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KR102248211B1 - Fermented wine alcohol concentration measurement device using ultra sonic wave - Google Patents

Fermented wine alcohol concentration measurement device using ultra sonic wave Download PDF

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KR102248211B1
KR102248211B1 KR1020180131127A KR20180131127A KR102248211B1 KR 102248211 B1 KR102248211 B1 KR 102248211B1 KR 1020180131127 A KR1020180131127 A KR 1020180131127A KR 20180131127 A KR20180131127 A KR 20180131127A KR 102248211 B1 KR102248211 B1 KR 102248211B1
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fermented liquor
alcohol concentration
ultrasonic
height
measuring
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KR20200048726A (en
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김봉민
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코리아디지탈 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/024—Analysing fluids by measuring propagation velocity or propagation time of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/022—Liquids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02809—Concentration of a compound, e.g. measured by a surface mass change

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Abstract

본 발명은 발효주 초음파 알콜농도 측정장치 및 그 측정방법에 관한 것으로, 더욱 상세하게는 막걸리와 같은 발효주의 알콜농도를 비중계를 측정할 때 초음파센서를 활용하여 자동적으로 측정하여 외부단말기로 모니터링할 수 있어서 정확한 알콜농도를 가진 발효주를 손쉽게 생산할 수 있도록 하는 발효주 초음파 알콜농도 측정장치 및 그 측정방법에 관한 것이다.
본 발명의 바람직한 실시예로 형성된 발효주 초음파 알콜농도 측정장치 및 그 측정방법에 의하면 발효주 탱크 내부에 전자적으로 알코올 농도를 측정할 수 있어서 정확할 뿐만 아니라 실시간으로 데이터를 얻을 수 있고, 발효주탱크 내부에 직접 설치하기 때문에 시료를 채취할 필요가 없어서 편리하며, 간단한 센서구조여서 설치 및 조립이 간단하여 청소가 용이하며, 반영구적으로 사용할 수 있는 등의 효과가 발생한다.The present invention relates to an ultrasonic alcohol concentration measuring device for fermented liquor and a measuring method thereof, and more particularly, when measuring the alcohol concentration of fermented liquor such as makgeolli, when measuring a hydrometer, it can be automatically measured using an ultrasonic sensor and monitored with an external terminal. The present invention relates to an ultrasonic alcohol concentration measuring device for fermented liquor that enables easy production of fermented liquor having an accurate alcohol concentration and a measuring method thereof.
According to the ultrasonic alcohol concentration measuring device for fermented liquor formed in a preferred embodiment of the present invention and the measuring method thereof, it is possible to measure the alcohol concentration electronically in the fermented liquor tank, so that data can be obtained in real time as well as accurately and installed directly inside the fermented liquor tank. Therefore, it is convenient because there is no need to collect a sample, and because it has a simple sensor structure, it is easy to install and assemble, so it is easy to clean and can be used semi-permanently.

Description

발효주 초음파 알콜농도 측정장치 및 그 측정방법{FERMENTED WINE ALCOHOL CONCENTRATION MEASUREMENT DEVICE USING ULTRA SONIC WAVE }Fermented liquor ultrasonic alcohol concentration measuring device and its measuring method {FERMENTED WINE ALCOHOL CONCENTRATION MEASUREMENT DEVICE USING ULTRA SONIC WAVE}

본 발명은 발효주 초음파 알콜농도 측정장치 및 그 측정방법에 관한 것으로, 더욱 상세하게는 막걸리와 같은 발효주의 알콜농도를 비중계를 측정할 때 초음파센서를 활용하여 자동적으로 측정하여 외부단말기로 모니터링할 수 있어서 정확한 알콜농도를 가진 발효주를 손쉽게 생산할 수 있도록 하는 발효주 초음파 알콜농도 측정장치 및 그 측정방법에 관한 것이다.The present invention relates to an ultrasonic alcohol concentration measuring device for fermented liquor and a measuring method thereof, and more particularly, when measuring the alcohol concentration of fermented liquor such as makgeolli, when measuring a hydrometer, it can be automatically measured using an ultrasonic sensor and monitored with an external terminal. The present invention relates to an ultrasonic alcohol concentration measuring apparatus for fermented liquor that enables easy production of fermented liquor having an accurate alcohol concentration, and a measuring method thereof.

발효주란 발효된 술이라는 뜻으로, 양조주라고도 불리는데 막걸리(탁주), 청주, 맥주, 와인 등이 여기에 속한다. Fermented liquor means fermented liquor, which is also called brewed liquor, and includes makgeolli (takju), cheongju, beer, and wine.

상기 발효주는 기원전 6000년경부터 제작되었다고 알려져 있고, 기록상으로는 수메르의 문헌에서 양조방법이 발견된 것이 가장 오래되었다.It is known that the fermented liquor has been produced from around 6000 BC, and it is the oldest in records that a brewing method has been discovered in Sumerian literature.

상기 발효주 중에 가장 대표적인 것이 막걸리 인데, 막걸리는 발효를 통해 품질 또는 맛이 결정된다. 즉, 막걸리의 유산균 및 효모는 발효 당시 미생물 생육조건을 결정하는 온도, pH, 산도 등의 발효환경 인자에 영향을 받으며, 막걸리의 주성분인 알코올 함량, 당도 및 유기산 함량의 조화로운 배합은 품질을 결정하게 된다. The most representative of the fermented liquor is makgeolli, and the quality or taste of makgeolli is determined through fermentation. In other words, lactic acid bacteria and yeast in makgeolli are affected by fermentation environmental factors such as temperature, pH, and acidity that determine microbial growth conditions at the time of fermentation, and the harmonious combination of alcohol content, sugar content and organic acid content, which are the main ingredients of makgeolli, determines the quality. It is done.

따라서 고품질 막걸리 생산을 위해서는 재료 및 발효공정 동안 중점 관리대상인 품질인자를 선정하고 제품화될 때까지 정확한 모니터링을 통한 품질 관리가 이루어져야 한다.Therefore, for the production of high-quality makgeolli, quality control through accurate monitoring should be performed until the product is made after selecting the quality factor that is the subject of priority control during the material and fermentation process.

종래의 발효주의 생산에 관한 기술은 대한민국 특허청 등록특허공보 제1605995호, 제1608626호 등에 개시된 바 있다.Techniques related to the production of conventional fermented liquor have been disclosed in Korean Patent Office Patent Publication Nos. 1605995 and 1608626.

그러나, 종래의 발효주를 생산함에 있어서 발효주의 알콜농도를 측정하는데에는 다음과 같은 문제점이 있었다.However, in the production of conventional fermented liquor, there are the following problems in measuring the alcohol concentration of fermented liquor.

(1) 비중계를 이용하여 사람이 직접 눈으로 눈금을 읽어서 측정하기 때문에 정확성이 떨어지고 실시간으로 데이터를 얻을 수 없다.(1) Since humans directly read and measure the scale using a hydrometer, accuracy is poor and data cannot be obtained in real time.

(2) 시료를 채취하여 이를 전자식센서에 넣어서 측정하여야 하므로 즉각적인 알콜농도의 측정이 어렵다.(2) Immediate measurement of alcohol concentration is difficult because a sample must be collected and measured by putting it in an electronic sensor.

상기한 문제점을 해결하기 위해서, 본 발명은 비중계가 포함된 몸체의 상단에 측정센서가 내장되는 커버가 형성되는 장치가 발효주 상부에서 삽입되는 상태에서,In order to solve the above problem, the present invention is in a state in which a device in which a cover is formed in which a measurement sensor is embedded at the upper end of a body including a hydrometer is inserted from the top of the fermented wine,

몸체의 내부로 유입되는 발효주수면의 높이를 초음파로 측정하여 A높이를 산출하는 수면높이측정단계와;A water surface height measurement step of calculating a height A by measuring the height of the fermentation water surface flowing into the body by ultrasonic waves;

상기 비중계의 상부에 형성된 인디케이터의 높이를 초음파로 측정하여 B높이를 산출하는 비중계높이측정단계와;A hydrometer height measuring step of calculating a B height by measuring the height of the indicator formed on the upper part of the hydrometer with ultrasonic waves;

상기 비중계높이측정단계 후에 대기 온도값을 대입하여 초음파의 속도를 보정한 후 A높이와 B높이의 차를 이용하여 알콜농도를 계산하는 농도계산단계와;A concentration calculation step of calculating the alcohol concentration by using the difference between the height of A and the height of B after correcting the speed of the ultrasonic wave by substituting an atmospheric temperature value after the step of measuring the height of the hydrometer;

상기 농도계산단계에서 계산된 농도를 시간별로 저장하는 저장단계로 구성된다.It consists of a storage step of storing the concentration calculated in the concentration calculation step by time.

본 발명의 발효주 초음파 알콜농도 측정장치는 발효주탱크에 거치할 수 있도록 형성되는 거치대와;The ultrasonic alcohol concentration measuring apparatus for fermented liquor of the present invention includes a cradle formed to be mounted in a fermented liquor tank;

상기 거치대의 끝단에 고정될 수 있도록 하는 장치로 구성되되, Consisting of a device that can be fixed to the end of the cradle,

상기 장치는 내부에 초음파센서, 제어회로가 형성되는 커버와;The device includes a cover having an ultrasonic sensor and a control circuit formed therein;

상기 커버의 하단에 형성되고, 하단에 유동홀이 형성되는 몸체와;A body formed at the lower end of the cover and having a flow hole formed at the lower end;

상기 몸체의 내부에서 부유할 수 있도록 내부에 기체가 포함되고, 하단에 중량부가 형성되며, 상단에 지주가 형성되고, 상기 지주의 끝단에는 인디케이터가 형성되는 것을 특징으로 한다.It is characterized in that a gas is contained therein so as to float inside the body, a weight part is formed at a lower end, a post is formed at an upper end, and an indicator is formed at an end of the post.

본 발명의 바람직한 실시예로 형성된 발효주 초음파 알콜농도 측정장치 및 그 측정방법에 의하면 다음과 같은 효과가 발생한다.According to the ultrasonic alcohol concentration measuring apparatus and the measuring method of fermented liquor formed in a preferred embodiment of the present invention, the following effects occur.

(1) 발효주 탱크 내부에 전자적으로 알코올 농도를 측정할 수 있어서 정확할 뿐만 아니라 실시간으로 데이터를 얻을 수 있다.(1) As the alcohol concentration can be measured electronically inside the fermented liquor tank, it is not only accurate, but data can be obtained in real time.

(2) 발효주탱크 내부에 직접 설치하기 때문에 시료를 채취할 필요가 없어서 편리하다. (2) Since it is installed directly inside the fermented liquor tank, it is convenient because there is no need to collect samples.

(3) 간단한 센서구조여서 설치 및 조립이 간단하여 청소가 용이하며, 반영구적으로 사용할 수 있다.(3) Simple sensor structure, easy to install and assemble, easy to clean, and can be used semi-permanently.

도 1은 본 발명의 바람직한 실시예로 형성된 발효주 초음파 알콜농도 측정장방법의 순서도.
도 2는 본 발명의 바람직한 실시예로 형성된 발효주 초음파 알콜농도 측정장치의 사시도.
도 3은 본 발명의 바람직한 실시예로 형성된 발효주 초음파 알콜농도 측정장치의 장치 부분의 사시도.
도 4는 본 발명의 바람직한 실시예로 형성된 발효주 초음파 알콜농도 측정장치의 설치상태 사시도.1 is a flow chart of the ultrasonic alcohol concentration measuring method of fermented liquor formed in a preferred embodiment of the present invention.
Figure 2 is a perspective view of an ultrasonic alcohol concentration measuring device for fermented liquor formed in a preferred embodiment of the present invention.
3 is a perspective view of a device part of an ultrasonic alcohol concentration measuring device for fermented liquor formed in a preferred embodiment of the present invention.
Figure 4 is a perspective view of the installed state of the ultrasonic alcohol concentration measuring device for fermented liquor formed in a preferred embodiment of the present invention.

본 발명은 비중계(110)가 포함된 몸체(100)의 상단에 측정센서가 내장되는 커버(130)가 형성되는 장치(50)가 발효주 상부에서 삽입되는 상태에서,The present invention is in a state in which the device 50 in which the cover 130 in which the measurement sensor is embedded is formed at the top of the body 100 including the hydrometer 110 is inserted from the top of the fermented liquor,

몸체(100)의 내부로 유입되는 발효주수면의 높이를 초음파로 측정하여 A높이를 산출하는 수면높이측정단계(1)와;A water surface height measurement step (1) of calculating a height A by measuring the height of the fermentation water surface flowing into the body 100 by ultrasonic waves;

상기 비중계(110)의 상부에 형성된 인디케이터(115)의 높이를 초음파로 측정하여 B높이를 산출하는 비중계높이측정단계(2)와;A hydrometer height measuring step (2) of calculating the B height by measuring the height of the indicator 115 formed on the hydrometer 110 by ultrasonic waves;

상기 비중계높이측정단계(2) 후에 대기 온도값을 대입하여 초음파의 속도를 보정한 후 A높이와 B높이의 차를 이용하여 알콜농도를 계산하는 농도계산단계(3)와;A concentration calculation step (3) of calculating the alcohol concentration by using the difference between the height of A and the height of B after correcting the speed of the ultrasonic wave by substituting the atmospheric temperature value after the step of measuring the height of the hydrometer (2);

상기 농도계산단계(3)에서 계산된 농도를 시간별로 저장하는 저장단계(4)로 구성된다.It consists of a storage step (4) storing the concentration calculated in the concentration calculation step (3) by time.

상기 수면높이측정단계(1)는 발효주탱크(10)에 장치(50)를 삽입하고, 수면이 어느정도 안정되었을 때 측정하는데, 이는 초음파센서가 감지하여 측정한다. In the water level measurement step (1), the device 50 is inserted into the fermented liquor tank 10 and measured when the water surface is stabilized to some extent, which is detected and measured by an ultrasonic sensor.

상기 수면높이측정단계(1)는 수초내에 여러번 측정을 수행한 후에 평균값으로 A높이를 산출한다.The water level measurement step (1) calculates the height A as an average value after performing the measurement several times within a few seconds.

상기 비중계높이측정단계(20)는 상기 수면높이측정단계(1)와 거의 동시에 이루어질 수 있는데, 흔들리는 것을 감안하여 여러번 측정을 수행한 후에 평균값으로 B높이를 산출한다. The hydrometer height measurement step 20 may be performed almost simultaneously with the sleep height measurement step (1), and the B height is calculated as an average value after performing several measurements in consideration of shaking.

상기 A높이와 B높이는 모두 뚜껑에서부터의 높이이고, 이둘의 차를 이용해서 비중계(110)가 얼마나 떠올랐는지 확인하여 비중을 측정하고 농도값으로 계산한다.The height A and B are both the height from the lid, and the difference between the two is used to determine how much the hydrometer 110 has risen, measure the specific gravity, and calculate the concentration value.

상기 장치(50)를 발효주탱크에 설치하기 위해서 거치대(200)가 형성되는데, 상기 거치대(200)에는 커버(130)와 연결되어 전원을 공급하거나, 신호를 무선신호로 대체하여 보낼 수 있는 기판이 외부에 별도로 컨트롤패널(210)로 구성될 수 있다.In order to install the device 50 in the fermented liquor tank, a cradle 200 is formed, and the cradle 200 is connected to the cover 130 to supply power or replace a signal with a wireless signal to send a substrate. It may be configured as a separate control panel 210 externally.

상기와 같이 자동저장된 농도데이터는 가장 적합한 발효시점을 알려줄 수 있고, 자동으로 연동된 장치에 의해서 발효환경을 조절할 수 있을 뿐만 아니라, 적합한 농도가 되었을 때에는 자동기계장치로 분배실로 이송하여 제품을 완성할 수 있도록 하는 효과가 발생한다. The automatically stored concentration data as above can inform the most suitable fermentation time, and the fermentation environment can be controlled by an automatically interlocked device. There is an effect that allows you to do it.

또한, 농도데이터를 측정하는 인력이 필요하지 않으므로, 인건비 절감의 효과도 발생한다.In addition, since the manpower to measure the concentration data is not required, the effect of labor cost reduction is also generated.

본 발명의 발효주 초음파 알콜농도 측정장치는 발효주탱크(10)에 거치할 수 있도록 형성되는 거치대(200)와;The ultrasonic alcohol concentration measuring device for fermented liquor of the present invention includes a cradle 200 formed to be mounted on the fermented liquor tank 10;

상기 거치대(200)의 끝단에 고정될 수 있도록 하는 장치(50)로 구성되되, Consisting of a device 50 that can be fixed to the end of the cradle 200,

상기 장치(50)는 내부에 초음파센서, 제어회로가 형성되는 커버(130)와;The device 50 includes a cover 130 having an ultrasonic sensor and a control circuit formed therein;

상기 커버(130)의 하단에 형성되고, 하단에 유동홀(102)이 형성되는 몸체(100)와;A body 100 formed at the lower end of the cover 130 and having a flow hole 102 formed at the lower end;

상기 몸체(100)의 내부에서 부유할 수 있도록 내부에 기체가 포함되고, 하단에 중량부가 형성되며, 상단에 지주가 형성되고, 상기 지주의 끝단에는 인디케이터(115)가 형성된다.A gas is included therein so that it can float in the interior of the body 100, a weight part is formed at the lower end, a post is formed at the upper end, and an indicator 115 is formed at the end of the post.

상기 거치대(200)는 발효주탱크(10)의 상단주연부에 걸릴 수 있도록 형성되는데, 클립식으로 형성되거나, 'ㄷ'자, 'ㄱ'자 형상으로 꺾여서 형성된다.The cradle 200 is formed to be caught on the upper circumference of the fermented liquor tank 10, and is formed in a clip type or bent in a'c' shape or a'a' shape.

상기 거치대(200)의 외부쪽에는 컨트롤패널(210)이 형성되어, 전원공급, 무선통신장치 및 저장메모리 등이 내부에 형성될 수 있다. A control panel 210 is formed on the outside of the cradle 200 so that a power supply, a wireless communication device, and a storage memory may be formed therein.

상기 장치(50)는 커버(130)와 몸체(100) 및 내부에 부유되는 비중계(110)로 구성되는데, 상기 커버(130)의 내부에는 초음파측정센서, 저장장치 등이 형성된다. The device 50 is composed of a cover 130, a body 100, and a hydrometer 110 floating therein, and an ultrasonic measuring sensor, a storage device, and the like are formed inside the cover 130.

상기 몸체(100)의 하단에는 발효주가 유입되도록 유동홀(102)이 형성되고, 설치할 때 내부로 발효주가 유입된다.A flow hole 102 is formed at the lower end of the body 100 so that the fermented wine is introduced, and when the fermented wine is installed, the fermented wine is introduced into the inside.

상기 몸체(100)의 내부에는 비중계(110)가 형성되는데, 상기 비중계(110)는 종래의 액체비중계로 내부에 기체가 포함되고, 하단에 중량부가 형성되며, 상부에 지주가 형성된다(통상적으로는 지주에 눈금이 형성되나, 본 발명에서는 눈금이 형성되지 않아도 된다).A hydrometer 110 is formed inside the body 100, the hydrometer 110 is a conventional liquid specific gravity meter, which contains gas, a weight part is formed at the lower end, and a post is formed at the top (typically The grid is formed on the post, but the grid does not need to be formed in the present invention).

상기 지주의 최상단에는 인디케이터(115)가 형성되는데, 이는 초음파센서로부터 조사되는 초음파를 반사하여 거리를 알려줄 수 있도록 형성되는 금속박판으로 형성된다.An indicator 115 is formed at the top of the post, which is formed of a thin metal plate that reflects ultrasonic waves irradiated from the ultrasonic sensor to inform the distance.

상기한 것과 같이, 거치대(200)를 들어서 몸체(100)와 비중계(110)를 꺼낸 후에 이를 커버(130)와 분리하여 간단하게 세척이 가능하여 매우 위생적이고, 간편하다.As described above, it is very hygienic and convenient because the holder 200 is lifted and the body 100 and the hydrometer 110 are taken out and then separated from the cover 130 to be cleaned simply.

본 발명의 바람직한 실시예로 형성된 발효주 초음파 알콜농도 측정장치 및 그 측정방법에 의하면 발효주 탱크 내부에 전자적으로 알코올 농도를 측정할 수 있어서 정확할 뿐만 아니라 실시간으로 데이터를 얻을 수 있고, 발효주탱크 내부에 직접 설치하기 때문에 시료를 채취할 필요가 없어서 편리하며, 간단한 센서구조여서 설치 및 조립이 간단하여 청소가 용이하며, 반영구적으로 사용할 수 있는 등의 효과가 발생한다.According to the ultrasonic alcohol concentration measuring device for fermented liquor formed in a preferred embodiment of the present invention and the measuring method thereof, it is possible to measure the alcohol concentration electronically in the fermented liquor tank, so that data can be obtained in real time as well as accurately and installed directly inside the fermented liquor tank Therefore, it is convenient because there is no need to collect a sample, and because it has a simple sensor structure, it is easy to install and assemble, so that cleaning is easy, and effects such as being able to be used semi-permanently occur.

본 발명은 첨부된 도면을 참조하여 바람직한 실시 예를 중심으로 기술되었지만 당업자라면 이러한 기재로부터 후술하는 특허청구범위에 의해 포괄되는 본 발명의 범주를 벗어남이 없이 다양한 변형이 가능하다는 것은 명백하다.Although the present invention has been described based on a preferred embodiment with reference to the accompanying drawings, it is apparent that a person skilled in the art can make various modifications without departing from the scope of the present invention covered by the claims to be described later from this description.

10 : 발효주탱크 50 : 장치
102 : 유동홀 110 : 비중계
115 : 인디케이터 130 : 커버
200 : 지지대 210 : 컨트롤패널10: fermented liquor tank 50: device
102: flow hole 110: hydrometer
115: indicator 130: cover
200: support 210: control panel

Claims (4)

삭제delete 삭제delete 삭제delete 커버와; 상기 커버의 하단에 형성되고, 하단에 유동홀이 형성되는 몸체와; 상기 몸체의 내부에서 부유할 수 있도록 내부에 기체가 포함되고, 하단에 중량부가 형성되며, 상단에 지주가 형성되고, 상기 지주의 끝단에는 인디케이터가 형성되는 일반적인 발효주 알콜농도 측정장치에 있어서,
수면높이(A높이)를 초음파센서로 여러번 측정하여 평균값으로 산출하고, 비중계높이(B높이)를 초음파센서로 여러번 측정하여 평균값으로 산출하여, 이 둘의 차이를 통해서 비중을 측정하고 농도값으로 계산하되,
상기 비중을 계산할 때 대기 온도값을 대입하여 초음파의 속도를 보정하여 계산하고,
상기 몸체에는 발효주탱크의 상단주연부에 걸릴 수 있도록 클립식, 'ㄷ'자 또는 'ㄱ'자 형상으로 꺾여서 거치대가 형성되며,
상기 커버에는 초음파측정센서 및 저장장치가 포함되는 것을 특징으로 하는 발효주 초음파 알콜농도 측정장치.With a cover; A body formed at the lower end of the cover and having a flow hole formed at the lower end; In a general fermented liquor alcohol concentration measuring apparatus in which gas is contained inside so as to float inside the body, a weight part is formed at the lower end, a post is formed at the upper end, and an indicator is formed at the end of the post,
The surface height (A height) is measured several times with an ultrasonic sensor and calculated as an average value, and the hydrometer height (B height) is measured several times with an ultrasonic sensor and calculated as an average value, and the specific gravity is measured through the difference between the two and calculated as a concentration value. But,
When calculating the specific gravity, the air temperature value is substituted and the speed of the ultrasonic wave is corrected and calculated,
The body is bent into a clip type,'C'or'ㄱ' shape so that it can be caught on the upper periphery of the fermented liquor tank, and a holder is formed,
An ultrasonic alcohol concentration measuring device for fermented liquor, characterized in that the cover includes an ultrasonic measuring sensor and a storage device.
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