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JPS6488361A - Gradient device for liquid chromatograph - Google Patents

Gradient device for liquid chromatograph

Info

Publication number
JPS6488361A
JPS6488361A JP62248482A JP24848287A JPS6488361A JP S6488361 A JPS6488361 A JP S6488361A JP 62248482 A JP62248482 A JP 62248482A JP 24848287 A JP24848287 A JP 24848287A JP S6488361 A JPS6488361 A JP S6488361A
Authority
JP
Japan
Prior art keywords
pumps
liquid feed
pressure sensor
outlets
differences
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
JP62248482A
Other languages
Japanese (ja)
Inventor
Akira Nakamoto
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.)
Shimadzu Corp
Original Assignee
Shimadzu Corp
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 Shimadzu Corp filed Critical Shimadzu Corp
Priority to JP62248482A priority Critical patent/JPS6488361A/en
Publication of JPS6488361A publication Critical patent/JPS6488361A/en
Pending legal-status Critical Current

Links

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  • Treatment Of Liquids With Adsorbents In General (AREA)

Abstract

PURPOSE:To check the liquid feed states of respective liquid feed pumps at all times by providing the pumps for each of plural kinds of solvents, detecting the discharge pressures of the respective liquid feed pumps by a 1st pressure sensor, detecting the pressure at the confluent point of resistance pipes by the 2nd pressure sensor and outputting the signal differences between the 1st and 2nd sensors. CONSTITUTION:The pumps 2a-2c are provided for the respective solvents 1a-1c. The pressure sensor 4a-4c are built between pump heads 3a-3c and outlets 5a-5c of the pumps in the respective pumps 2a-2c. The resistance pipes 6a-6c are connected to the outlets 5a-5c and the outlets of the pipes 6a-6c are joined at the confluent point 7. The pressure sensor 8 is provided between the confluent point 7 and a mixer 9. The differences Sa-Sm, Sb-Sm, Sc-Sm between the output signals Sa-Sc of the sensors 4a-4c and the output signal Sm of the sensor 8 are amplified to adequate values which are outputted. The liquid feed states of the respective pumps are checked by the differences between these output signals.
JP62248482A 1987-09-30 1987-09-30 Gradient device for liquid chromatograph Pending JPS6488361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62248482A JPS6488361A (en) 1987-09-30 1987-09-30 Gradient device for liquid chromatograph

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62248482A JPS6488361A (en) 1987-09-30 1987-09-30 Gradient device for liquid chromatograph

Publications (1)

Publication Number Publication Date
JPS6488361A true JPS6488361A (en) 1989-04-03

Family

ID=17178813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62248482A Pending JPS6488361A (en) 1987-09-30 1987-09-30 Gradient device for liquid chromatograph

Country Status (1)

Country Link
JP (1) JPS6488361A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19711292C2 (en) * 1996-03-29 1999-11-18 Hitachi Ltd Liquid chromatograph
WO2003079000A1 (en) * 2002-03-18 2003-09-25 Hitachi High-Technologies Corporation Gradient liquid feed pump system, and liquid chromatograph
JP2008500556A (en) * 2004-05-21 2008-01-10 ウオーターズ・インベストメンツ・リミテツド Closed loop flow control of HPLC constant flow pump to enable low flow operation
CN102866217A (en) * 2011-07-05 2013-01-09 株式会社岛津制作所 Low-pressure gradient device
CN103512985A (en) * 2012-06-21 2014-01-15 株式会社岛津制作所 Mobile phase delivery device and liquid chromatograph
JP2017058148A (en) * 2015-09-14 2017-03-23 株式会社島津製作所 Liquid feeding device and liquid chromatograph

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19711292C2 (en) * 1996-03-29 1999-11-18 Hitachi Ltd Liquid chromatograph
WO2003079000A1 (en) * 2002-03-18 2003-09-25 Hitachi High-Technologies Corporation Gradient liquid feed pump system, and liquid chromatograph
US7163379B2 (en) 2002-03-18 2007-01-16 Hitachi High-Technologies Corporation Gradient liquid feed pump system, and liquid chromatograph
JP2008500556A (en) * 2004-05-21 2008-01-10 ウオーターズ・インベストメンツ・リミテツド Closed loop flow control of HPLC constant flow pump to enable low flow operation
US8679333B2 (en) 2004-05-21 2014-03-25 Waters Technologies Corporation Closed loop flow control of a HPLC constant flow pump to enable low-flow operation
US9393504B2 (en) 2004-05-21 2016-07-19 Waters Technologies Corporation Closed loop flow control of a HPLC constant flow pump to enable low-flow operation
CN102866217A (en) * 2011-07-05 2013-01-09 株式会社岛津制作所 Low-pressure gradient device
CN103512985A (en) * 2012-06-21 2014-01-15 株式会社岛津制作所 Mobile phase delivery device and liquid chromatograph
JP2014006065A (en) * 2012-06-21 2014-01-16 Shimadzu Corp Moving phase liquid feed device and liquid chromatograph
CN103512985B (en) * 2012-06-21 2016-01-06 株式会社岛津制作所 Mobile phase liquid feeding device and liquid chromatograph
JP2017058148A (en) * 2015-09-14 2017-03-23 株式会社島津製作所 Liquid feeding device and liquid chromatograph

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