JPS5565116A - Measuring unit for gas flow rate - Google Patents

Measuring unit for gas flow rate

Info

Publication number
JPS5565116A
JPS5565116A JP13914278A JP13914278A JPS5565116A JP S5565116 A JPS5565116 A JP S5565116A JP 13914278 A JP13914278 A JP 13914278A JP 13914278 A JP13914278 A JP 13914278A JP S5565116 A JPS5565116 A JP S5565116A
Authority
JP
Japan
Prior art keywords
electric heater
flow rate
bridge circuit
measuring tube
resistor
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.)
Granted
Application number
JP13914278A
Other languages
Japanese (ja)
Other versions
JPS6013446B2 (en
Inventor
Hisashi Kawai
Tsuneyuki Egami
Tokio Kohama
Hideki Obayashi
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.)
Soken Inc
Original Assignee
Nippon Soken Inc
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 Nippon Soken Inc filed Critical Nippon Soken Inc
Priority to JP53139142A priority Critical patent/JPS6013446B2/en
Priority to US06/092,024 priority patent/US4332165A/en
Publication of JPS5565116A publication Critical patent/JPS5565116A/en
Priority to US06/324,152 priority patent/US4417471A/en
Publication of JPS6013446B2 publication Critical patent/JPS6013446B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To increase the measuring accuracy and response, by using the output signal of the first and second temperature dependancy resistors respectively provided at the location not subjected to thermal effect of the heater in the measuring tube and at the down stream of the electric heater in the flow rate measuring tube, for the measurement.
CONSTITUTION: The bridge circuit is formed with the first temperature dependancy resistor 11 placed at the down stream of the electric heater 10 located in the flow rate measuring tube 9, second temperature dependancy resistor 12 placed at the location not subjected to thermal effect from the electric heater, and two reference resistors 16. Further, by applying voltage to the electric heater 10 and the bridge circuit, the voltage control circuit 17 is constituted so that the potential difference at the diagonal points of the bridge circuit can be controlled to a given value in unbalanced condition. Since the flow rate of measured gas is proportional to the third power of the voltage or current fed to the electric heater, the measuring accuracy and response can be increased.
COPYRIGHT: (C)1980,JPO&Japio
JP53139142A 1978-11-10 1978-11-10 Gas flow measuring device Expired JPS6013446B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP53139142A JPS6013446B2 (en) 1978-11-10 1978-11-10 Gas flow measuring device
US06/092,024 US4332165A (en) 1978-11-10 1979-11-07 Gas flow measuring device
US06/324,152 US4417471A (en) 1978-11-10 1981-11-23 Gas flow measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53139142A JPS6013446B2 (en) 1978-11-10 1978-11-10 Gas flow measuring device

Publications (2)

Publication Number Publication Date
JPS5565116A true JPS5565116A (en) 1980-05-16
JPS6013446B2 JPS6013446B2 (en) 1985-04-08

Family

ID=15238524

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53139142A Expired JPS6013446B2 (en) 1978-11-10 1978-11-10 Gas flow measuring device

Country Status (1)

Country Link
JP (1) JPS6013446B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01250824A (en) * 1988-03-31 1989-10-05 Nissan Motor Co Ltd Throttle body united type air flowmeter
KR100442895B1 (en) * 1995-10-07 2004-09-24 로베르트 보쉬 게엠베하 Measurement resistance temperature control device and temperature control method for detection of charge amount of distribution medium

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0545950Y2 (en) * 1985-01-31 1993-11-30

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01250824A (en) * 1988-03-31 1989-10-05 Nissan Motor Co Ltd Throttle body united type air flowmeter
KR100442895B1 (en) * 1995-10-07 2004-09-24 로베르트 보쉬 게엠베하 Measurement resistance temperature control device and temperature control method for detection of charge amount of distribution medium

Also Published As

Publication number Publication date
JPS6013446B2 (en) 1985-04-08

Similar Documents

Publication Publication Date Title
JPS5543447A (en) Hot-wire type flow rate measuring device
ES8307051A1 (en) Apparatus for monitoring the level of liquid by resistive wire
JPS57173758A (en) Hot wire type current meter
JPS5653404A (en) Nonlinear correction circuit
JPS56143915A (en) Measuring device for gas flow rate
JPS5642110A (en) Detector for flow velocity or flow rate
JPS55112523A (en) Gas flow rate measuring unit
JPS57206830A (en) Heat pulse system flow meter
JPS57192852A (en) Limiting current type oxygen concentration detector controlled in temperature
JPS56142414A (en) Device for measuring gas flow quantity
JPS5565116A (en) Measuring unit for gas flow rate
JPS5522162A (en) Sodium leak detecting method and device
JPS57163822A (en) Measuring device for air flow rate
GB1490261A (en) Resistance measuring apparatus
JPS5753622A (en) Gas flow rate measuring device
JPS5587913A (en) Gas flow rate measuring device
JPS51126863A (en) Mass flow meter
JPS5242167A (en) Semiconductor pressure gauge
JPS5710414A (en) Thermal type flow meter
JPS5539069A (en) Temperature compensation type digital resistance meter
JPS5657914A (en) Gas flow rate measuring device
JPS5558466A (en) Resistance measuring circuit
JPS5349485A (en) Apparatus for measuring temperature of rotor
JPS57182133A (en) Temperature measuring circuit by temperature measuring resistor
JPS55160824A (en) Method of measuring heat flow and device therefor