by the collection tube 43 desired by the operator.

  When determining in S163 that the specific time has elapsed since the execution of the processing in S162, the control unit 97 turns off the first pressure pump 13 and the suction pump 15 as shown in FIG. The heater 12 and the second pressurizing pump 18 are turned on, and the eight-way valve 30 is set to the second state by the valve driving unit 91 (S164).

  When the gas chromatograph 10 is in the state shown in FIG. 17, the sample gas adsorbed by the collection tube 43 is desorbed from the adsorbent 43a by the collection tube 43 being heated by the desorption heater 12, and the adsorbent is removed. It occurs in a state of high concentration near 43a.

  When the gas chromatograph 10 is in the state shown in FIG. 17, the carrier gas is discharged by the second pressurizing pump 18, and the flow path 32d of the eight-way valve 30, the temporary storage unit 16, the flow path 32b of the eight-way valve 30, The gas is discharged to the outside of the gas chromatograph 10 through the column 17, the flow path 32 c of the eight-way valve 30, and the sensor 19 in order. The reason why only the carrier gas is sent to the sensor 19 is to stabilize the non-detection state of the sensor 19.

  After the processing of S164, the control unit 97 determines whether or not a specific time has elapsed after executing the processing of S164 until determining that a specific time has elapsed since the processing of S164. (S165). Here, the “specific time” in S165 can be set in advance via the operation unit 92 based on the heating / desorption time suitable for the adsorbent 43a of the collection tube 43.

  When the control unit 97 determines in S165 that a specific time has elapsed since the execution of the process in S164, as shown in FIG. 18, the desorption heater 12, the first pressurizing pump 13, the suction pump 15, and the second The pressurizing pump 18 is turned on, and the eight-way valve 30 is set to the first state by the valve drive unit 91 (S166).

  When the gas chromatograph 10 is in the state shown in FIG. 18, the carrier gas is discharged by the first pressurizing pump 13, discharged from the inlet 11a to the outside of the gas chromatograph 10, and attached to the pipe attaching / detaching portion 20. The gas is discharged to the outside of the gas chromatograph 10 by the suction pump 15 through the collected pipe 43, the flow path 32a of the eight-way valve 30, the temporary storage section 16, and the flow path 32b of the eight-way valve 30 in this order. Therefore, the sample gas that has been concentrated to a high concentration in the vicinity of the adsorbent 43a of the collection tube 43 is sent to the temporary storage unit 16 together with the carrier gas and stored in the temporary storage unit 16. Further, the inlet 11a is cleaned by the carrier gas.

  When the gas chromatograph 10 is in the state shown in FIG. 18, the carrier gas is discharged by the second pressurizing pump 18, and the flow path 32d of the eight-way valve 30, the column 17, the flow path 32c of the eight-way valve 30, and the sensor 19 To the outside of the gas chromatograph 10. The reason why only the carrier gas is sent to the sensor 19 is to stabilize the non-detection state of the sensor 19.

  After the processing of S166, the control unit 97 determines whether or not a specific time has elapsed after executing the processing of S166 until it is determined that a specific time has elapsed since the processing of S166 was performed. (S167). Here, the specific time is a time required for a fixed amount of sample gas to enter the temporary storage unit 16, and is a fixed time determined based on the volume of the temporary storage unit 16 and the flow rate by suction by the suction pump 15. Time.

  When the control unit 97 determines in S167 that a specific time has elapsed since the execution of the process in S166, as shown in FIG. 19, the desorption heater 12, the first pressure pump 13, the suction pump 15, and the second The pressurizing pump 18 is turned on, and the eight-way valve 30 is set to the second state by the valve drive unit 91 (S168).

  When the gas chromatograph 10 is in the state shown in FIG. 19, the carrier gas is discharged by the first pressurizing pump 13, discharged from the inlet 11 a to the outside of the gas chromatograph 10, and attached to the pipe attaching / detaching portion 20. The gas is discharged to the outside of the gas chromatograph 10 by the suction pump 15 through the collected collection pipe 43 and the flow path 32a of the eight-way valve 30 in order. Therefore, the flow path is cleaned by the carrier gas. For example, the inlet 11a and the collecting tube 43 are cleaned by a carrier gas.

  When the gas chromatograph 10 is in the state shown in FIG. 19, the carrier gas is discharged by the second pressurizing pump 18, and the flow path 32d of the eight-way valve 30, the temporary storage part 16, the flow path 32b of the eight-way valve 30, The gas is discharged to the outside of the gas chromatograph 10 through the column 17, the flow path 32c of the eight-way valve 30, and the sensor 19 in order. Therefore, the sample gas stored in the temporary storage unit 16 is sent to the sensor 19 together with the carrier gas, and is detected by the sensor 19.

  After the process of S168, the control unit 97 determines whether or not a specific time has elapsed since the execution of the process of S168 until it is determined that a specific time has elapsed since the execution of the process of S168. (S169).

  When the control section 97 determines in S169 that a specific time has elapsed since the execution of the processing in S168, the control section 97 transmits the detection result by the sensor 19 to a computer outside the gas chromatograph 10 (S170), and FIG. The outside air concentration measurement process ends. Therefore, the external computer can display the analysis result of the sample gas.

  FIG. 20 is a flowchart of the container concentration measurement process.

  As shown in FIG. 20, the control unit 97 determines whether or not start of measurement is instructed via the operation unit 92 until it is determined that start of measurement is instructed via the operation unit 92 (S181). . Therefore, the operator can instruct the start of the measurement via the operation unit 92 after the preparation of the container concentration measurement is completed. Here, the preparation of the container concentration measurement means that, in the present embodiment, after attaching the collecting tube 43 to the tube attaching / detaching portion 20, the connecting portion 41a of the sample bag 41 is inserted into the inlet 11a and the cock 41b is opened. That is.

  When the control section 97 determines in S181 that the start of measurement has been instructed, the control section 97 executes the processing of S182 to S183 similar to the processing of S142 to S143 (see FIG. 12).

  After the process of S183, the control unit 97 executes the process of S181 again. Therefore, the operator can instruct the start of the measurement via the operation unit 92 after the preparation of the container concentration measurement is completed again.

  When determining in S182 that the attachment presence / absence sensor 51 has detected that the sample bag 41 has been attached to the housing 11 in S182, the control unit 97, as shown in FIG. The pump 13 is turned off, the suction pump 15 and the second pressurizing pump 18 are turned on, and the eight-way valve 30 is set in the second state by the valve drive unit 91 (S184).

  When the gas chromatograph 10 is in the state shown in FIG. 21, the sample gas inside the sample bag 41 is injected from the injection port 11 a, and the collection pipe 43 attached to the pipe attaching / detaching part 20 and the flow path 32 a of the eight-way valve 30. , And discharged to the outside of the gas chromatograph 10 by the suction pump 15. Therefore, the sample gas inside the sample bag 41 is concentrated and adsorbed on the adsorbent 43a of the collection tube 43.

  When the gas chromatograph 10 is in the state shown in FIG. 21, the carrier gas is discharged by the second pressurizing pump 18, and the flow path 32d of the eight-way valve 30, the temporary storage unit 16, the flow path 32b of the eight-way valve 30, The gas is discharged to the outside of the gas chromatograph 10 through the column 17, the flow path 32 c of the eight-way valve 30, and the sensor 19 in order. The reason why only the carrier gas is sent to the sensor 19 is to stabilize the non-detection state of the sensor 19.

  After the processing of S184, the control unit 97 determines whether or not a specific time has elapsed after executing the processing of S184 until it determines that a specific time has elapsed since the processing of S184. (S185). Here, the “specific time” in S185 can be set in advance via the operation unit 92 in accordance with the degree of concentration by the collection tube 43 desired by the operator.

  When the control unit 97 determines in S185 that a specific time has elapsed since the execution of the process in S184, the control unit 97 turns off the desorption heater 12, the first pressure pump 13, and the suction pump 15 as shown in FIG. State, the second pressurizing pump 18 is turned on, and the eight-way valve 30 is set to the second state by the valve drive unit 91 (S186).

  When the gas chromatograph 10 is in the state shown in FIG. 22, the carrier gas is discharged by the second pressurizing pump 18, and the flow path 32d of the eight-way valve 30, the temporary storage unit 16, the flow path 32b of the eight-way valve 30, The gas is discharged to the outside of the gas chromatograph 10 through the column 17, the flow path 32 c of the eight-way valve 30, and the sensor 19 in order. The reason why only the carrier gas is sent to the sensor 19 is to stabilize the non-detection state of the sensor 19.

  After the process of S186, the control unit 97 determines whether or not the continuation of the measurement process is instructed until it determines that the continuation of the measurement process is instructed via the operation unit 92 (S187). Therefore, the operator can instruct the continuation of the measurement process via the operation unit 92 after the preparation for the continuation of the measurement process is completed. Here, the preparation for the continuation of the measurement process is to close the cock 41b of the sample bag 41 and pull out the connection portion 41a of the sample bag 41 from the inlet 11a.

  When determining in S187 that the continuation of the measurement process has been instructed via the operation unit 92, the control unit 97 executes the processes of S188 to S189 similar to the processes of S148 to S149 (see FIG. 12).

  After the process of S189, the control unit 97 executes the process of S187 again. Therefore, the operator can instruct the continuation of the measurement process via the operation unit 92 after the preparation for the continuation of the measurement process is completed again.

  When the control unit 97 determines in S188 that the attachment presence / absence sensor 51 has detected that the sample bag 41 is not attached to the housing 11, in S188, similarly to the processing in S164 to S170 (see FIG. 15). 20 to end the container concentration measurement process shown in FIG.

  Here, the operation of collecting the sample gas inside the collection tube 43 will be described.

  FIG. 23 is a top view of the collection tube 43 and the pump 44 during collection of the sample gas.

  As shown in FIG. 23, the worker connects the collection pipe 43 to the suction port 44 a of the pump 44 and drives the pump 44 so that the outside air near the pump 44 is sampled into the collection pipe 43. Can be collected as gas. That is, the outside air near the pump 44 is concentrated and adsorbed on the adsorbent 43a of the collection tube 43 as a sample gas. In FIG. 23, a cross section of the collection tube 43 is shown.

  FIG. 24 is a cross-sectional view of the collection tube 43 after the collection of the sample gas.

  When the collection of the sample gas into the collection tube 43 by the pump 44 is completed, the operator attaches caps 43b to both ends of the collection tube 43 as shown in FIG. It is possible to prevent the gas from leaking out of the collection tube 43.

  FIG. 25 is a flowchart of the external collection measurement process.

  As shown in FIG. 25, the control unit 97 determines whether or not start of measurement has been instructed via the operation unit 92 until it determines that start of measurement has been instructed via the operation unit 92 (S201). . Therefore, the operator can instruct the start of the measurement via the operation unit 92 after the preparation for the external collection measurement is completed. Here, the preparation for the external collection measurement means that nothing is set in the inlet 11a, the cap 43b of the collection tube 43 shown in FIG. 24 is removed, and the collection tube 43 is attached to the tube attaching / detaching portion 20. It is.

  When the control unit 97 determines in S201 that the start of the measurement has been instructed, the control unit 97 executes the processing of S202 to S208 similar to the processing of S164 to S170 (see FIG. 15), and executes the external collection measurement processing shown in FIG. To end.

  As described above, when performing a specific operation (S144 or S184), that is, when the sample bag 41 is to be attached to the inlet 11a, the gas chromatograph 10 transmits the gas to the inlet 11a. When the attachment of the sample bag 41 is not detected by the attachment presence / absence sensor 51 (NO in S142 or NO in S182), the specific notification (S143 or S183) and the stop of the specific operation are executed. In the measurement method in which the sample gas is injected from the container, that is, in the non-concentration measurement of the container or the concentration measurement of the container, a failure caused by a human error that the sample bag 41 is not attached to the inlet 11a when performing a specific operation. Can be suppressed.

  In particular, when performing the operation (S144 or S184) of “introducing the sample gas into the gas chromatograph 10 from the sample bag 41 via the inlet 11a”, the gas chromatograph 10 moves the sample bag 41 to the inlet 11a. When the attachment is not detected by the attachment presence / absence sensor 51 (NO in S142 or NO in S182), a specific notification (S143 or S183) and “the sample gas enters the gas chromatograph 10 from the sample bag 41 via the inlet 11a”. Is stopped, the operation of “introducing the sample gas from the sample bag 41 into the gas chromatograph 10 via the inlet 11a” is performed. Is not attached It is possible to suppress the possibility of the occurrence of problems caused by the error.

  The "specific operation" in which the sample bag 41 should be attached to the inlet 11a is other than the operation of "introducing the sample gas into the gas chromatograph 10 from the sample bag 41 via the inlet 11a". Operation is also acceptable. In addition, only one of the specific notification and the specific operation stop may be executed.

  When the gas chromatograph 10 performs a specific operation (S150 or S194), that is, when the sample bag 41 is to be removed from the inlet 11a, the attachment of the sample bag 41 to the inlet 11a is attached. When the detection is performed by the presence / absence sensor 51 (NO in S148 or NO in S188), the specific notification (S149 or S189) and the stop of the specific operation are executed. When a specific operation is performed, it is possible to suppress the possibility of occurrence of a defect due to a human error that the sample bag 41 is attached to the injection port 11a.

  In particular, when performing the operation (S150, S192, or S194) of “cleaning the inlet 11a by discharging gas from the inside of the gas chromatograph 10 via the inlet 11a”, the gas chromatograph 10 returns to the inlet 11a. When the attachment of the sample bag 41 is detected by the attachment presence / absence sensor 51 (NO in S148 or NO in S188), the specific notification (S149 or S189) and “the gas from the inside of the gas chromatograph 10 via the inlet 11a The operation of “cleaning the inlet 11a by discharging the gas” is performed, and the operation of “cleaning the inlet 11a by discharging gas from the inside of the gas chromatograph 10 via the inlet 11a” is performed. Injection 11 when running Sample bag 41 it is possible to suppress the possibility of the occurrence of problems due to human error that is attached to. That is, the gas chromatograph 10 has a problem in that the sample gas in the sample bag 41 is diluted by the carrier gas for cleaning due to the fact that the sample bag 41 is attached at the time of cleaning the flow path, As a result, it is possible to suppress the possibility of occurrence of a defect caused by a human error, such as a defect that the cleaning of the flow path is not performed normally.

  The "specific operation" in which the sample bag 41 should be removed from the inlet 11a is "cleaning the inlet 11a by discharging gas from the inside of the gas chromatograph 10 via the inlet 11a." An operation other than the operation may be performed. In addition, only one of the specific notification and the specific operation stop may be executed.

  For example, even when the sample bag 41 is attached (NO in S148 or NO in S188), the gas chromatograph 10 continues the measurement process immediately after executing the specific notification (S149 or S189) (S150). Alternatively, S190) may be performed. When the gas chromatograph 10 continues the measurement process immediately after executing the specific notification (S149 or S189) (S150 or S190), it is determined that the sample bag 41 is not attached to the housing 11 by the attachment presence / absence sensor. The specific notification may be continuously executed until the detection is performed by the detection unit 51 or the container non-concentration measurement process or the container concentration measurement process ends. When the gas chromatograph 10 continues the measurement process immediately after executing the specific notification (S149 or S189) (S150 or S190), it is determined that the sample bag 41 is not attached to the housing 11 by the attachment presence / absence sensor. Unless detected by 51, the first pressurizing pump 13 and the suction pump 15 may be turned off in S150 or S194.

  Since the gas chromatograph 10 can be switched between the concentration measurement process and the non-concentration measurement process, whichever is more suitable for the measurement of the target sample, the suitability of the measurement method can be improved.

  Since the gas chromatograph 10 once concentrates the sample gas by the collection tube 43 in the concentration measurement processing such as the outside air concentration measurement, the container concentration measurement and the external collection measurement, even if the sample gas has a very low concentration, Can be detected.

  In the gas chromatograph 10, since there is a difference in the easiness of being adsorbed by the collection tube 43 depending on the components of the sample gas, in the concentration measurement processing, the measurement is performed on a specific component of the sample gas which is easily adsorbed by the collection tube 43. Can be properly executed.

  In the non-concentration measurement processing such as the outside air non-concentration measurement and the container non-concentration measurement, the gas chromatograph 10 does not adsorb a specific component by the single tube 42, and thus appropriately performs measurement on all components of the sample gas. be able to.

  Since the gas chromatograph 10 can be switched between a container concentration measurement process and a container non-concentration measurement process in which the sample gas is injected from the sample bag 41 via the inlet 11a, the sample collected at a location away from the gas chromatograph 10 can be switched. Gas components can be detected, and convenience can be improved.

  The gas chromatograph 10 can switch between the outside air concentration measurement process and the outside air non-concentration measurement process in which the outside air near the gas chromatograph 10 is directly injected as a sample gas via the inlet 11a, thereby improving convenience. Can be.

  In the gas chromatograph 10, since the sample gas is collected by the collection tube 43 at a location away from the gas chromatograph 10, the transport of the sample gas can be made more efficient, and the convenience can be improved.

(Second Embodiment)
First, the configuration of the gas chromatograph according to the present embodiment will be described.

  Note that, of the configuration of the gas chromatograph according to the present embodiment, the same reference numerals as those of the configuration of the gas chromatograph 10 (see FIG. 5) according to the first embodiment denote the same reference numerals. And a detailed description is omitted.

  FIG. 26 is a schematic cross-sectional view of a portion near the inlet 11a of the gas chromatograph 310 according to the present embodiment.

  As shown in FIG. 26, the gas chromatograph 310 includes a container driving device 320 for driving the sample bag 41 (see FIG. 3) near the inlet 11a.

  The container driving device 320 includes a cock opening / closing device 321 that opens and closes the cock 41b (see FIG. 3) of the sample bag 41, and a connecting portion 41a (of the sample bag 41) by moving the cock opening / closing device 321 with respect to the injection port 11a. 3) with respect to the inlet 11a, a cock opening / closing device 321 and a cover 323 which covers a part of the container attaching / detaching device 322.

  The cock opening / closing device 321 includes a cock attachment portion 321a to which the cock 41b is attached, and a main body 321b having a motor (not shown) for rotating the cock attachment portion 321a about the shaft 320a.

  The container attachment / detachment device 322 extends in a direction indicated by an arrow 320b perpendicular to the axis 320a, and has a rod-shaped member 322a to which the cock opening / closing device 321 is attached. And a main body 322b having a motor (not shown).

  Next, the operation of the gas chromatograph 310 will be described.

  Note that, among the operations of the gas chromatograph 310, operations other than the operations described below are the same as the operations of the gas chromatograph 10 according to the first embodiment, and thus detailed description will be omitted.

  FIG. 27 is a flowchart of the container non-concentration measurement process of the gas chromatograph 310.

  As shown in FIG. 27, the control unit 97 determines whether or not the start of the measurement is instructed until it determines that the start of the measurement is instructed via the operation unit 92 (S441). Therefore, the operator can instruct the start of the measurement via the operation unit 92 after the preparation for the container non-concentration measurement is completed. Here, the preparation of the container non-concentration measurement refers to, in the present embodiment, after attaching the single tube 42 to the tube attaching / detaching portion 20, the cock of the sample bag 41 with the cock 41b closed as shown in FIG. 41b is attached to the cock attachment portion 321a.

  When the control unit 97 determines in S441 that the start of the measurement has been instructed, the connection unit 41a of the sample bag 41 in which the cock 41b is attached to the cock attachment unit 321a of the cock opening / closing device 321 attached to the rod-shaped member 322a is connected. The amount of protrusion of the rod-shaped member 322a in the direction indicated by the arrow 320b is changed by the container attaching / detaching device 322 to the amount of protrusion inserted into the inlet 11a (hereinafter, referred to as "the amount of protrusion when inserted") (S442). When the projecting amount of the rod-shaped member 322a is changed to the projecting amount at the time of insertion, the connecting portion 41a of the sample bag 41 is inserted into the inlet 11a as shown in FIG.

  After the process of S442, the control unit 97 sets the angle of the cock attachment part 321a about the shaft 320a to the opening angle of the cock 41b attached to the cock attachment part 321a (hereinafter, referred to as "cock opening angle"). It is changed by the cock opening / closing device 321 (S443). When the angle of the cock attaching portion 321a is changed to the cock opening angle, the cock 41b is opened.

  Next, the control section 97 executes the process of S444 similar to the process of S142 (see FIG. 12).

  When the control unit 97 determines in S444 that the attachment presence / absence sensor 51 has not detected that the sample bag 41 is attached to the housing 11, the control unit 97 determines the closing angle of the cock 41b attached to the cock attachment unit 321a (hereinafter referred to as the closing angle). The “cock closing angle” is changed by the cock opening / closing device 321 about the angle of the cock mounting portion 321a about the shaft 320a (S445). When the angle of the cock attachment portion 321a is changed to the cock closing angle, the cock 41b is closed.

  After the process of S445, the control unit 97 removes the connecting portion 41a of the sample bag 41 in which the cock 41b is attached to the cock attaching portion 321a of the cock opening / closing device 321 attached to the rod-shaped member 322a from the inlet 11a. The protrusion amount of the bar-shaped member 322a in the direction indicated by the arrow 320b is changed by the container attaching / detaching device 322 to the protrusion amount (hereinafter, referred to as “projection amount at extraction”) (S446). When the amount of protrusion of the rod-shaped member 322a is changed to the amount of protrusion at the time of extraction, the connection portion 41a of the sample bag 41 is extracted from the inlet 11a as shown in FIG.

  After the process of S446, the control unit 97 executes the same process of S447 as the process of S143 (see FIG. 12).

  After the process of S447, the control unit 97 executes the process of S441 again. Therefore, the operator can instruct the start of the measurement via the operation unit 92 after the preparation of the container non-concentration measurement is completed again.

  When determining in S444 that the attachment presence / absence sensor 51 has detected that the sample bag 41 has been attached to the housing 11 in S444, the control unit 97 executes S448 to S448 similar to the processing of S144 to S146 (see FIG. 12). The process of S450 is performed.

  After the process of S450, the control unit 97 executes the processes of S451 to S452 similar to the processes of S445 to S446.

  After the process of S452, the control unit 97 executes the same process of S453 as the process of S148 (see FIG. 12).

  If the control unit 97 determines in S453 that the attachment presence / absence sensor 51 has not detected that the sample bag 41 is not attached to the housing 11, the control unit 97 performs the same processing in S454 as the processing in S149 (see FIG. 12). Execute.

  After the process of S454, the control unit 97 executes the process of S453 again. Therefore, the operator can confirm a problem such as the sample bag 41 being attached to the housing 11.

  When the control unit 97 determines in S453 that the attachment presence / absence sensor 51 has detected that the sample bag 41 is not attached to the housing 11, in S453, the control unit 97 performs the same S455 to S150 to S152 (see FIG. 12). The processing of S457 is executed, and the container non-concentration measurement processing shown in FIG. 27 ends.

  FIG. 30 and FIG. 31 are flowcharts of the container concentration measurement process of the gas chromatograph 310.

  As shown in FIGS. 30 and 31, the control unit 97 determines whether or not the start of measurement has been instructed until it determines that the start of measurement has been instructed via the operation unit 92 (S481). Therefore, the operator can instruct the start of the measurement via the operation unit 92 after the preparation of the container concentration measurement is completed. Here, the preparation of the container concentration measurement means, in the present embodiment, after attaching the collection tube 43 to the tube attaching / detaching portion 20, as shown in FIG. 28, the cock of the sample bag 41 with the cock 41b closed. 41b is attached to the cock attachment portion 321a.

  When the control section 97 determines in S441 that the start of measurement has been instructed, the control section 97 executes the processing of S482 to S487 similar to the processing of S442 to S447 (see FIG. 27).

  When the control unit 97 determines in S484 that the attachment presence / absence sensor 51 has detected that the sample bag 41 is attached to the housing 11, in S484, the control unit 97 performs the same processing in S488 to S186 (see FIG. 20). The processing of S490 is executed.

  After the process of S490, the control unit 97 executes the processes of S491 to S494 similar to the processes of S451 to S454 (see FIG. 27).

  When the control unit 97 determines in S493 that the attachment presence / absence sensor 51 has detected that the sample bag 41 is not attached to the housing 11, the control unit 97 performs S495 to S495 similar to the processing of S190 to S196 (see FIG. 20). The processing of S501 is executed, and the container concentration measurement processing shown in FIGS. 30 and 31 is ended.

  As described above, when the cock 41b of the sample bag 41 should be opened (YES in S441 or YES in S481), the gas chromatograph 310 automatically opens the cock 41b (S443 or S483). In the measurement method in which the sample gas is injected from the sample bag 41, that is, in the non-concentration measurement of the container or the concentration measurement of the container, the injection of the sample gas is performed in a state where the cock 41b is closed. It is possible to suppress the possibility of the occurrence of the inconvenience and to reduce the work load on the worker.

  The gas chromatograph 310 automatically closes the cock 41b when the cock 41b should be closed (S451 or S491). Therefore, in the container non-concentration measurement or the container concentration measurement, the sample bag 41 is attached at the time of cleaning the flow path. By doing so, it is possible to suppress the possibility of occurrence of troubles due to human error, such as the trouble that the sample gas in the sample bag 41 is diluted by the carrier gas for cleaning, and to reduce the work load on the operator. Can be reduced.

  When the sample bag 41 should be attached (YES in S441 or YES in S481), the gas chromatograph 310 automatically attaches the sample bag 41 (S442 or S482). In the above, the possibility of occurrence of a malfunction caused by human error, such as a malfunction that the sample gas is injected in a state where the sample bag 41 is not attached, can be reduced, and the work load on the operator can be reduced. can do.

  The gas chromatograph 310 automatically removes the sample bag 41 when the sample bag 41 is to be removed (S452 or S492). Therefore, the sample bag 41 is attached in the container non-concentration measurement or the container concentration measurement. As a result, it is possible to suppress the possibility of occurrence of a defect caused by a human error, such as a defect that the cleaning of the flow path is not performed normally, and to reduce the work load on the operator.

10 gas chromatograph 11a inlet 17 column 19 sensor 41 sample bag (container)
51 Installation / existence sensor 97 Control unit 310 Gas chromatograph

Claims (4)

An inlet into which the sample is injected from a container storing the sample,
An attachment presence / absence sensor that detects the presence / absence of attachment of the container to the inlet,
A column for separating the components of the sample injected through the inlet,
And a sensor for detecting the component separated by the column, a gas chromatograph comprising:
A control unit that controls measurement in the gas chromatograph,
The control unit, when performing a specific operation, when the attachment of the container to the inlet is not detected by the attachment presence or absence sensor, a specific notification, at least one of the stop of the specific operation Gas chromatograph.   2. The gas chromatograph according to claim 1, wherein the specific operation is an operation of introducing the sample from the container into the gas chromatograph via the inlet. 3. An inlet into which the sample is injected from a container storing the sample,
An attachment presence / absence sensor that detects the presence / absence of attachment of the container to the inlet,
A column for separating the components of the sample injected through the inlet,
And a sensor for detecting the component separated by the column, a gas chromatograph comprising:
A control unit that controls measurement in the gas chromatograph,
The control unit, when performing a specific operation, when the attachment of the container to the inlet is detected by the attachment presence or absence sensor, a specific notification, at least one of the stop of the specific operation Gas chromatograph.   4. The gas chromatograph according to claim 3, wherein the specific operation is an operation of cleaning the inlet by discharging gas from the inside of the gas chromatograph via the inlet.

Images