JPS6426213A - Water level conversion device - Google Patents

Water level conversion device

Info

Publication number
JPS6426213A
JPS6426213A JP18255787A JP18255787A JPS6426213A JP S6426213 A JPS6426213 A JP S6426213A JP 18255787 A JP18255787 A JP 18255787A JP 18255787 A JP18255787 A JP 18255787A JP S6426213 A JPS6426213 A JP S6426213A
Authority
JP
Japan
Prior art keywords
water level
water
tank
variation
output signal
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
JP18255787A
Other languages
Japanese (ja)
Other versions
JPH0642167B2 (en
Inventor
Shoichi Matsui
Sadayuki Tamae
Mitsusachi Kiuchi
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 JP18255787A priority Critical patent/JPH0642167B2/en
Publication of JPS6426213A publication Critical patent/JPS6426213A/en
Publication of JPH0642167B2 publication Critical patent/JPH0642167B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To detect even the low level of water with high accuracy by driving a feed water valve driving means and reading the output signal of a water level detecting means within a constant period, deciding that the water level in a tank is 0 when its variation is smaller than a specific value, and correcting a value corresponding to a desired water level according to the output signal. CONSTITUTION:A control means 4 reads variation of the output signal of the water level detecting means 3 within the constant period from the start of feeding water into the tank and when the variation is smaller than the constant value, it is decided that the water level in the tank is 0; and the value corresponding to the desired water level is calculated with the output signal of the water level detecting means 3 when the water level is 0 to perform water level control. Even if operation is started by mistake while water is reservoired in the tank, corrections are never made according to the water level signal in the presence of the water. Consequently, invariably high-accuracy water level detection is performed and corrections are made to detect even the low level of water with high accuracy regardless of variation in ambient temperature and variance of a water level detecting device itself at the time of mass- production.
JP18255787A 1987-07-22 1987-07-22 Water level converter Expired - Lifetime JPH0642167B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18255787A JPH0642167B2 (en) 1987-07-22 1987-07-22 Water level converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18255787A JPH0642167B2 (en) 1987-07-22 1987-07-22 Water level converter

Publications (2)

Publication Number Publication Date
JPS6426213A true JPS6426213A (en) 1989-01-27
JPH0642167B2 JPH0642167B2 (en) 1994-06-01

Family

ID=16120358

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18255787A Expired - Lifetime JPH0642167B2 (en) 1987-07-22 1987-07-22 Water level converter

Country Status (1)

Country Link
JP (1) JPH0642167B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01180016A (en) * 1988-01-08 1989-07-18 Matsushita Electric Ind Co Ltd Water level converting device
CN102759930A (en) * 2012-08-06 2012-10-31 孙效 Level control device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01180016A (en) * 1988-01-08 1989-07-18 Matsushita Electric Ind Co Ltd Water level converting device
CN102759930A (en) * 2012-08-06 2012-10-31 孙效 Level control device

Also Published As

Publication number Publication date
JPH0642167B2 (en) 1994-06-01

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