HRP20100497T1 - Method for recognising errors in a flow sensor - Google Patents

Method for recognising errors in a flow sensor Download PDF

Info

Publication number
HRP20100497T1
HRP20100497T1 HR20100497T HRP20100497T HRP20100497T1 HR P20100497 T1 HRP20100497 T1 HR P20100497T1 HR 20100497 T HR20100497 T HR 20100497T HR P20100497 T HRP20100497 T HR P20100497T HR P20100497 T1 HRP20100497 T1 HR P20100497T1
Authority
HR
Croatia
Prior art keywords
quotient
temperature
flow
mass flow
memory
Prior art date
Application number
HR20100497T
Other languages
Croatian (hr)
Inventor
Tomczak Heinz-J�rg
Original Assignee
Vaillant Gmbh
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
Priority claimed from AT0122707A external-priority patent/AT505301B1/en
Application filed by Vaillant Gmbh filed Critical Vaillant Gmbh
Publication of HRP20100497T1 publication Critical patent/HRP20100497T1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
    • G01F1/696—Circuits therefor, e.g. constant-current flow meters
    • G01F1/6965—Circuits therefor, e.g. constant-current flow meters comprising means to store calibration data for flow signal calculation or correction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
    • G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Details Of Flowmeters (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
  • Liquid Crystal (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

The method involves measuring the quotient of the temperature under reference condition by two temperature sensors (3,4), where the measurement depending on one of the two determined temperatures or the determined mass flow (m), and stored in a memory. The quotient of the temperature is measured by both the temperature sensors, and from which the mass flow is determined in normal operation. The actual measured quotient differs from the stored quotients at the same mass flow from the corresponding reference measurement that is more than a predetermined tolerance.

Claims (3)

1. Postupak za prepoznavanje grešaka u senzoru za protok (1) koji obuhvaća dva temperaturna senzora (3, 4) s grijaćim elementom (2) koji je postavljen između senzora, naznačen time što je senzor za protok (1) pod referentnim uvjetima izložen različitim protocima mase i pri tome se detektira temperatura obaju senzora za temperaturu (3, 4), pri čemu se iz tih temperatura računski određuje protok mase (m) kao i kvocijent (Vref(m)) obiju temperatura (T1(m), T2(m)) i unose se kao referentne vrijednosti u memoriju, pri čemu se u normalnom pogonu na isti način određuje takav kvocijent V(m) obiju temperatura T1(m), T2(m) koje su izmjerene pomoću dvaju temperaturnih senzora (3, 4), i temperature T1(m), T2(m) koje su na taj način izmjerene služe isto tako za određivanje protoka mase m i u slučaju, u kojemu se aktualno izmjereni kvocijent V(m) razlikuje od kvocijenta Vref(m), koji je pohranjen u memoriji za jednaki protok mase m i koji je dobiven iz odgovarajućih referentnih mjerenja, za veći iznos od prethodno zadane tolerancije, emitira se signal za grešku.1. A method for identifying errors in a flow sensor (1) comprising two temperature sensors (3, 4) with a heating element (2) placed between the sensors, characterized in that is the flow sensor (1) under reference conditions exposed to different mass flows and the temperature of both temperature sensors (3, 4) is detected, whereby the mass flow (m) as well as the quotient (Vref(m)) of both temperatures (T1(m), T2(m)) are calculated from these temperatures and are entered as reference values in the memory, whereby in normal operation, such a quotient V(m) is determined in the same way, both temperatures T1(m), T2(m) which were measured by two temperature sensors (3, 4), and temperatures T1(m), T2(m) which are measured in this way also serve to determine the mass flow m i in the case, in which the currently measured quotient V(m) differs from the quotient Vref(m), which is stored in the memory for the same mass flow m and which was obtained from the corresponding reference measurements, by a greater amount than the previously set tolerance, a signal is emitted for a mistake. 2. Postupak za prepoznavanje greške senzora za protok u skladu s patentnim zahtjevom 1, naznačen time što tolerancija ima unaprijed određenu vrijednost ili je povezana uz najmanje jednu izmjerenu vrijednost.2. A method for identifying a flow sensor error according to claim 1, characterized in that the tolerance has a predetermined value or is related to at least one measured value. 3. Postupak za prepoznavanje greške senzora za protok u skladu s jednim od patentnih zahtjeva 1 ili 2, naznačen time što se kod određivanja referentne vrijednosti pohranjuje u memoriju također i temperatura T1(m) prvog senzora za temperaturu (3) koji je u smjeru strujanja, i u slučaju da je prepoznata greška, određuje se protok mase m iz signala prvog senzora za temperaturu (3) koji je u smjeru strujanja i iz referentnih vrijednosti koje su pohranjene u memoriji. [image] 3. Method for recognizing a flow sensor error in accordance with one of patent claims 1 or 2, characterized in that when determining the reference value, the temperature T1(m) of the first temperature sensor (3) which is in the flow direction is also stored in the memory , and in the event that an error is recognized, the mass flow m is determined from the signal of the first temperature sensor (3) which is in the direction of flow and from the reference values that are stored in the memory. [image]
HR20100497T 2007-03-19 2010-09-07 Method for recognising errors in a flow sensor HRP20100497T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007013079 2007-03-19
AT0122707A AT505301B1 (en) 2007-08-06 2007-08-06 PROCESS FOR ERROR DETECTION OF A FLOW SENSOR

Publications (1)

Publication Number Publication Date
HRP20100497T1 true HRP20100497T1 (en) 2010-10-31

Family

ID=39619117

Family Applications (1)

Application Number Title Priority Date Filing Date
HR20100497T HRP20100497T1 (en) 2007-03-19 2010-09-07 Method for recognising errors in a flow sensor

Country Status (8)

Country Link
EP (1) EP1972906B1 (en)
AT (1) ATE470841T1 (en)
DE (2) DE102008014327A1 (en)
DK (1) DK1972906T3 (en)
ES (1) ES2344375T3 (en)
HR (1) HRP20100497T1 (en)
PL (1) PL1972906T3 (en)
SI (1) SI1972906T1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012001060A1 (en) * 2011-10-24 2013-04-25 Hydrometer Gmbh Method for correcting offset drift effects of a thermal measuring device, thermal measuring device and gas flow meter
JP5835182B2 (en) * 2012-10-11 2015-12-24 オムロン株式会社 Thermal flow meter and abnormality determination method thereof
DE102012219287A1 (en) * 2012-10-23 2014-04-24 Continental Automotive Gmbh Method for operating an air mass meter
DE102012219290A1 (en) * 2012-10-23 2014-04-24 Continental Automotive Gmbh Method for operating an air mass meter
EP4009008B1 (en) 2020-12-03 2024-01-31 Sensirion AG Fault detection in a thermal sensor device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH694474A5 (en) 2000-06-23 2005-01-31 Sensirion Ag Gas meter and use of the gas meter.
DE10056064B4 (en) 2000-11-11 2005-09-08 Honeywell B.V. Method for controlling a gas burner
US7000464B2 (en) * 2002-05-28 2006-02-21 Mcmillan Company Measuring and control of low fluid flow rates with heated conduit walls
JP3945385B2 (en) * 2002-11-15 2007-07-18 オムロン株式会社 Flow sensor and flow measurement method
DE102005025884A1 (en) * 2005-06-06 2006-12-07 Robert Bosch Gmbh Method and device for correcting a signal of a sensor

Also Published As

Publication number Publication date
DE502008000755D1 (en) 2010-07-22
EP1972906A1 (en) 2008-09-24
SI1972906T1 (en) 2010-09-30
ATE470841T1 (en) 2010-06-15
EP1972906B1 (en) 2010-06-09
ES2344375T3 (en) 2010-08-25
DE102008014327A1 (en) 2008-09-25
DK1972906T3 (en) 2010-09-20
PL1972906T3 (en) 2010-11-30

Similar Documents

Publication Publication Date Title
FI3668400T3 (en) Method for the individualized calibration of analyte sensors
HRP20100497T1 (en) Method for recognising errors in a flow sensor
US20140230519A1 (en) Method for correcting offset drift effects of a thermal measurement device, thermal measurement device and gas flow meter
EP2573531A3 (en) Threshold-based temperature-dependent power/thermal management with temperature sensor calibration
CA2913904C (en) Flow meter and a method of calibration
DE60042747D1 (en) METHOD AND DEVICE FOR IMPROVING THE MEASURING ACCURACY OF FLOW SPEED
US20090259362A1 (en) Method for generating substitute values for measured values in a control unit
RU2376644C2 (en) Fire alarm system with linear detectors, based on merging data, and method of making said alarm
CN106482868A (en) Temperature difference calibration steps and its system
CN102331266A (en) Multi-parameter gas sensor compensating method
JP2007248455A5 (en)
CN105387841B (en) Height detecting device, load driving apparatus and height detection method
US7096723B2 (en) Method and device for determining the throughput of a flowing medium
WO2009013095A3 (en) Device for sensing the wind conditions on a vehicle
CN101087997A (en) Automatic thermal conductivity compensation for fluid flow sensing using chemometrics
WO2011083393A3 (en) System for measuring fluid flow velocity
CN104596657A (en) Gas compressor inlet/outlet temperature monitoring device and method
CA2853430C (en) Systems and methods for overheat detection system event location
SE1050545A1 (en) Temperature measurement system and method for a temperature measurement system comprising at least one thermocouple
CN104330103A (en) Constant-temperature and constant-humidity system fault detection device
JP2009092523A (en) Method for determining detrioration of moisture sensor and moisture measurement device
CN108398167B (en) Method for measuring pressure and coriolis mass flowmeter
US20210239501A1 (en) Measuring device and measuring probe for a flowing fluid
CN206725125U (en) A kind of standard thermometer
Jose et al. Reliability tests for modelling of relative humidity sensor drifts