WO2006082915A1 - 風防付き電子天びん - Google Patents
風防付き電子天びん Download PDFInfo
- Publication number
- WO2006082915A1 WO2006082915A1 PCT/JP2006/301837 JP2006301837W WO2006082915A1 WO 2006082915 A1 WO2006082915 A1 WO 2006082915A1 JP 2006301837 W JP2006301837 W JP 2006301837W WO 2006082915 A1 WO2006082915 A1 WO 2006082915A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- door
- time
- convection
- mode
- electronic balance
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/30—Means for preventing contamination by dust
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/28—Frames, Housings
- G01G21/286—Frames, Housings with windshields
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/48—Temperature-compensating arrangements
Definitions
- the present invention relates to an electronic balance with a windshield that prevents the influence of convection and the like in a measurement environment.
- the amount of force removal may be coarser than the accuracy of the balance, but it is necessary to shorten the response time.
- the measurement data obtained every moment in a predetermined time corresponding to the response time is averaged and displayed.
- the measurement data is averaged.
- the predetermined time to be set is whether to increase the force that the user simply shortens sensuously.
- such an electronic balance has a weighing chamber in which a weighing pan is surrounded by a windshield, but the minimum display is especially 0. Olmg and 0.
- analytical balances that measure a small amount of OOlmg, convection may occur in the windshield after the door is closed due to the opening and closing of the windshield door.
- Patent Document 1 JP-A-10-19642
- Patent Document 2 JP 2003-156386 A
- the user simply switches sensuously based only on the time required for averaging required for each measurement mode, and the windshield in the open / closed state of the door. Even the time that can eliminate the influence of the convection inside was not taken into account, and stable measurement results could not be obtained.
- the main factors that make measurement unstable when the door is closed are vibrations at the installation site and a slight wind flowing through the gap in the balance. The main cause of instability is the wind near the weighing pan that is generated when the sample is removed.
- This convection becomes a force that lifts and lowers the weighing pan, and the measurement result obtained changes depending on the change in the force.
- the present invention provides a windshield-equipped electronic balance that can obtain stable measurement results in both the force removal mode and the normal mode, or can eliminate the influence of convection in the windshield. It is.
- the present invention has a draft shield with an openable / closable door surrounding a weighing pan, averages measurement data over a predetermined response time, and obtains a weighing value based on the averaged measurement data.
- door opening / closing detection means that detects the opening and closing of the door, and a predetermined response time when the door is open is relatively short. It is characterized by comprising mode switching means for switching between the normal mode and the relatively long mode.
- the door open / close detection means detects the door open state
- the measured data is averaged with a short response time and the weighing value is displayed.
- the measurement data is averaged over a relatively long response time and the weighing value is displayed.
- each response time for averaging the measurement data in the normal mode and the weighing mode differs depending on at least the open state and the closed state of the door. It is also included in the present invention that a time for eliminating the above is set.
- the present invention has a draft shield with an openable / closable door surrounding the weighing pan, and averages measurement data with a predetermined response time, based on it!
- the door opening / closing detection means for detecting the opening / closing of the door
- the convection time for measuring and storing the convection time until the fluctuation of the force measurement data falls within a predetermined range by closing the door.
- a measurement mode and a normal measurement mode in which the measured data is averaged over a predetermined response time after the sample is placed on the weighing pan and the door is closed and the stored convection time elapses to obtain the weighed value. It is characterized by that.
- a door opening / closing mechanism that opens and closes the door when the trigger signal is generated to execute the convection time measurement mode.
- the electronic balance with a draft shield provided by the present invention averages measurement data with response times suitable for both the measurement mode and the normal measurement mode, so that stable measurement results can be obtained. As a result, there is no need to wait more than necessary before reading the measurement result, and work efficiency is improved. In addition, the influence on the measurement results due to convection in the draft shield can be eliminated.
- the electronic balance with a windshield provided by the present invention can recognize in advance the time when the influence of the convection that occurs after the windshield door is closed is eliminated. Since the weighing value is displayed without waiting for the time until the influence disappears, the balance with the draft shield that combines the accuracy of the weighing value and the work efficiency can be provided.
- FIG. 1 is a schematic outline view of an electronic balance with a draft shield according to the present invention.
- FIG. 2 is a schematic configuration diagram of an electronic balance with a draft shield according to the present invention.
- FIG. 3 is a diagram showing the processing function of the electronic balance with a draft shield according to the present invention.
- FIG. 4 is a flowchart showing the processing of the first embodiment of the electronic balance with a draft shield according to the present invention.
- FIG. 5 is a flowchart showing the processing of the second embodiment of the electronic balance with a draft shield according to the present invention.
- FIGS. Fig. 1 is a schematic outline view of an electronic balance with a draft shield according to the present invention
- Fig. 2 is a schematic block diagram of an electronic balance with a draft shield according to the present invention
- Fig. 3 is a block diagram of processing functions of an electronic balance with a draft shield according to the present invention
- Fig. 4 is a book. It is a flowchart of a process of the electronic balance with a windshield by invention.
- a schematic configuration of the electronic balance with windshield will be described with reference to FIGS. 1 and 2.
- a weighing pan 53 provided on the load detection unit 1 and on which a sample is placed is accommodated in the windshield 51.
- the windshield 51 is provided with a door 52 and a door opening / closing detection sensor 3 for detecting the opening / closing of the door 52.
- 6 is a display for displaying the weighing value.
- the load detection unit 1 and the door open / close detection sensor 3 are connected to the processing device 2, and are connected to the processing device 2 such as a key switch, an external input device such as a personal computer or an external keyboard.
- the response time in each state when the door 3 is opened / closed is input from the input device 4 and the like and stored in the storage device 5 via the processing device 2.
- the display 6 displays a weight value obtained by converting the load detected by the load detection unit 1 into a weight value.
- the measurer inputs in advance a predetermined response time from the input device 4 to the open / close state of the door 3.
- the response time required to average the measurement data optimal for each mode is obtained in advance by performing simulations in the normal mode and the force removal mode. Further, preferably, the response time is obtained in consideration of the time during which the influence of convection inherent in each mode can be eliminated.
- the input data is transferred from the input processing function 29 of the processing device 2 to the response speed setting function 28, converted into response time data in a format used for averaging processing, and the like, via the storage device input / output function 2a. And stored in the storage device 5.
- the response time can be changed as appropriate.
- response time data is passed from the response speed setting function 28 to the averaging time calculation function 27, and the state of the door 52 of the draft shield 51 is measured based on the output of the door open / close detection sensor 3. It is determined by the switching function 26, and the required response time, average number of data, etc. are calculated.
- the measurement mode switching function 26 determines that the door is open with respect to the measurement data obtained from the load data acquisition function 21 based on the output of the load detector 1, the door is opened.
- the averaging process is executed in the averaging process function 27 with the averaging time calculated based on the response time when If it is determined that the door is closed, the averaging process 22 executes the averaging process with the averaging time calculated based on the response time when the door is closed.
- the input device 4 has a function of instructing execution of the convection time measurement mode and storing the convection time measured by the processing device 2 in the storage device 5.
- the indicator 6 displays a weight value obtained by converting the load detected by the load detector 1 with a weight value, or indicates that the convection time measurement mode is being executed.
- the measurer turns on the main unit switch (input device 4) and energizes the main unit. Then, the previously stored convection time Tco is called from the storage device 5. At that time, it is also possible to display information on the operating environment such as the previous date and time, temperature, humidity, installation location, etc. at the same time, and whether or not the user should remeasure the convection time based on such information Can also be determined.
- the convection time measurement mode when the convection time measurement mode is selected, first, the door 52 of the windshield 51 is opened for a time necessary for placing the sample during normal measurement, and then the door 52 is closed. Immediately after closing door 52, the convection time measurement timer is counted up to measure the time. At the same time, load changes due to convection are measured while monitoring the balance measurement data.
- the door 52 of the windshield 51 is opened, the sample to be measured is placed on the weighing pan 53, and the door 52 is closed.
- the convection time measurement timer starts counting up immediately after the door 52 is closed until the elapsed time from the start of measurement reaches the convection time Tco read immediately after energization, that is, the load change due to convection is settled. Until the measurement data is averaged.
- the measurement data is averaged and the weighing value is displayed.
- the weighing value variation factor due to the measurement environment including convection is removed and the weighing value is stable, the readable mark is lit, so the user reads the weighing value and completes the measurement.
- the weighing value is not stable !, the readable mark is not lit, and a series of processes from counting up by the convection time measurement timer is continued.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Measurement Of Unknown Time Intervals (AREA)
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800014084A CN101080616B (zh) | 2005-02-04 | 2006-02-03 | 带有风挡的电子秤 |
US11/815,525 US7544903B2 (en) | 2005-02-04 | 2006-02-03 | Electronic balance with windshield |
EP06712980.9A EP1857788B1 (en) | 2005-02-04 | 2006-02-03 | Electronic balance with windshield |
JP2007501639A JP4075965B2 (ja) | 2005-02-04 | 2006-02-03 | 風防付き電子天びん |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-029839 | 2005-02-04 | ||
JP2005029839 | 2005-02-04 | ||
JP2005-029838 | 2005-02-04 | ||
JP2005029838 | 2005-02-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006082915A1 true WO2006082915A1 (ja) | 2006-08-10 |
Family
ID=36777297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/301837 WO2006082915A1 (ja) | 2005-02-04 | 2006-02-03 | 風防付き電子天びん |
Country Status (5)
Country | Link |
---|---|
US (1) | US7544903B2 (ja) |
EP (1) | EP1857788B1 (ja) |
JP (1) | JP4075965B2 (ja) |
CN (1) | CN101080616B (ja) |
WO (1) | WO2006082915A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2009016713A1 (ja) * | 2007-07-30 | 2010-10-07 | 株式会社島津製作所 | 電子天秤 |
JP2020134452A (ja) * | 2019-02-25 | 2020-08-31 | 株式会社島津製作所 | 電子天びん |
WO2022138124A1 (ja) * | 2020-12-25 | 2022-06-30 | 株式会社 エー・アンド・デイ | 天びんの計量性能確認方法およびそのための天びん |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101137893B (zh) * | 2005-04-25 | 2011-07-27 | 株式会社岛津制作所 | 电子天平 |
DE102011056400B3 (de) * | 2011-12-14 | 2013-05-29 | Sartorius Weighing Technology Gmbh | Lagerung für eine Seitenscheibe einer Waage, Baugruppe für einen Windschutz einer Waage sowie Verfahren zur Demontage einer Seitenscheibe einer solchen Baugruppe |
CN110779602A (zh) * | 2018-07-30 | 2020-02-11 | 南京溯源信息技术有限公司 | 一种带地址码称重模块的实现方法 |
JP7008386B2 (ja) * | 2018-12-19 | 2022-01-25 | 株式会社エー・アンド・デイ | 電子天びん |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0247460Y2 (ja) * | 1984-06-25 | 1990-12-13 | ||
JPH0523373B2 (ja) * | 1985-03-18 | 1993-04-02 | Shimadzu Corp |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH544294A (de) * | 1972-06-27 | 1973-11-15 | Mettler Instrumente Ag | Elektrische Waage |
DE2718769C2 (de) * | 1977-04-27 | 1985-02-07 | Sartorius GmbH, 3400 Göttingen | Waage mit Digitalanzeige |
CH612503A5 (ja) * | 1977-05-13 | 1979-07-31 | Mettler Instrumente Ag | |
JPS6011119A (ja) * | 1983-06-30 | 1985-01-21 | Shimadzu Corp | 電子天びん |
JPS61195312A (ja) * | 1985-02-25 | 1986-08-29 | Shimadzu Corp | 電子天びん |
DE3919870C1 (ja) * | 1989-06-19 | 1990-06-21 | Sartorius Gmbh, 3400 Goettingen, De | |
CH682518A5 (de) * | 1991-07-09 | 1993-09-30 | Mettler Toledo Ag | Elektronische Waage mit einer Einrichtung zur Stillstandskontrolle. |
JPH1019642A (ja) | 1996-06-27 | 1998-01-23 | Shimadzu Corp | 電子天びん |
DE19850416C1 (de) * | 1998-11-02 | 2000-05-11 | Sartorius Gmbh | Waage mit motorisch betätigtem Windschutz |
DE19948754C2 (de) * | 1999-10-09 | 2001-09-13 | Sartorius Gmbh | Waage mit motorisch betätigbarem Windschutz |
DE20004005U1 (de) * | 2000-03-02 | 2001-07-12 | Sartorius Gmbh | Analysenwaage mit angebauter Anzeige- und Bedieneinheit |
JP3788327B2 (ja) | 2001-11-26 | 2006-06-21 | 株式会社島津製作所 | 電子天びん |
-
2006
- 2006-02-03 EP EP06712980.9A patent/EP1857788B1/en not_active Expired - Fee Related
- 2006-02-03 CN CN2006800014084A patent/CN101080616B/zh not_active Expired - Fee Related
- 2006-02-03 WO PCT/JP2006/301837 patent/WO2006082915A1/ja active Application Filing
- 2006-02-03 US US11/815,525 patent/US7544903B2/en not_active Expired - Fee Related
- 2006-02-03 JP JP2007501639A patent/JP4075965B2/ja not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0247460Y2 (ja) * | 1984-06-25 | 1990-12-13 | ||
JPH0523373B2 (ja) * | 1985-03-18 | 1993-04-02 | Shimadzu Corp |
Non-Patent Citations (1)
Title |
---|
See also references of EP1857788A4 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2009016713A1 (ja) * | 2007-07-30 | 2010-10-07 | 株式会社島津製作所 | 電子天秤 |
JP4770925B2 (ja) * | 2007-07-30 | 2011-09-14 | 株式会社島津製作所 | 電子天秤 |
US8355889B2 (en) | 2007-07-30 | 2013-01-15 | Shimadzu Corporation | Electronic balance |
JP2020134452A (ja) * | 2019-02-25 | 2020-08-31 | 株式会社島津製作所 | 電子天びん |
JP7099363B2 (ja) | 2019-02-25 | 2022-07-12 | 株式会社島津製作所 | 電子天びん |
WO2022138124A1 (ja) * | 2020-12-25 | 2022-06-30 | 株式会社 エー・アンド・デイ | 天びんの計量性能確認方法およびそのための天びん |
Also Published As
Publication number | Publication date |
---|---|
CN101080616A (zh) | 2007-11-28 |
US20090020341A1 (en) | 2009-01-22 |
JP4075965B2 (ja) | 2008-04-16 |
EP1857788B1 (en) | 2015-09-16 |
EP1857788A1 (en) | 2007-11-21 |
CN101080616B (zh) | 2011-04-06 |
JPWO2006082915A1 (ja) | 2008-06-26 |
US7544903B2 (en) | 2009-06-09 |
EP1857788A4 (en) | 2011-04-06 |
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