00125366burkert寶德6014系列電磁閥小口徑00125366
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訪問次數(shù):301更新時間:2017-11-07 10:59:15
burkert8205調(diào)節(jié)器寶德
超聲波以合適的角度射入到流體中,需把元件放入聲楔中,構(gòu)成換能器整體(又稱探頭)。聲楔的材料不僅要求強度高、耐老化,而且要求超聲波經(jīng)聲楔后能量損失小即透射系數(shù)接近。超聲波以某一角度射入流體中傳播,然后由接收換能器接收,并經(jīng)壓電元件變?yōu)殡娔?,以便檢測。必須有完善的測量線路才能實現(xiàn),這也正是超聲波流量計只有在集成電路技術(shù)迅速發(fā)展的前題下才能得到實際應(yīng)用的原因。
burkert8205調(diào)節(jié)器寶德
In addition, the energy loss of the ultrasonic acoustic wedge is very close to that of the transmission coefficient. The ultrasound is injected into the fluid at a certain Angle, and then it is received by the transducer and the piezoelectric element is turned into electricity to detect it. It is necessary to have a complete measuring line to realize this, which is why the ultrasonic flowmeter can only be applied in the case of the rapid development of integrated circuit technology.
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