JPS5576912A - Electromagnetic flow meter - Google Patents

Electromagnetic flow meter

Info

Publication number
JPS5576912A
JPS5576912A JP15050778A JP15050778A JPS5576912A JP S5576912 A JPS5576912 A JP S5576912A JP 15050778 A JP15050778 A JP 15050778A JP 15050778 A JP15050778 A JP 15050778A JP S5576912 A JPS5576912 A JP S5576912A
Authority
JP
Japan
Prior art keywords
output
flow rate
flow
samp
tpo
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.)
Pending
Application number
JP15050778A
Other languages
Japanese (ja)
Inventor
Akira Yokoyama
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.)
Azbil Corp
Original Assignee
Azbil 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 Azbil Corp filed Critical Azbil Corp
Priority to JP15050778A priority Critical patent/JPS5576912A/en
Publication of JPS5576912A publication Critical patent/JPS5576912A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measuring Volume Flow (AREA)

Abstract

PURPOSE: To reduce consumed electric power, by causing an exciting current to flow only when a request for measurement of flow rate is made.
CONSTITUTION: An exciting current is caused to flow through a coil L by the output of a timing pulse generation circuit TPO which is operated by a flow rate measurement selection output. Sampling switches SAMP1, SAMP2 are controlled by the output of the circuit TPO to sample voltages on an electrode ED. The sampled voltages are held by capacitors C1, C2. The sampled and held signals are amplified, and the outputs are differentially amplified by an operational amplifier OA3. A flow rate signal is obtained from the output terminal E0 of the amplifier OA3.
COPYRIGHT: (C)1980,JPO&Japio
JP15050778A 1978-12-07 1978-12-07 Electromagnetic flow meter Pending JPS5576912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15050778A JPS5576912A (en) 1978-12-07 1978-12-07 Electromagnetic flow meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15050778A JPS5576912A (en) 1978-12-07 1978-12-07 Electromagnetic flow meter

Publications (1)

Publication Number Publication Date
JPS5576912A true JPS5576912A (en) 1980-06-10

Family

ID=15498370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15050778A Pending JPS5576912A (en) 1978-12-07 1978-12-07 Electromagnetic flow meter

Country Status (1)

Country Link
JP (1) JPS5576912A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4766770A (en) * 1984-03-30 1988-08-30 Fischer & Porter Company Low duty cycle electromagnetic flowmeter
EP0730139A2 (en) 1995-03-02 1996-09-04 Yokogawa Electric Corporation Electromagnetic flowmeter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4766770A (en) * 1984-03-30 1988-08-30 Fischer & Porter Company Low duty cycle electromagnetic flowmeter
EP0730139A2 (en) 1995-03-02 1996-09-04 Yokogawa Electric Corporation Electromagnetic flowmeter

Similar Documents

Publication Publication Date Title
JPS5536800A (en) Resistance neutralization system for electrochemical device
JPS5576912A (en) Electromagnetic flow meter
JPS55112838A (en) Air-fuel ratio controller
JPS54143177A (en) Magnetic field detector
JPS558656A (en) Sample hold circuit
JPS5543420A (en) Metallic material examination device
JPS55146036A (en) Polarograph of step wave semidifferentiation and integration
SU998850A1 (en) Device for measuring microwire diameter
JPS5750614A (en) Electromagnetic flowmeter
JPS5394964A (en) Pulse receiving circuit
JPS5582967A (en) Measuring method for electric signal wave-form using optical-fiber
JPS55149863A (en) Extreme value detector for electric signal
JPH023126Y2 (en)
JPS5576913A (en) Electromagnetic flow meter
SU1705942A1 (en) Inductive impedance instrument
SU1638659A1 (en) Device for measuring resistance of live wire with frequency output
JPS5525269A (en) Automatic gain control circuit
JPS54156152A (en) Trouble detector for power switch
JPS5690211A (en) Displacement converter
JPS5599025A (en) Electromagnetic flow meter
JPS5779732A (en) Waveform coder
JPS544339A (en) Trouble detecting system in electric power system
JPS55135758A (en) Automatic test unit
JPS5315857A (en) Electric power measuring system
JPS6433799A (en) Sample holding circuit