JPS554509A - Sample drawing method - Google Patents

Sample drawing method

Info

Publication number
JPS554509A
JPS554509A JP7640678A JP7640678A JPS554509A JP S554509 A JPS554509 A JP S554509A JP 7640678 A JP7640678 A JP 7640678A JP 7640678 A JP7640678 A JP 7640678A JP S554509 A JPS554509 A JP S554509A
Authority
JP
Japan
Prior art keywords
valve
sample
closed
exhaust
vacuum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7640678A
Other languages
Japanese (ja)
Inventor
Toshimasa Saito
Morio Abe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7640678A priority Critical patent/JPS554509A/en
Publication of JPS554509A publication Critical patent/JPS554509A/en
Pending legal-status Critical Current

Links

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  • Sampling And Sample Adjustment (AREA)

Abstract

PURPOSE: To improve the rate of exhaust from sample bottles and reduce exhaust time by so adjusting the flow of exhaust gas that it does not become molecular flow in the initial period.
CONSTITUTION: Valves V1 thru V3, V7 are closed, an exhaust valve V4 and valve V6 are opened and a sample bottle 1 is exhausted by a vacuum pump 4 through an injection needle 2 plunged into its rubber cap 3. At this time, a vacuum gauge 6 is monitored and a leak valve V5 is so regulated that the degree of vacuum in the exhaust pipe 5 does not cause the flow of the exhaust gas to become molecular flow. After the degree of vacuum in the bottle 1 reaches the specified value, the valve V5 is closed and further upon arriving of the degree of vacuum at a desired value, the valves 4, 7 are closed and the pump 4 is stopped. Next, the sample valve V1 and suction valve V2 are opened and the sample gas is sucked from a sample container 10 by a suction pump 9, by which the inside of the sample pipe 7 and suction pipe 8 is substituted by fresh sample gas. Next, the valve V2 is closed and the pump 9 is stopped, after which the sampling valve V3 is opened, through which the sample gas is drawn into the bottle 1. Thereafter, the valves V3, V1 are closed and the needle 2 is pulled from the bottle 1.
COPYRIGHT: (C)1980,JPO&Japio
JP7640678A 1978-06-26 1978-06-26 Sample drawing method Pending JPS554509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7640678A JPS554509A (en) 1978-06-26 1978-06-26 Sample drawing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7640678A JPS554509A (en) 1978-06-26 1978-06-26 Sample drawing method

Publications (1)

Publication Number Publication Date
JPS554509A true JPS554509A (en) 1980-01-14

Family

ID=13604366

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7640678A Pending JPS554509A (en) 1978-06-26 1978-06-26 Sample drawing method

Country Status (1)

Country Link
JP (1) JPS554509A (en)

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