SU132423A1 - Moisture measuring device - Google Patents

Moisture measuring device

Info

Publication number
SU132423A1
SU132423A1 SU655528A SU655528A SU132423A1 SU 132423 A1 SU132423 A1 SU 132423A1 SU 655528 A SU655528 A SU 655528A SU 655528 A SU655528 A SU 655528A SU 132423 A1 SU132423 A1 SU 132423A1
Authority
SU
USSR - Soviet Union
Prior art keywords
measuring device
moisture measuring
bridge circuit
measuring
sensor
Prior art date
Application number
SU655528A
Other languages
Russian (ru)
Inventor
Г.В. Вартанян
н Г.В. Вартан
Original Assignee
Г.В. Вартанян
н Г.В. Вартан
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 Г.В. Вартанян, н Г.В. Вартан filed Critical Г.В. Вартанян
Priority to SU655528A priority Critical patent/SU132423A1/en
Application granted granted Critical
Publication of SU132423A1 publication Critical patent/SU132423A1/en

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  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Description

Известны устройства дл  определени  влажности различных материалов по величипе сопротивлени  переменному току, выполненные и виде питаемой переменным током мостовой схемы с присоедине)иым к ней датчиком, между адехтродами которого помещают испытуемый материал, и стрелочного измерительного прибора, присоединенного к датчику. Недостаток известных устройств заключаетс  в том, что они не универсальны, так как не позвол ют проводить измерени  ими степени созревани  сельскохоз йственных к льтур, степени их повреждени , концентрании солевых растворов, иггенснвности фотосинтеза иDevices are known for determining the humidity of various materials by the magnitude of the resistance to alternating current, made both by the type of an alternating current fed bridge circuit with an attached sensor to it, between which addetrodes the test material is placed, and a needle measuring instrument connected to the sensor. A disadvantage of the known devices is that they are not universal, since they do not allow them to measure the degree of maturation of agricultural crops, the degree of their damage, the concentration of salt solutions, the iggeness of photosynthesis and

КИСЛОТНОСТИ.ACIDITY.

В онисываемо.м изобретении этот недостаток странен тем, что к мостовой схеме его через переключатель присоединен второй датчик сопротивлени  ДЛЯ испытуемых материалов, измерительный прибо;.) присоединен к датчику через уси..-1ь, а н цень измерительного прибора через переключатели и выпр мители последовательно присоединены два датчика сопротивлени , нричем дл  питани  мостовой схемы применен генератор высокой частоты.In the invention of this invention, this drawback is strange in that a second resistance sensor FOR test materials, a measuring device; is connected to the bridge circuit ;.) is connected to the sensor via usi ..- 1b, and at the price of the measuring device through switches and rectifiers Two resistance sensors are connected in series, and a high-frequency generator is used to power the bridge circuit.

На чертеже показана принципиальна  схема устройства.The drawing shows a schematic diagram of the device.

Генератор высокой частоты / через трансформатор 2 подключен к нз.мерительной мостовой схеме 3, на выходе которой включен двухкаскадный усилитель 4. Через трансформатор 5 с анодной цепи усилител  4 через выар мите, 6 ц. 7 подключен измерительный прибор 8.The high-frequency generator / through transformer 2 is connected to the measuring bridge circuit 3, the output of which includes a two-stage amplifier 4. Through a transformer 5 from the anode circuit of amplifier 4 through the output, 6 c. 7 is connected to the measuring device 8.

Изменение диапазона измерений и плавное изменение характеристики .мостовой схемы осуихествл етс  сопротив.аени мн ,9-17 включаемыми переключателем 18,A change in the measuring range and a smooth change in the characteristic of the bridge circuit is the characteristic of resistance, mn, 9-17 switched on by switch 18,

Пр измерении активного и емкостного сопротивлени  ло мостовой схе.ме датчик сопротивлени  подключаетс  через гнезда 19 и 20. НерекЛЕочателе .м 21 параллельно датчику включаютс  сопротивление 22, уменьнтаюшее нелинейпость шкалы прибора Л. i ко; денсаторы 25, 21 и 25.When measuring the active and capacitive impedances of a bridge circuit. The impedance sensor is connected through slots 19 and 20. The relay 22 connects impedance 22 in parallel with the transducer, reducing the nonlinearity of the instrument scale L. i co; densators 25, 21 and 25.

SU655528A 1960-02-22 1960-02-22 Moisture measuring device SU132423A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU655528A SU132423A1 (en) 1960-02-22 1960-02-22 Moisture measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU655528A SU132423A1 (en) 1960-02-22 1960-02-22 Moisture measuring device

Publications (1)

Publication Number Publication Date
SU132423A1 true SU132423A1 (en) 1960-11-30

Family

ID=48403458

Family Applications (1)

Application Number Title Priority Date Filing Date
SU655528A SU132423A1 (en) 1960-02-22 1960-02-22 Moisture measuring device

Country Status (1)

Country Link
SU (1) SU132423A1 (en)

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