HONEYWELL DCS卡件 51304337-150 siemens PLC HONEYWELL DCS 80363969-100 DCS 51304362-350 DCS 51309204-175 /MCTLPA02

HONEYWELL DCS卡件 51304337-150 siemens PLC HONEYWELL DCS 80363969-100 DCS 51304362-350 DCS 51309204-175 /MCTLPA02

HONEYWELL DCS卡件 51304337-150 siemens PLC HONEYWELL DCS 80363969-100 DCS 51304362-350 DCS 51309204-175 /MCTLPA02

1、擴(kuò)散硅壓力傳感器

擴(kuò)散硅壓力傳感器其工作原理是被測(cè)介質(zhì)的壓力直接作用于傳感器的膜片上(不銹鋼或陶瓷)，使膜片產(chǎn)生與介質(zhì)壓力成正比的微位移，使傳感器的電阻值發(fā)生變化，和用電子線路檢測(cè)這一變化，并轉(zhuǎn)換輸出一個(gè)對(duì)應(yīng)于這一壓力的標(biāo)準(zhǔn)測(cè)量信號(hào)。

2、應(yīng)變片(力學(xué))壓力傳感器

力學(xué)傳感器的種類(lèi)繁多，如電阻應(yīng)變片壓力傳感器、高溫壓力傳感器、半導(dǎo)體應(yīng)高溫壓力變送器變片壓力傳感器、壓阻式壓力傳感器、電感式壓力傳感器、電容式壓力傳感器、諧振式壓力傳感器及電容式加速度傳感器等。但應(yīng)用的是壓阻式壓力傳感器，它具有極低的價(jià)格和較高的精度以及較好的線性特性。

3、藍(lán)寶石壓力傳感器

利用應(yīng)變電阻式工作原理，采用硅- 藍(lán)寶石作為半導(dǎo)體敏感元件，具有的計(jì)量特性。藍(lán)寶石系由單晶體絕緣體元素組成，不會(huì)發(fā)生滯后、疲勞和蠕變現(xiàn)象;藍(lán)寶石比硅要堅(jiān)固，硬度更高，不怕形變;藍(lán)寶石有著非常好的彈性和絕緣特性(1000 OC 以?xún)?nèi))，因此，利用硅- 藍(lán)寶石制造的半導(dǎo)體敏感元件，對(duì)溫度變化不敏感，即使在高溫條件下，也有著很好的工作特性;藍(lán)寶石的抗輻射特性*;另外，硅- 藍(lán)寶石半導(dǎo)體敏感元件，無(wú)防爆壓力變送器p-n 漂移，因此，從根本上簡(jiǎn)化了制造工藝，提高了重復(fù)性，確保了高成品率。用硅- 藍(lán)寶石半導(dǎo)體敏感元件制造的壓力傳感器和變送器，可在zui惡劣的工作條件下正常工作，并且可靠性高、精度好、溫度誤差極小、性?xún)r(jià)比高。

4、陶瓷壓力傳感器

抗腐蝕的陶瓷壓力傳感器沒(méi)有液體的傳遞，壓力直接作用在陶瓷膜片的前表面，使膜片產(chǎn)生微小的形變，厚膜電阻印刷在陶瓷膜片的背面，連接成一個(gè)惠斯通電橋(閉橋)，由于壓敏電阻的壓阻效應(yīng)，使電橋產(chǎn)生一個(gè)與壓力成正比的高度線性、與激隔爆溫度變送器勵(lì)電壓也成正比的電壓信號(hào)，標(biāo)準(zhǔn)的信號(hào)根據(jù)壓力量程的不同標(biāo)定為2.0 / 3.0 / 3.3 mV/V等，可以和應(yīng)變式傳感器相兼容。通過(guò)激光標(biāo)定，傳感器具有很高的溫度穩(wěn)定性和時(shí)間穩(wěn)定性，傳感器自帶溫度補(bǔ)償0 ～70℃，并可以和絕大多數(shù)介質(zhì)直接接觸。

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