公开(公告)号：US20220236099A1

公开(公告)日：2022-07-28

申请号：US17615491

申请日：2020-06-04

Applicant: A&D COMPANY, LIMITED

Inventor： Haruna NOGUCHI ,  Yuji FUKAMI

IPC: G01G13/12 ,  G01G19/52 ,  G06F17/15

Abstract: Provided is a quantitative dispensing system includes a supply device for supply a weighing object, and a weighing device including a holding unit to hold the weighing object supplied from the supply device, a load sensor unit to detect a load of the weighing object supplied to the holding unit, and an arithmetic processing unit to calculate a weighed value of the weighing object from a detection result on the load and control an operation of the supply device. The arithmetic processing unit performs control to stop the supply device when a current weighed value becomes not less than a supply stop weight value calculated by subtracting a stop weighed value deviation from a supply target weight value. The stop weighed value deviation is calculated in consideration of a flow rate and a supply pressure of the weighing object and a filter setting in the weighing device.

公开(公告)号：US20210293603A1

公开(公告)日：2021-09-23

申请号：US17053231

申请日：2019-06-19

Applicant: A&D COMPANY, LIMITED

Inventor： Tomoaki HONZAWA ,  Yuji FUKAMI

IPC: G01G7/02 ,  G01G23/00

Abstract: Provided is an electronic balance that enables a user to recognize the magnitude of disturbances in real time. An electronic balance (1) whose natural frequency is known, includes a load measurement mechanism (4) configured to detect weighing data (Zn), and an arithmetic processing unit (8) configured to perform arithmetic processing by using the weighing data (Zn), wherein the arithmetic processing unit (8) extracts a vibration component (Fr) of the natural frequency from the weighing data (Zn) detected by the load measurement mechanism (4) and displays the vibration component (Fr) of the natural frequency. By using the vibration component (Fr) of the natural frequency as an index of disturbances, it becomes possible to recognize in real time the magnitude of the disturbances during weighing.

公开(公告)号：US20200094243A1

公开(公告)日：2020-03-26

申请号：US16328602

申请日：2016-09-27

Applicant: A&D COMPANY, LIMITED

Inventor： Chika ARIGA ,  Yuji FUKAMI ,  Hisanori ODA

IPC: B01L3/02

Abstract: Operability, accuracy, and safety when fitting a glass-made pipette tip to a pipette are improved. A pipette tip fitting adapter includes a hollow body having one end portion configured to serve as a tip inserting portion into which a pipette tip is inserted, and the other end portion configured to serve as a pipette inserting portion into which a pipette is inserted, and at an opening side of an inner circumferential surface of the tip inserting portion, seal portions projecting inward are formed in a circumferential direction. Accordingly, a pipette tip that is long and heavy like a glass tip can be held.

公开(公告)号：US20190226902A1

公开(公告)日：2019-07-25

申请号：US16248217

申请日：2019-01-15

Applicant: A&D COMPANY, LIMITED

Inventor： Yuji FUKAMI ,  Haruna KAWAGUCHI

IPC: G01G11/04 ,  G01G19/415 ,  G01F1/86

Abstract: Provided is a weighing apparatus with a flowmeter function includes a load sensor unit configured to detect a load of a flow rate calculation target, an A/D conversion unit configured to sequentially convert load signals from the load sensor unit into digital load data at predetermined intervals, an arithmetic processing unit configured to sequentially convert the load data into weighed values to calculate flow rate values, and a storage unit for storing the weighed values. The arithmetic processing unit calculates change amounts in weighed values and calculates a flow rate value based on a flow rate calculation cycle set based on a minimum time by which the change amounts become equal to or more than a change amount in weighed value, the change amount being calculated based on a minimum indication of weighed value and the required resolution of weighed value and satisfying a required resolution.

公开(公告)号：US20160236189A1

公开(公告)日：2016-08-18

申请号：US15024867

申请日：2013-11-12

Applicant: A&D COMPANY, LIMITED

Inventor： Naoto IZUMO ,  Yuji FUKAMI

IPC: B01L3/02

CPC classification number: B01L3/0237 ,  B01L3/021 ,  B01L3/0227 ,  B01L2200/148 ,  B01L2300/0627 ,  B01L2300/0645 ,  B01L2300/0832 ,  G01F11/022 ,  G01F11/023 ,  G01F11/027 ,  G01F13/00 ,  G01F25/0084 ,  G01G1/00 ,  G01G23/01 ,  G01N1/00

Abstract: To provide a method for calibrating a discharge volume of the pipette that enables accurate measurement of the discharge volume under arbitrary conditions, and to provide an apparatus therefor. The method including the steps of, setting a preset volume by the pipette that is actually used in a measurement (S1), sucking liquid that is actually used in the measurement into the pipette chip that is actually used in the measurement while aiming to be sucked the preset volume (S2), discharging the liquid sucked in the pipette chip onto a measuring apparatus (S3), determining an actual discharge volume of the pipette based on the weight measured (S4 to S6) and calculating a ratio between the preset volume and the actual discharge volume and correcting a sucking amount so as to bring the sucking amount to match an amount obtained by multiplying the preset volume by the ratio (S7 to S9).

Abstract translation: 提供一种用于校准移液管的排出体积的方法，其能够在任意条件下精确测量排出体积，并提供其装置。 该方法包括以下步骤：通过实际在测量中使用的移液管（S1）设定预设体积，将实际用于测量的液体吸入被测量中实际使用的移液管芯片，同时被吸引 预先设定的容积（S2），将吸移管芯吸入的液体排出到测定装置（S3）上，基于测定的重量来确定移液管的实际排出量（S4〜S6），并计算预设体积与 实际排出量和校正吸引量，以使吸引量与通过将预设体积乘以比例而获得的量相匹配（S7至S9）。