KR910700448A - 유압회로 오염도 표시장치 및 그 판정방법 - Google Patents

유압회로 오염도 표시장치 및 그 판정방법

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Publication number
KR910700448A
KR910700448A KR1019900701852A KR900701852A KR910700448A KR 910700448 A KR910700448 A KR 910700448A KR 1019900701852 A KR1019900701852 A KR 1019900701852A KR 900701852 A KR900701852 A KR 900701852A KR 910700448 A KR910700448 A KR 910700448A
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KR
South Korea
Prior art keywords
filter
circuit
hydraulic
display device
inlet
Prior art date
Application number
KR1019900701852A
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English (en)
Inventor
노부오 후지다
노부아키 나카라이
Original Assignee
가다다 데쯔야
가부시기가이샤 고마쓰 세이사꾸쇼오
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Filing date
Publication date
Priority claimed from JP63325536A external-priority patent/JPH02170049A/ja
Priority claimed from JP4408989A external-priority patent/JPH02223846A/ja
Priority claimed from JP1046988A external-priority patent/JPH02227110A/ja
Application filed by 가다다 데쯔야, 가부시기가이샤 고마쓰 세이사꾸쇼오 filed Critical 가다다 데쯔야
Publication of KR910700448A publication Critical patent/KR910700448A/ko

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B01D29/54—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
    • B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
    • B01D29/606—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by pressure measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/143—Filter condition indicators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0405—Monitoring quality of lubricant or hydraulic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
    • F16N29/04—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems enabling a warning to be given; enabling moving parts to be stopped
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06—Investigating concentration of particle suspensions
    • G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
    • G01N15/0618—Investigating concentration of particle suspensions by collecting particles on a support of the filter type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0402—Cleaning of lubricants, e.g. filters or magnets
    • F16H57/0404—Lubricant filters
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S116/00—Signals and indicators
    • Y10S116/42—Oil filter

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Quality & Reliability (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Filtration Of Liquid (AREA)

Abstract

내용 없음.

Description

유압회로 오염도 표시장치 및 그 판정방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 제1실시예를 표시하는 전체구성도.
제2도는 필터부를 표시하는 단면도.
제3도는 본 발명의 제1실시예의 플로우차아트도.

Claims (8)

  1. 유압작동유의 회로속에 설치된 필터(4) (5) (6)의 입구와 출구의 압력차가, 미리 결정된 값을 초과하면 작동하도록 설정된 센서(8) (9) (10) (11)와, 센서에서의 신호를 받아서 작동하는 표시장치(13)를 구비하고, 유압작동유 속의 오염불질에 의하여 발생시키는 필터 (4) (5) (6) (73) (76)의 눈막힘을 필터의 입구와 출구의 압력차를 검출하여 표시하는 유압회로 오염도 표시장치에 있어서, 회로속에 이과입도가 다른 2개 이상의 필터(4) (5) (6) (73) (76)를 배치하고, 각각의 필터의 입구, 출구의 압력(Pa) (pb) (Pc) (Pd)을 검출하여, 입구와 출구의 압력차가 소정치를 초과했을 때에, 초과한 곳의 표시장치(13) (81)가 작동하는 것을 특징으로 하는 유압회로 오염도 표시장치.
  2. 제1항에 있어서, 전기한 2개 이상의 필터(4) (5) (6)의 배열은 여과 입도가 큰 필터(4) (5) (6)로 부터 순서로 직렬배치하는 것을 특징으로 하는 유압회로 오염도 표시장치.
  3. 제1항에 있어서, 전기한 2개 이상의 필터(73) (76)의 배열은 유압 회로에 분류밸브(71)를 설치하여 작동유의 유량을 2분하고 병렬로 배치하는 것을 특징으로 하는 유압회로 오염도 표시장치.
  4. 제1항에 있어서, 전기한 표시장치(13) (81)에는 입구와 출구의 압력신호를 받아서 제어장치(12) (80)로 연산하여 표시하는 것을 특징으로 하는 유압회로 오염도 표시장치.
  5. 제3항에 있어서, 전기한 표시장치(81)에는 필터(73) (76)를 병렬로 배치하는 회로에 배치된 오리피스(74) (77)와, 각각의 오리피스의 입구와 출구의 압력차가 미리 결정된 값으로 도달하면 작동하도록 설정된 센서(78) (79)와, 센서에서의 신호를 받아서 필터의 눈막힘 상황을 제어장치로 연산하고, 표시장치(81)에 신호를 발신하는 것을 특징으로 하는 유압회로 오염도 표시장치.
  6. 제3항 또는 제5항에 있어서, 전기한 분류밸브(71)에는 회로속에 설치된 필터(120)의 입구 회로에 배치하는 유량제어밸브(122)에 의하여 일정유량을 흐르게 하는 것을 특징으로 하는 유압회로 오염도 표시장치.
  7. 유압 작동유의 회로속에 설치된 필터(4) (5) (6)에 있어서, 필터내에 배설된 여과입도가 큰 필터로 부터 작동유를 차례로 통과시켜, 각 필터의 입구와 출구의 압력차가 소정량의 수치를 초과했을때, 필터에 설치할 센서(8) (9) (10) (11)에서 수치를 초과한 곳에서 압력신호를 발생시켜, 그 압력신호에 의하여 정상, 주의, 이상의 판정을 하여 표시를 실행하는 것을 특징으로 하는 유압회로 오염도 판정방법.
  8. 유압작동유의 회로속에 설치된 필터(73) (76)의 눈막힘의 유무를 검출하는 것에 의하여 오염도를 판정하는 유압회로의 오염도 판정방법에 있어서, 회로의 작동유의 유량을 2분하고, 각각의 회로에 여과입도가 다른 필터(73) (76)와 오리피스(74) (77)를 배치하며, 우선 한쪽 필터의 눈막힘의 유무를 오리피스의 입구와 출구의 압력차에 의하여 검출하고, 다음에 다른 한쪽 필터의 눈막힘의 유무를 검출하여 그 결과를 해석하며, 오염정도를 3단계 이상의 판정항목으로 구분하여 표시하는 것을 특징으로 하는 유압회로 오염도 판정방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900701852A 1988-12-23 1989-12-21 유압회로 오염도 표시장치 및 그 판정방법 KR910700448A (ko)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP63325536A JPH02170049A (ja) 1988-12-23 1988-12-23 油圧回路汚染度表示装置およびその判定方法
JP1-44089 1989-02-23
JP4408989A JPH02223846A (ja) 1989-02-23 1989-02-23 油圧回路汚染度判定方法
JP1-46988 1989-02-28
JP1046988A JPH02227110A (ja) 1989-02-28 1989-02-28 油圧回路汚染度表示装置
PCT/JP1989/001285 WO1990007706A1 (en) 1988-12-23 1989-12-21 Apparatus for indicating contamination degree in a hydraulic circuit and determining method therefor
JP63-325536 1989-12-23

Publications (1)

Publication Number Publication Date
KR910700448A true KR910700448A (ko) 1991-03-15

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ID=27291782

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Application Number Title Priority Date Filing Date
KR1019900701852A KR910700448A (ko) 1988-12-23 1989-12-21 유압회로 오염도 표시장치 및 그 판정방법

Country Status (5)

Country Link
US (1) US5239861A (ko)
EP (1) EP0408758A4 (ko)
KR (1) KR910700448A (ko)
AU (1) AU619073B2 (ko)
WO (1) WO1990007706A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110038065A (ko) * 2008-06-27 2011-04-13 히다찌 겐끼 가부시키가이샤 작동유의 오염도 검출 장치

Families Citing this family (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5262068A (en) * 1991-05-17 1993-11-16 Millipore Corporation Integrated system for filtering and dispensing fluid having fill, dispense and bubble purge strokes
US5774056A (en) * 1996-05-30 1998-06-30 Engineered Products Co. Gauge for monitoring air filters
GB2315869B (en) * 1996-07-29 2000-10-11 Pall Corp Evaluation of particulate contaminants
US5770152A (en) * 1996-11-18 1998-06-23 Aradigm Corporation Collapsible container for measuring particles in a sample fluid
US5932795A (en) * 1997-01-22 1999-08-03 President And Fellows Of Harvard College Methods and apparatus for continuous ambient particulate mass monitoring
US6307466B1 (en) 1999-06-25 2001-10-23 Engineered Products Company Two stage gauge with electrical signal output
US6327902B1 (en) 1999-06-25 2001-12-11 Engineered Products Company Air filter restriction indicator gauge
US6289726B1 (en) 1999-06-30 2001-09-18 Engineered Products Co. Fuel filter gauge
US6418799B1 (en) 1999-07-20 2002-07-16 Csi Technology, Inc. Sampling apparatus
US6504474B1 (en) * 2000-07-12 2003-01-07 Deere & Company Method and apparatus for detecting a restricted or bypassed transmission oil filter
JP2002371827A (ja) * 2001-06-18 2002-12-26 Denso Corp エンジン用排気浄化装置
GB2388634A (en) 2002-05-15 2003-11-19 Dana Automotive Ltd Engine lubrication system having dual/auxiliary pump operation
US7726951B2 (en) * 2004-06-18 2010-06-01 Jansen's Aircraft Systems Controls, Inc. Fuel control module
US7040874B1 (en) * 2004-11-18 2006-05-09 Honeywell International, Inc. Integrated turbocharger lubricant filter system
US20060117839A1 (en) * 2004-12-02 2006-06-08 General Electric Company Microdebris monitor
US8679241B2 (en) * 2006-10-30 2014-03-25 Novartis Ag Gas pressure monitor for pneumatic surgical machine
US8162000B2 (en) * 2006-12-13 2012-04-24 Novartis Ag Adjustable pneumatic system for a surgical machine
US9241830B2 (en) * 2006-12-15 2016-01-26 Novartis Ag Pressure monitor for pneumatic vitrectomy machine
US8312800B2 (en) * 2006-12-21 2012-11-20 Novartis Ag Pneumatic system for a vitrector
US8080029B2 (en) * 2007-09-21 2011-12-20 Novartis Ag System for actuation of a vitreous cutter
CN101533003B (zh) * 2009-04-09 2012-07-04 西安建筑科技大学 油液污染监测装置
CN101539565B (zh) * 2009-04-28 2012-07-04 西安建筑科技大学 一种液压系统油液污染监测装置
DE102009025707B4 (de) * 2009-06-20 2021-06-02 Robert Bosch Gmbh Vorrichtung zur Steuerung einer Anlage mit Hydraulikkreisen
EP2473144B1 (en) * 2009-08-31 2015-10-14 Alcon Research, Ltd. Pneumatic pressure output control by drive valve duty cycle calibration
WO2011036772A1 (ja) * 2009-09-25 2011-03-31 イビデン株式会社 微粒子センサ及び排ガス浄化装置
WO2011071655A1 (en) 2009-12-10 2011-06-16 Alcon Research, Ltd. Systems and methods for dynamic pneumatic valve driver
US8821524B2 (en) 2010-05-27 2014-09-02 Alcon Research, Ltd. Feedback control of on/off pneumatic actuators
FR2961406B1 (fr) 2010-06-18 2013-03-01 Snecma Dispositif de surveillance du colmatage d'au moins deux filtres d'un systeme de circulation de fluide d'un moteur a turbine a gaz d'aeronef
US20140080115A1 (en) * 2011-02-14 2014-03-20 The Administrators Of The Tulane Educational Fund Device and method for monitoring the presence, onset and evolution of particulates in chemically or physically reacting systems
US8808318B2 (en) 2011-02-28 2014-08-19 Alcon Research, Ltd. Surgical probe with increased fluid flow
CN102192394B (zh) * 2011-04-19 2015-07-08 三一重型装备有限公司 一种齿轮箱油量监测装置和方法
RU2609795C2 (ru) * 2011-05-25 2017-02-06 Доналдсон Компэни, Инк. Фильтрующий узел (варианты) и способ определения его срока службы
CN102954067A (zh) * 2011-08-26 2013-03-06 镇江市科能电力设备有限公司 双筒过滤器
US9060841B2 (en) 2011-08-31 2015-06-23 Alcon Research, Ltd. Enhanced flow vitrectomy probe
GB2499812B (en) * 2012-02-29 2014-09-17 Bofa Internat Ltd Fume extraction
IN2015DN00683A (ko) * 2012-08-01 2015-06-26 Vestas Wind Sys As
DE102013008739B3 (de) * 2013-05-23 2014-09-04 Audi Ag Verfahren zum Betrieb eines Ölfiltersystems
US9120044B2 (en) 2013-09-05 2015-09-01 Bofa International Limited Fume extraction
CN103541951B (zh) * 2013-09-30 2015-09-16 王君 一种液压油污监测系统
US10029290B2 (en) 2013-11-04 2018-07-24 Loci Controls, Inc. Devices and techniques relating to landfill gas extraction
US10576514B2 (en) 2013-11-04 2020-03-03 Loci Controls, Inc. Devices and techniques relating to landfill gas extraction
US9316630B2 (en) * 2013-11-08 2016-04-19 Sikorsky Aircraft Corporation Anti-clog and non-metallic debris detector for lubrication system inlet
US11255768B2 (en) * 2014-06-25 2022-02-22 Halliburton Energy Services, Inc. In situ evaluation of filter parameters with opticoanalytical devices
WO2016115509A1 (en) * 2015-01-16 2016-07-21 Fluidmatics, LLC Hydraulic and lubricating fluid contamination sensor system
CN104931404A (zh) * 2015-06-15 2015-09-23 九江七所精密机电科技有限公司 一种油滤滤芯实际纳污容量测定方法
CA3016023A1 (en) * 2016-03-01 2017-09-08 Loci Controls, Inc. Designs for enhanced reliability and calibration of landfill gas measurement and control devices
US10705063B2 (en) * 2016-03-01 2020-07-07 Loci Controls, Inc. Designs for enhanced reliability and calibration of landfill gas measurement and control devices
CN105999830A (zh) * 2016-07-27 2016-10-12 西安长庆科技工程有限责任公司 一种智能差压报警过滤器设备
US10941683B2 (en) * 2016-09-23 2021-03-09 Bell Helicopter Textron Inc. Oil filter with impending and full-bypass indicators
US10443632B2 (en) * 2017-11-14 2019-10-15 Deere & Company Apparatus and method for a hydraulic system
CN108169091B (zh) * 2018-01-14 2023-05-16 陕西东方长安航空科技有限公司 一种伺服阀污染敏感度测定试验装置及试验方法
CA3092923A1 (en) 2018-03-06 2019-09-12 Loci Controls, Inc. Landfill gas extraction control system
CN108443691A (zh) * 2018-04-02 2018-08-24 广东鸿图南通压铸有限公司 一种压铸冲头润滑油集中供油装置
JP7412890B2 (ja) * 2019-03-26 2024-01-15 株式会社小松製作所 油圧機器の検査装置、油圧機器の検査システム、作業車両および油圧機器の検査方法
JP7312656B2 (ja) * 2019-09-24 2023-07-21 株式会社Ｓｃｒｅｅｎホールディングス 基板処理装置
US11753914B2 (en) * 2019-09-25 2023-09-12 Nikon Corporation Slurry analysis system using flow restriction
WO2021154523A1 (en) 2020-01-29 2021-08-05 Loci Controls, Inc. Automated compliance measurement and control for landfill gas extraction systems
US11623256B2 (en) 2020-07-13 2023-04-11 Loci Controls, Inc. Devices and techniques relating to landfill gas extraction
FR3112835B1 (fr) * 2020-07-21 2022-06-24 Airbus Helicopters Procédé de surveillance d’un système fluidique lubrifiant un système mécanique

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2390539A (en) * 1943-06-19 1945-12-11 Katcher Morris Oil filter
DE1448230A1 (de) * 1960-12-02 1968-11-14 Ernst Scheid Verfahren zur Untersuchung bituminoeser Baustoffe
US3357236A (en) * 1965-06-09 1967-12-12 Bendix Corp Contamination indicator
US3511382A (en) * 1967-05-22 1970-05-12 Johnson & Johnson Device for detection of abnormal milk
US3709614A (en) * 1969-12-13 1973-01-09 Tokyo Keiki Kk Detector apparatus for particulate contaminants in a fluid utilizing parallel flow paths
JPS584779B2 (ja) * 1974-04-25 1983-01-27 株式会社デンソー アブラヨウロカキノ メヅマリヒヨウジソウチ
JPS52129579A (en) * 1976-04-23 1977-10-31 Hitachi Ltd Method and system for measuring clogging of filter
US4117715A (en) * 1977-07-05 1978-10-03 Ransburg Corporation Apparatus for measuring charge on, and density of, airborne particulates
DE3123165A1 (de) * 1981-06-11 1983-01-05 Basf Ag, 6700 Ludwigshafen "verfahren zur herstellung von 2-alkoxy-(1,3)-dioxolanen"
EP0101263A3 (en) * 1982-08-13 1984-03-21 Secretary of State for Trade and Industry in Her Britannic Majesty's Gov. of the U.K. of Great Britain and Northern Ireland Contamination level indicator
JPS60262040A (ja) * 1984-06-08 1985-12-25 Mitsubishi Heavy Ind Ltd 微粒子量検出装置
US4685066A (en) * 1984-12-18 1987-08-04 Caterpillar Inc. Contamination monitor and method
JPS6270732A (ja) * 1985-09-24 1987-04-01 Mitsubishi Electric Corp 純水中の不純物測定装置
US5095740A (en) * 1987-12-31 1992-03-17 Diagnetics, Inc. System for monitoring and analyzing solid contaminents in fluids

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110038065A (ko) * 2008-06-27 2011-04-13 히다찌 겐끼 가부시키가이샤 작동유의 오염도 검출 장치

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