SU857880A1 - Hot-wire anemometer - Google Patents
Hot-wire anemometer Download PDFInfo
- Publication number
- SU857880A1 SU857880A1 SU792848143A SU2848143A SU857880A1 SU 857880 A1 SU857880 A1 SU 857880A1 SU 792848143 A SU792848143 A SU 792848143A SU 2848143 A SU2848143 A SU 2848143A SU 857880 A1 SU857880 A1 SU 857880A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- amplifier
- output
- frequency
- controlled
- input
- Prior art date
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- Measuring Volume Flow (AREA)
Description
(54) ТЕРМОАНЕМОМЕТР(54) THERMO-ANEMOMETER
1one
Изобретение относитс к измерительной технике и может быть использовано дл измерени мгновенных значений скорости потока в аэро- и гидродинамических исследовани х .The invention relates to a measurement technique and can be used to measure instantaneous flow rates in aerial and hydrodynamic studies.
Известны термоанемометры посто нной температуры, содержащие измерительный мост с чувствительным элементом, контур регулировани 1.Thermoanemometers of constant temperature are known, containing a measuring bridge with a sensitive element, control loop 1.
Наиболее близким к предлагаемому по технической сущности вл етс термранемометр , содержащий измерительный мост с чувствительным элементом, соединенный через усилитель напр жени с усилител ми низкой и высокой частоты, и усилитель мощности 2.The closest to the proposed technical entity is a thermometer, containing a measuring bridge with a sensitive element, connected through a voltage amplifier with low and high frequency amplifiers, and a power amplifier 2.
Недостатком известного термоанемометра вл етс низка точность при измерении глубоких пульсаций скорости потока из-за малой крутизны контура регулировани по переменной составл ющей, что приводит к изменению перегрева, и по влению погрешности измерений.A disadvantage of the known hot-wire anemometer is the low accuracy in measuring deep pulsations of the flow velocity due to the small steepness of the control loop with respect to the variable component, which leads to a change in the superheat, and the occurrence of measurement errors.
Цель изобретени - повыщение точности при измерении глубоких пульсаций скорости потока.The purpose of the invention is to increase accuracy in measuring deep pulsations of the flow velocity.
Поставленна цель достигаетс тем, что термоанемометр снабжен соединенными последовательно управл емым делителем и функциональным преобразователем, при этом управл емый делитель подключен ко входу усилител высокой частоты, а функциональный преобразователь- к выходу усилител низкой частоты.This goal is achieved by the fact that the hot-wire anemometer is equipped with connected in series controlled divider and functional converter, wherein the controlled divider is connected to the input of the high-frequency amplifier and the functional converter to the output of the low-frequency amplifier.
На чертеже схематически изображено предлагаемое устройство.The drawing schematically shows the proposed device.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792848143A SU857880A1 (en) | 1979-12-07 | 1979-12-07 | Hot-wire anemometer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792848143A SU857880A1 (en) | 1979-12-07 | 1979-12-07 | Hot-wire anemometer |
Publications (1)
Publication Number | Publication Date |
---|---|
SU857880A1 true SU857880A1 (en) | 1981-08-23 |
Family
ID=20862961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU792848143A SU857880A1 (en) | 1979-12-07 | 1979-12-07 | Hot-wire anemometer |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU857880A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995033186A1 (en) * | 1994-06-01 | 1995-12-07 | Peking University | Automatic offset control for constant temperature anemometer |
-
1979
- 1979-12-07 SU SU792848143A patent/SU857880A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995033186A1 (en) * | 1994-06-01 | 1995-12-07 | Peking University | Automatic offset control for constant temperature anemometer |
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