JPH03113365A - Solvent concentration setting device for liquid chromatograph - Google Patents

Solvent concentration setting device for liquid chromatograph

Info

Publication number
JPH03113365A
JPH03113365A JP25143389A JP25143389A JPH03113365A JP H03113365 A JPH03113365 A JP H03113365A JP 25143389 A JP25143389 A JP 25143389A JP 25143389 A JP25143389 A JP 25143389A JP H03113365 A JPH03113365 A JP H03113365A
Authority
JP
Japan
Prior art keywords
concentration
solvent
input
timer
solvents
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
JP25143389A
Other languages
Japanese (ja)
Inventor
Minoru Kono
穣 河野
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 JP25143389A priority Critical patent/JPH03113365A/en
Publication of JPH03113365A publication Critical patent/JPH03113365A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent a composition ratio which is different from a target value from being generated when the concentration of a solvent is varied by clocking a specific time after the concentration of one solvent is set and inputted by an input means. CONSTITUTION:Assuming that respective solvents A - D having concentration values a1 - d1 are mixed and fed to a column, new concentration b2 is set and inputted from an input part 7 when the solvents B and C are varied in concentration from b1 and c1 to b2 and c2, and then the concentration b2 is stored temporarily in a RAM 3. Then a timer 6 is set and starts counting a wait time. If concentration c2 is set and inputted from the input part 7 before the timer 6 enters a time-up state, the concentration c2 is stored in the RAM 3 together with the concentration b2 which is set previously. Further, the timer 6 is set again and starts counting a wait time. When the timer 6 enters a time-up state, the concentration values b2 and c2 stored in the RAM 3 are transferred to a solenoid valve control circuit 5. The circuit 5 varies the opening quantities of solenoid valves Va - Vc to vary the concentration values of the solvents A - C to a2 - c2. At this time, a composition ratio which is not the target value is not generated.

Description

【発明の詳細な説明】 (イ)産業上の利用分野 この発明は、液体クロマトグラフの内、グラジェント溶
出装置に適用される溶媒濃度設定装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a solvent concentration setting device applied to a gradient elution device among liquid chromatographs.

(ロ)従来の技術 液体クロマトグラフのグラジェント溶出装置は、複数の
溶媒を混合し、移動相としてカラムへ送り、分析の進行
に伴い溶媒の組成を変化させていくものであり、溶媒の
濃度組成を設定するための溶媒濃度設定装置が備えられ
ている。この溶媒濃度設定装置は、溶媒の濃度を設定入
力する入力部と各溶媒の流量を制御する電磁弁と、入力
部で設定入力された濃度に基づいてこれら電磁弁の開口
量を制御する電磁弁制御回路とを備えている。
(b) Conventional technology Gradient elution devices for liquid chromatographs mix multiple solvents and send them to the column as a mobile phase, changing the composition of the solvent as the analysis progresses. A solvent concentration setting device is provided for setting the composition. This solvent concentration setting device consists of an input section for setting and inputting the concentration of the solvent, a solenoid valve that controls the flow rate of each solvent, and a solenoid valve that controls the opening amount of these solenoid valves based on the concentration input and set at the input section. It is equipped with a control circuit.

例えば4種類の溶媒A、B’、C,Dが用いられる場合
には、溶媒B、C,Dの濃度b(%)、c(%)、d(
%)を入力部で設定入力する。溶媒への濃度a(%)は
、100−b−c−dに自と定まる。
For example, when four types of solvents A, B', C, and D are used, the concentrations of solvents B, C, and D are b (%), c (%), and d (
%) in the input section. The concentration a (%) in the solvent is determined to be 100-b-c-d.

(ハ)発明が解決しようとする課題 上記溶媒濃度設定装置では、入力部で設定入力された濃
度は、直ちに流量の制御に反映される。
(c) Problems to be Solved by the Invention In the above-mentioned solvent concentration setting device, the concentration set and input at the input section is immediately reflected in the control of the flow rate.

例えば、溶媒B、Cの濃度す、cをそれぞれb゛Coに
変更する場合を考え、bl   c″の順で入力部から
設定入力するものとする。boを設定入力後、すみやか
にCoを設定入力したとしても、boの設定入力と、C
oの設定入力との間のほんの短い時間、目的とする組成
比とは異なる溶媒、すなt)ちASB、C,、D(7)
濃度が、100−b’ −c−dSb’ 、c、dの溶
媒がカラムへ送液されることとなり、測定結果として得
られるクロマトグラムに影響を及ぼすおそれがあった。
For example, suppose you want to change the concentrations of solvents B, C, and c to b゛Co, respectively, and input the settings from the input section in the order of bl c''. After inputting the settings for bo, immediately set Co. Even if input, bo setting input and C
A very short period of time between the setting input of o, a solvent different from the desired composition ratio, i.e. ASB, C,, D (7)
A solvent having a concentration of 100-b'-c-dSb', c, and d was sent to the column, which could affect the chromatogram obtained as a measurement result.

この発明は、上記に鑑みなされたものであり、溶媒の濃
度を変更する際に、目的とは異なる組成比が生じない、
液体クロマトグラフの溶媒濃度設定装置の捉供を目的と
している。
This invention was made in view of the above, and when changing the concentration of the solvent, a composition ratio different from the intended one does not occur.
It is intended to be used as a capture device for liquid chromatograph solvent concentration setting devices.

(ニ)課題を解決するための手段 上記課題を解決するため、この発明の液体クロマトグラ
フの溶媒濃度設定装置は、複数の溶媒の濃度を設定入力
する入力手段と、この入力手段で設定された濃度に基づ
き各溶媒の流量を制御する流量制御手段とを備えてなる
ものにおいて、前記入力手段で1つの溶媒の濃度が設定
入力されてがら、所定時間を計時する計時手段と、この
計時手段が作動している間、設定入力された濃度を記憶
する濃度記憶手段と、前記計時手段が計時を終了した時
、この濃度記憶手段に記憶されている濃度を前記流量制
御手段に転送する濃度転送手段とを備えたものである。
(d) Means for Solving the Problems In order to solve the above problems, the solvent concentration setting device for a liquid chromatograph of the present invention includes an input means for setting and inputting the concentrations of a plurality of solvents, and a method for setting and inputting the concentrations of a plurality of solvents. and a flow rate control means for controlling the flow rate of each solvent based on the concentration, the clocking means for timing a predetermined time while the concentration of one solvent is being set and inputted by the input means; Concentration storage means for storing the input concentration during operation, and concentration transfer means for transmitting the concentration stored in the concentration storage means to the flow rate control means when the timekeeping means finishes timing. It is equipped with the following.

(ホ)作用 この発明の液体クロマトグラフの溶媒濃度設定装置では
、1つの溶媒の濃度を設定入力してから、この設定入力
された濃度が流量制御に反映されるまで、所定のいわば
待ち時間がとられている。この持ち時間の間に、同時に
変更したい他の溶媒の濃度を設定入力できる。こうして
設定入力された濃度は、濃度記憶手段に記憶され、待ち
時間終了後、まとめて流量制御手段へ転送される。従っ
て、溶媒の組成比を目的とする値に直接変更することが
でき、間に目的とは異なる組成比を生じさせることはな
い。
(E) Function In the liquid chromatograph solvent concentration setting device of the present invention, there is a predetermined waiting time from when the concentration of one solvent is set and input until the input concentration is reflected in the flow rate control. It is taken. During this time, you can set and input the concentration of other solvents that you want to change at the same time. The concentrations thus set and input are stored in the concentration storage means, and after the waiting time is over, they are transferred all together to the flow rate control means. Therefore, the composition ratio of the solvent can be directly changed to the desired value, without creating a composition ratio different from the intended value.

(へ)実施例 この発明の一実施例を図面に基づいて以下に説明する。(f) Example An embodiment of the present invention will be described below based on the drawings.

第1図は、実施例溶媒濃度設定装置の構成を説明するブ
ロック図である。CPUIには、パスライン8を介して
、ROM2、RAM3、ポンプ制御回路4、電磁弁制御
回路5、タイマ6、入力部7が接続されている。ROM
2は、CPUIの動作プログラムを格納しており、また
RAM3は、CPUIの作動領域として使用され、設定
入力された濃度も一旦ここに記憶される。
FIG. 1 is a block diagram illustrating the configuration of an example solvent concentration setting device. A ROM 2 , a RAM 3 , a pump control circuit 4 , a solenoid valve control circuit 5 , a timer 6 , and an input section 7 are connected to the CPUI via a path line 8 . ROM
2 stores an operating program for the CPU, and a RAM 3 is used as an operating area for the CPU, and the input concentration is also temporarily stored here.

ポンプ制御回路4は、吸引され、混合された溶媒を送液
するポンプ9を制御するためのもので、溶媒が設定され
た流量でカラムへ送液されるようにする。電磁弁制御回
路5は、電磁弁V、 、V、、V、、V、の開口量を調
整し、溶媒A、B、C1Dが設定された濃度で混合され
るよう、各溶媒の流量を制御する。
The pump control circuit 4 is for controlling a pump 9 that sends the sucked and mixed solvent, so that the solvent is sent to the column at a set flow rate. The solenoid valve control circuit 5 adjusts the opening amounts of the solenoid valves V, , V, , V, , V, and controls the flow rate of each solvent so that the solvents A, B, and C1D are mixed at a set concentration. do.

タイマ6は、待ち時間をカウントするためのものであり
、入力部7は、各溶媒ASB、CSDの濃度a、b、c
、d及びポンプ9の送液贋を設定入力するためのもので
、例えばキーボード等が使用される。タイマ6の待ち時
間は、入力部7で一つの溶媒濃度を設定入力してから、
他の溶媒の濃度の設定入力が十分に行えるように定めら
れる。
The timer 6 is for counting waiting time, and the input section 7 is for counting the concentrations a, b, c of each solvent ASB and CSD.
, d, and whether or not the liquid is being fed by the pump 9. For example, a keyboard or the like is used. The waiting time of the timer 6 is determined by setting and inputting one solvent concentration in the input section 7.
It is determined so that settings for the concentrations of other solvents can be input sufficiently.

次に、実施例溶媒濃度設定装置の濃度変更処理について
説明する。
Next, the concentration changing process of the example solvent concentration setting device will be explained.

今、各溶媒A、B、C,Dが、濃度a1 (=100 
 bl   Ct   d+ )、blSC1% d+
で混合され、カラムへ送液されているものとし、溶媒B
、Cの濃度をそれぞれす2、C1より、b2、c、に変
更する場合を考える。
Now, each solvent A, B, C, D has a concentration a1 (=100
bl Ct d+ ), blSC1% d+
It is assumed that the solvent B is mixed and sent to the column.
, C are changed from s2 and C1 to b2 and c, respectively.

入力部6より、新たな濃度b8を設定入力すると、第2
図(a)に示す設定入力プログラムが起動され、この濃
度す、がRAM3に一旦記憶される〔ステップ(以下S
Tという)l〕、そして、タイマ6がセットされて待ち
時間のカウントが開始される(ST2)。
When a new concentration b8 is inputted from the input section 6, the second
The setting input program shown in FIG.
T)l], and the timer 6 is set to start counting the waiting time (ST2).

タイマ6がタイムアツプするまでに、入力部6より、濃
度c、が設定入力されると、再び第2図(a)の設定入
力プログラムが起動される。そして、濃度c2が先に設
定された濃度すよと共にRAM3内に記憶される。さら
に、タイマ6が再びセットされて待ち時間のカウントが
開始される(Sr1)。
If the concentration c is input from the input unit 6 before the timer 6 times up, the setting input program shown in FIG. 2(a) is started again. Then, the density c2 is stored in the RAM 3 together with the previously set density Suyo. Furthermore, the timer 6 is set again and starts counting the waiting time (Sr1).

タイマ6がタイムアツプすると第2図(b)の転送プロ
グラムが起動され、RAM3に記憶されていた濃度bZ
、cZを電磁弁制御回路5に転送する(Sr3)。電磁
弁制御回路5は、電磁弁v1、V、、V、の開口量を変
更し、各溶媒A、B、Cの濃度をaz(=100  b
z  (:、z  d+)、bz、C2に変更する(溶
媒りの濃度d、は、そのまま)。
When the timer 6 times up, the transfer program shown in FIG. 2(b) is started and the concentration bZ stored in the RAM 3 is transferred.
, cZ to the solenoid valve control circuit 5 (Sr3). The solenoid valve control circuit 5 changes the opening amount of the solenoid valves v1, V, , V, and adjusts the concentration of each solvent A, B, C to az (=100 b
z (:, z d+), bz, change to C2 (solvent concentration d remains unchanged).

この時に、従来のように目的でない組成比、すなわちa
+’−(100bz   C+   d+ )、bz、
CI%dlが生じることはない。
At this time, unlike the conventional method, the unintended composition ratio, that is, a
+'-(100bz C+ d+), bz,
CI%dl never occurs.

なお、上記実施例では、4種の溶媒を混合する例を示し
ているが、溶媒の数はこれに限定されるものではなく適
宜設計変更可能である。
Although the above embodiment shows an example in which four types of solvents are mixed, the number of solvents is not limited to this, and the design can be changed as appropriate.

(ト)発明の詳細 な説明したように、この発明の液体クロマトグラフの溶
媒濃度設定装置は、入力手段で1つの溶媒の濃度が設定
入力されてから、所定時間を計時する計時手段と、この
計時手段が作動している間、設定入力された濃度を記憶
する濃度記憶手段と、前記計時手段が計時を終了した時
、この濃度記憶手段に記憶されている濃度を流量制御手
段に転送する濃度転送手段とを備えてなるものであり、
濃度変更時に目的とは異なる組成比を生ずることがなく
なり、分析の信頼性を向上することができる。また、1
つの溶媒濃度を設定入力してから、余裕をもって他の溶
媒濃度を設定入力できるから、操作性も向上する。
(g) As described in detail of the invention, the solvent concentration setting device for a liquid chromatograph of the present invention includes a timer for measuring a predetermined time after the concentration of one solvent is input by the input means; Concentration storage means for storing the input concentration while the timer is in operation; and concentration storage means for transferring the concentration stored in the concentration storage means to the flow rate control means when the timer finishes timing. It is equipped with a means of transfer,
When changing the concentration, a composition ratio different from the intended one will not occur, and the reliability of analysis can be improved. Also, 1
After setting and inputting one solvent concentration, it is possible to set and input other solvent concentrations with sufficient margin, which improves operability.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、この発明の一実施例に係る液体クロマトグラ
フの溶媒濃度設定装置の構成を説明するブロック図、第
2図(a)及び第2図(b)は、それぞれ同液体クロマ
トグラフの溶媒濃度設定装置における設定入力処理及び
転送処理を説明する70−図である。 1:CPU、      3 : RAM。 5:電磁弁制御回路8.6:タイマ、 7:入力部、 A−B−C−D:溶媒、 ■1 ・■ゎ ・ ■。 ・ ■4 :電磁弁。
FIG. 1 is a block diagram illustrating the configuration of a solvent concentration setting device for a liquid chromatograph according to an embodiment of the present invention, and FIGS. 2(a) and 2(b) are respectively 70 is a diagram illustrating setting input processing and transfer processing in the solvent concentration setting device. FIG. 1: CPU, 3: RAM. 5: Solenoid valve control circuit 8.6: Timer, 7: Input section, A-B-C-D: Solvent, ■1 ・■ゎ ・■.・ ■4: Solenoid valve.

Claims (1)

【特許請求の範囲】[Claims] (1)複数の溶媒の濃度を設定入力する入力手段と、こ
の入力手段で設定された濃度に基づき各溶媒の流量を制
御する流量制御手段とを備えてなる液体クロマトグラフ
の溶媒濃度設定装置において、前記入力手段で1つの溶
媒の濃度が設定入力されてから、所定時間を計時する計
時手段と、この計時手段が作動している間、設定入力さ
れた濃度を記憶する濃度記憶手段と、前記計時手段が計
時を終了した時、この濃度記憶手段に記憶されている濃
度を前記流量制御手段に転送する濃度転送手段とを備え
たことを特徴とする液体クロマトグラフの溶媒濃度設定
装置。
(1) In a solvent concentration setting device for a liquid chromatograph, comprising an input means for setting and inputting the concentrations of a plurality of solvents, and a flow rate control means for controlling the flow rate of each solvent based on the concentrations set by the input means. , a clock means for counting a predetermined time after the concentration of one solvent is set and inputted by the input means; a concentration storage means for storing the set and input concentration while the clocking means is operating; 1. A solvent concentration setting device for a liquid chromatograph, comprising: concentration transfer means for transferring the concentration stored in the concentration storage means to the flow rate control means when the time measurement means finishes timing.
JP25143389A 1989-09-27 1989-09-27 Solvent concentration setting device for liquid chromatograph Pending JPH03113365A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25143389A JPH03113365A (en) 1989-09-27 1989-09-27 Solvent concentration setting device for liquid chromatograph

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25143389A JPH03113365A (en) 1989-09-27 1989-09-27 Solvent concentration setting device for liquid chromatograph

Publications (1)

Publication Number Publication Date
JPH03113365A true JPH03113365A (en) 1991-05-14

Family

ID=17222767

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25143389A Pending JPH03113365A (en) 1989-09-27 1989-09-27 Solvent concentration setting device for liquid chromatograph

Country Status (1)

Country Link
JP (1) JPH03113365A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6860137B2 (en) * 2001-02-16 2005-03-01 Shimadzu Corporation Liquid transfer device, control method of liquid mixing ratio thereof and liquid chromatograph with liquid transfer device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6860137B2 (en) * 2001-02-16 2005-03-01 Shimadzu Corporation Liquid transfer device, control method of liquid mixing ratio thereof and liquid chromatograph with liquid transfer device

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