JPS5666745A - Humidity detector - Google Patents

Humidity detector

Info

Publication number
JPS5666745A
JPS5666745A JP14264479A JP14264479A JPS5666745A JP S5666745 A JPS5666745 A JP S5666745A JP 14264479 A JP14264479 A JP 14264479A JP 14264479 A JP14264479 A JP 14264479A JP S5666745 A JPS5666745 A JP S5666745A
Authority
JP
Japan
Prior art keywords
porcelain
heating
cleaning
humidity sensing
power supply
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
JP14264479A
Other languages
Japanese (ja)
Other versions
JPS631538B2 (en
Inventor
Jiro Terada
Koji Nitta
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14264479A priority Critical patent/JPS5666745A/en
Publication of JPS5666745A publication Critical patent/JPS5666745A/en
Publication of JPS631538B2 publication Critical patent/JPS631538B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To enable the cleaning and humidity detection of the porcelain element for humidity sensing resistor, by using resistance heater for the electrode of the porcelain and providing the power supply for heating for indirect heating means and cleaning means, and the detection means of resistance value for the porcelain.
CONSTITUTION: Opposed electrodes 2, 3 are provided on both the surfaces of a humidity sensing resistor porcelain plate (e.g., porcelain plate of MgCr2O4-TiO2 system) 1, and the electrode 3 is formed with a resistance heater (e.g., RuO2). 3' is the electrode terminal of resistance heater and 4 is lead. The humidity sensing body is kept on the insulation support 5 through leads 6, 7, 8. Heating power supply VH for indirect heating and cleaning, and applied power supply VS for humidity detection are provided. Since the humidity sensing resistance porcelain itselt is acted as a temperature sensor, sure heating and cleaning is made, and since the heating temperature is automatically controlled, no element is damaged. The circuit constitution is very simpler than the provision with thermocouples externally.
COPYRIGHT: (C)1981,JPO&Japio
JP14264479A 1979-11-01 1979-11-01 Humidity detector Granted JPS5666745A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14264479A JPS5666745A (en) 1979-11-01 1979-11-01 Humidity detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14264479A JPS5666745A (en) 1979-11-01 1979-11-01 Humidity detector

Publications (2)

Publication Number Publication Date
JPS5666745A true JPS5666745A (en) 1981-06-05
JPS631538B2 JPS631538B2 (en) 1988-01-13

Family

ID=15320139

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14264479A Granted JPS5666745A (en) 1979-11-01 1979-11-01 Humidity detector

Country Status (1)

Country Link
JP (1) JPS5666745A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS577353U (en) * 1980-06-14 1982-01-14
US4647895A (en) * 1985-05-08 1987-03-03 Motorola, Inc. Ceramic temperature sensor
US4677415A (en) * 1985-05-08 1987-06-30 Motorola, Inc. Ceramic humidity sensor
US4743881A (en) * 1985-05-08 1988-05-10 Motorola, Inc. Ceramic temperature sensor
JP2012107999A (en) * 2010-11-17 2012-06-07 New Cosmos Electric Corp Gas detection element

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS577353U (en) * 1980-06-14 1982-01-14
US4647895A (en) * 1985-05-08 1987-03-03 Motorola, Inc. Ceramic temperature sensor
US4677415A (en) * 1985-05-08 1987-06-30 Motorola, Inc. Ceramic humidity sensor
US4743881A (en) * 1985-05-08 1988-05-10 Motorola, Inc. Ceramic temperature sensor
JP2012107999A (en) * 2010-11-17 2012-06-07 New Cosmos Electric Corp Gas detection element

Also Published As

Publication number Publication date
JPS631538B2 (en) 1988-01-13

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