Inzwa yokucindezela/i-Transmitter/Transducer

Abaningi bangase badideke ngomehluko phakathi, inzwa yokucindezela, i-presser transducer kanye ne-pressure transmitter ngezinga elihlukahlukene. Lawo magama amathathu ayashintshana ngaphansi komongo othile. Izinzwa zokucindezela kanye nama-transducer angahlukaniswa ngesignali yokuphumayo. Eyangaphambili ingachazwa ngesignali yokuphuma engu-4-20mA kuyilapho kamuva ngesignali ye-millivolt. Ngamanye amazwi, igama elifanele linganqunywa ngokwesiginali yokuphumayo kanye nohlelo lokusebenza.

Inzwa Yokucindezela

Inzwa yokucindezela igama elivamile lazo zonke izinhlobo zengcindezi, idivayisi esetshenziselwa ukukala ingcindezi. Ngokuvamile, isignali ye-millivolt ephumayo igcina isignali eqinile ngaphandle kokulahlekelwa uma idivayisi enjalo ifakwe amafidi angu-10-20 ukusuka ku-electronics. Ukunikezwa kwe-5VDC enesignali yokuphuma engu-10mV/V kukhiqiza isignali yokuphuma engu-0-50mV. Ubuchwepheshe obudala bukhiqiza kuphela i-2-3mV/V (ama-millivolts ngevolthi ngayinye) kuyilapho i-state-of-the-art ikwazi ukukhiqiza i-20mV/V ngokuthembekile. I-Millivolt ikhombisa izikhala ezisele zonjiniyela ukuze balawule isignali yokuphumayo ngokwezidingo ezithile zesistimu futhi banciphise usayizi wephakheji kanye nezindleko.

I-Pressure Transducer

I-pressure transducer okukhiphayo izinga eliphezulu le-voltage noma isignali yefrikhwensi ehlanganisa u-0.5 4.5 V ratiometric, 1 - 5 V kanye no-1 - 6 kHz. I-singal ephumayo ilingana nokuhlinzekwa ngokujwayelekile. Amasiginali okukhipha amandla kagesi ayakwazi ukunikeza ukusetshenziswa okuphansi kwamanje kwemishini esetshenziswa yi-batter ekude. Ukunikezwa kwamandla kagesi asukela ku-8-28 VDC kudinga ukunikezwa okulawulwayo okungu-5VDC, ngaphandle kokuphumayo okungu-0.5 - 4.5V. Inkinga ekhohlisayo yamasiginali okukhipha amandla kagesi amadala ayikho kokuthi "ziro bukhoma", kukhona isignali lapho inzwa ingaphansi kwengcindezi enguziro. Isistimu endala ivamise ukuhluleka ukuthola umehluko phakathi kwenzwa ehlulekile engenakho okukhiphayo kanye nengcindezi enguziro.

I-Pressure Transmitter

I-pressure transmitter isebenza ngesilinganiso samanje sedivayisi esikhundleni se-voltage. Uhlamvu olusobala kakhulu isignali ephumayo yamanje engu-4-20mA. I-Lonnmeterama-pressure transmitterszenzelwe ukuqapha ingcindezi yemikhumbi, amapayipi noma amathangi ngesikhathi sangempela. Ama-4-20mA ama-pressure transmitters ahlinzeka ngokuvikeleka okuhle komsindo kagesi (EMI/RFI), futhi azodinga ukunikezwa kwamandla okungu-8-28VDC. Ngoba isignali ikhiqiza isimanje, ingadla impilo yebhethri eyengeziwe uma isebenza ngengcindezi egcwele.

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