CN107664526B - 具有组合电容和电导的流体液位传感器 - Google Patents

具有组合电容和电导的流体液位传感器 Download PDF

Info

Publication number
CN107664526B
CN107664526B CN201710523961.4A CN201710523961A CN107664526B CN 107664526 B CN107664526 B CN 107664526B CN 201710523961 A CN201710523961 A CN 201710523961A CN 107664526 B CN107664526 B CN 107664526B
Authority
CN
China
Prior art keywords
fluid
electrode
signal
drive
electrodes
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.)
Active
Application number
CN201710523961.4A
Other languages
English (en)
Chinese (zh)
Other versions
CN107664526A (zh
Inventor
D·L·克尼里姆
S·R·斯洛托
B·T·韦默
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.)
Xerox Corp
Original Assignee
Xerox 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 Xerox Corp filed Critical Xerox Corp
Publication of CN107664526A publication Critical patent/CN107664526A/zh
Application granted granted Critical
Publication of CN107664526B publication Critical patent/CN107664526B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17566—Ink level or ink residue control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/07—Ink jet characterised by jet control
    • B41J2/125—Sensors, e.g. deflection sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/0451—Control methods or devices therefor, e.g. driver circuits, control circuits for detecting failure, e.g. clogging, malfunctioning actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04555—Control methods or devices therefor, e.g. driver circuits, control circuits detecting current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17513—Inner structure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
    • G01F23/241—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid for discrete levels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
    • G01F23/265—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors for discrete levels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
    • G01F23/266—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors measuring circuits therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17566—Ink level or ink residue control
    • B41J2002/17579—Measuring electrical impedance for ink level indication
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Ink Jet (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
CN201710523961.4A 2016-07-27 2017-06-30 具有组合电容和电导的流体液位传感器 Active CN107664526B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/220686 2016-07-27
US15/220,686 US9789697B1 (en) 2016-07-27 2016-07-27 Fluid level sensor with combined capacitance and conductance

Publications (2)

Publication Number Publication Date
CN107664526A CN107664526A (zh) 2018-02-06
CN107664526B true CN107664526B (zh) 2021-04-13

Family

ID=60022864

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710523961.4A Active CN107664526B (zh) 2016-07-27 2017-06-30 具有组合电容和电导的流体液位传感器

Country Status (4)

Country Link
US (1) US9789697B1 (https=)
JP (1) JP6800102B2 (https=)
KR (1) KR102245593B1 (https=)
CN (1) CN107664526B (https=)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020106699A1 (en) 2018-11-20 2020-05-28 Carrier Corporation Sensing of a water level in refrigerated cabinets
MX2021006229A (es) 2018-12-03 2021-08-11 Hewlett Packard Development Co Conjunto de circuitos logicos.
US10894423B2 (en) 2018-12-03 2021-01-19 Hewlett-Packard Development Company, L.P. Logic circuitry
CA3113998C (en) 2018-12-03 2023-06-20 Hewlett-Packard Development Company, L.P. Logic circuitry
US11338586B2 (en) 2018-12-03 2022-05-24 Hewlett-Packard Development Company, L.P. Logic circuitry
CA3120975A1 (en) 2018-12-03 2020-06-11 Hewlett-Packard Development Company, L.P. Logic circuitry
US20210221122A1 (en) 2018-12-03 2021-07-22 Hewlett-Packard Development Company, L.P. Logic circuitry package
AU2018451612B2 (en) 2018-12-03 2022-09-08 Hewlett-Packard Development Company, L.P. Logic circuitry
CN113165385B (zh) 2018-12-03 2022-10-14 惠普发展公司，有限责任合伙企业 逻辑电路系统
WO2020117193A1 (en) 2018-12-03 2020-06-11 Hewlett-Packard Development Company, L.P. Logic circuitry
US20210216491A1 (en) 2018-12-03 2021-07-15 Hewlett-Packard Development Company, L.P. Logic Circuitry
US11407229B2 (en) 2019-10-25 2022-08-09 Hewlett-Packard Development Company, L.P. Logic circuitry package
DE102020200866A1 (de) 2020-01-24 2021-07-29 Vega Grieshaber Kg Füllstandmesssonde zur gleichzeitigen kapazitiven und konduktiven Füllstandmessung
WO2021154217A1 (en) 2020-01-28 2021-08-05 Hewlett-Packard Development Company, L.P. Composite electrode fluid level sensing
WO2021221678A1 (en) 2020-04-30 2021-11-04 Hewlett-Packard Development Company, L.P. Logic circuitry package for print apparatus
DE102021101055A1 (de) * 2021-01-19 2022-07-21 Röchling Automotive Se & Co.Kg Extrudierter Fluidsensor zur impedanzbasierten Erfassung einer Menge oder einer Qualität eines den Sensor umgebenden Fluids
JP7669156B2 (ja) * 2021-02-24 2025-04-28 キヤノン株式会社 画像記録装置
JP2024121666A (ja) * 2023-02-27 2024-09-06 セイコーエプソン株式会社 液体吐出装置及び液体収容装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5051759A (en) * 1989-01-13 1991-09-24 Canon Kabushiki Kaisha Ink jet cartridge and ink tank
US6209980B1 (en) * 1996-06-25 2001-04-03 Seiko Epson Corporation Ink cartridge for printer having electrodes
CN1488509A (zh) * 2002-07-24 2004-04-14 ���ṫ˾ 液体检测装置、液体量检测装置及其检测方法
CN101112820A (zh) * 2006-12-20 2008-01-30 珠海天威技术开发有限公司 检测电路及墨盒
US7383727B2 (en) * 1999-05-20 2008-06-10 Seiko Epson Corporation Liquid cotainer having a liquid consumption detecting device therein
CN101269580A (zh) * 2007-03-21 2008-09-24 三星电子株式会社 喷墨图像形成设备的墨水水位检测设备和控制其的方法
CN101422987A (zh) * 2008-12-08 2009-05-06 吴学谦 能检测物品剩余量的容器及检测装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4947689A (en) * 1989-01-13 1990-08-14 Hochstein Peter A Capacitive liquid sensor
CA2128676C (en) * 1993-09-08 1997-12-23 John D. Sotack Capacitive sensor
US6155664A (en) * 1998-06-19 2000-12-05 Lexmark International, Inc. Off-carrier inkjet print supply with memory
JP2001116686A (ja) 1999-10-18 2001-04-27 Nec Niigata Ltd トナー濃度検知センサ
JP3613192B2 (ja) * 2001-03-28 2005-01-26 セイコーエプソン株式会社 液量監視装置及びこれを備えた液体消費装置
JP2003291367A (ja) * 2002-04-02 2003-10-14 Sony Corp 液体残量表示装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5051759A (en) * 1989-01-13 1991-09-24 Canon Kabushiki Kaisha Ink jet cartridge and ink tank
US6209980B1 (en) * 1996-06-25 2001-04-03 Seiko Epson Corporation Ink cartridge for printer having electrodes
US7383727B2 (en) * 1999-05-20 2008-06-10 Seiko Epson Corporation Liquid cotainer having a liquid consumption detecting device therein
CN1488509A (zh) * 2002-07-24 2004-04-14 ���ṫ˾ 液体检测装置、液体量检测装置及其检测方法
CN101112820A (zh) * 2006-12-20 2008-01-30 珠海天威技术开发有限公司 检测电路及墨盒
CN101269580A (zh) * 2007-03-21 2008-09-24 三星电子株式会社 喷墨图像形成设备的墨水水位检测设备和控制其的方法
CN101422987A (zh) * 2008-12-08 2009-05-06 吴学谦 能检测物品剩余量的容器及检测装置

Also Published As

Publication number Publication date
KR102245593B1 (ko) 2021-04-27
JP2018017726A (ja) 2018-02-01
CN107664526A (zh) 2018-02-06
KR20180012695A (ko) 2018-02-06
US9789697B1 (en) 2017-10-17
JP6800102B2 (ja) 2020-12-16

Similar Documents

Publication Publication Date Title
CN107664526B (zh) 具有组合电容和电导的流体液位传感器
CN106687777B (zh) 用于监测容器中介质的填充水平的方法和装置
US7963164B2 (en) Capacitive sensor assembly for determining level of fluent materials
US10422680B2 (en) Method for monitoring at least one media-specific property of a medium
US10473498B2 (en) Electromagnetic flow meter including a function of measuring electrical conductivity of a fluid
US5017909A (en) Capacitive liquid level sensor
CA2742228C (en) Apparatus for determining and/or monitoring a process variable of a medium
US9146145B2 (en) Apparatus for determining and/or monitoring a process variable
US10982988B2 (en) Sensor adapter
EP2663843A1 (en) Device for measuring fluid level in a container
CN105026899A (zh) 用于监视容器中的介质的设定料位的方法和设备
US11239651B2 (en) Electronic temperature switch
CN104634385B (zh) 物位与温度感测装置
US20070076023A1 (en) Ink level sensor and method of use
US9733116B2 (en) Fill level measurement system
US10895488B2 (en) Coupling element for a capacitive fill level measuring device
US11199434B2 (en) Dual polarity mutual capacitive liquid sensing
CN110869720A (zh) 电容式测量方法和料位测量设备
CA1277509C (en) Gas monitor circuits
US20070240506A1 (en) Capacitive liquid level sensor
US20070000320A1 (en) Bin level monitor
US20210123785A1 (en) Probe unit
CN111623808A (zh) 附连到能够容纳物质的容器的电容传感器
US7401513B2 (en) Electronic method and system for detection of conducting or dielectric medium with dielectric constant higher than that of air
US20100194383A1 (en) Apparatus for determining and/or monitoring a process variable

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant