JPS5742812A - Electromagnetic flowmeter with water-unfilling state detecting function - Google Patents

Electromagnetic flowmeter with water-unfilling state detecting function

Info

Publication number
JPS5742812A
JPS5742812A JP11783280A JP11783280A JPS5742812A JP S5742812 A JPS5742812 A JP S5742812A JP 11783280 A JP11783280 A JP 11783280A JP 11783280 A JP11783280 A JP 11783280A JP S5742812 A JPS5742812 A JP S5742812A
Authority
JP
Japan
Prior art keywords
converter
output
signal
energizes
piping
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
JP11783280A
Other languages
Japanese (ja)
Inventor
Yoshinori Matsunaga
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.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
Yokogawa Hokushin Electric 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 Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP11783280A priority Critical patent/JPS5742812A/en
Publication of JPS5742812A publication Critical patent/JPS5742812A/en
Pending legal-status Critical Current

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
    • G01F1/56—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 electric or magnetic effects
    • G01F1/58—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 electric or magnetic effects by electromagnetic flowmeters
    • G01F1/60—Circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To eliminate erroneous indications of a converter and a failure in flowrate control by preventing the converter from malfunctioning owing to an induced noise, by making the output signal of a detecting element, responding to pressure at the inside of a lining, goes down to zero. CONSTITUTION:While a conductive fluid is flowing in piping 1, a voltage drop detected by a detecting element 4 in a lining 2 increases; and the output of a comparator 8 never energizes a relay 9 and a switch 11 stays on. Therefore, a signal voltage from a transmitter equipped with electrodes 3 is applied to an amplifier 10 in a converter wherein prescribed arithmetic is carried out to send a current signal, proportional to a flow rate, out of a frequency-current converting circuit 15. Once the piping 1 is emptied, the output signal of the element 4 energizes the relay 9 with the output of the comparator 8 to turn on the switch 11, and consequently the input side of the amplifier 10 is grounded to hold the output of the converter at the zero point.
JP11783280A 1980-08-28 1980-08-28 Electromagnetic flowmeter with water-unfilling state detecting function Pending JPS5742812A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11783280A JPS5742812A (en) 1980-08-28 1980-08-28 Electromagnetic flowmeter with water-unfilling state detecting function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11783280A JPS5742812A (en) 1980-08-28 1980-08-28 Electromagnetic flowmeter with water-unfilling state detecting function

Publications (1)

Publication Number Publication Date
JPS5742812A true JPS5742812A (en) 1982-03-10

Family

ID=14721348

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11783280A Pending JPS5742812A (en) 1980-08-28 1980-08-28 Electromagnetic flowmeter with water-unfilling state detecting function

Country Status (1)

Country Link
JP (1) JPS5742812A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59217114A (en) * 1983-05-25 1984-12-07 Yamatake Honeywell Co Ltd Electromagnetic flowmeter
EP3136060A1 (en) * 2015-08-26 2017-03-01 Techcross Inc. Electromagnetic flow meter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59217114A (en) * 1983-05-25 1984-12-07 Yamatake Honeywell Co Ltd Electromagnetic flowmeter
JPH0454890B2 (en) * 1983-05-25 1992-09-01 Yamatake Honeywell Co Ltd
EP3136060A1 (en) * 2015-08-26 2017-03-01 Techcross Inc. Electromagnetic flow meter
JP2017044694A (en) * 2015-08-26 2017-03-02 テックロス カンパニー リミテッド Electromagnetic flow meter
CN106568485A (en) * 2015-08-26 2017-04-19 泰科罗斯有限公司 Electromagnetic flow meter

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