Mitundu ya ma transmitters amphamvu

Kudziwonetsa kosavuta kwa makina osindikizira

Monga sensa yokakamiza yomwe kutulutsa kwake kumakhala chizindikiro chokhazikika, chotengera choponderezedwa ndi chida chomwe chimavomereza kusinthasintha kwa mphamvu ndikuchisintha kukhala chizindikiro chodziwika bwino. Ikhoza kutembenuza magawo amagetsi amagetsi a mpweya, madzi, ndi zina zomwe zimamveka ndi sensa yonyamula katundu kukhala zizindikiro zamagetsi zamagetsi (monga 4-20mADC, etc.) kuti apereke zida zachiwiri monga kusonyeza ma alarm, zojambula, olamulira, etc.

Gulu la ma transmitters othamanga

Nthawi zambiri ma transmitters omwe timakamba amagawidwa motengera mfundoyi:
Ma capacitive pressure transmitters, resistive pressure transmitters, inductive pressure transmitters, semiconductor pressure transmitters, ndi piezoelectric pressure transmitters poyezera pafupipafupi. Mwa iwo, ma resistive pressure transmitters ndi omwe amagwiritsidwa ntchito kwambiri. Capacitive pressure transmitter imatenga transmitter ya Rosemount's 3051S ngati woyimira zinthu zapamwamba kwambiri.

Ma transmitters amatha kugawidwa kukhala zitsulo, ceramic, diffused pakachitsulo, monocrystalline pakachitsulo, safiro, sputtered filimu, etc. malinga ndi kukakamiza tcheru zigawo zikuluzikulu.

• Metal pressure transmitter imakhala yosalondola, koma imakhala ndi kutentha pang'ono, ndipo ndi yoyenera kumadera omwe ali ndi kutentha kwakukulu komanso zofunikira zochepa zolondola.
• Ceramic pressure sensors imakhala yolondola bwino, koma imakhudzidwa kwambiri ndi kutentha. Ma Ceramics alinso ndi mwayi wokana kukana komanso kukana dzimbiri, zomwe zingagwiritsidwe ntchito poyankha.
• Kulondola kwa kufalikira kwa silicon yofalikira ndikokwera kwambiri, komanso kutsetsereka kwa kutentha kulinso kwakukulu, kotero kulipidwa kwa kutentha kumafunika nthawi zambiri musanagwiritse ntchito. Komanso, ngakhale pambuyo pa kubwezera kwa kutentha, kupanikizika pamwamba pa 125 ° C sikungayesedwe. Komabe, kutentha kwa firiji, mphamvu ya sensitivity ya silicon yofalikira imakhala nthawi 5 kuposa ya ceramic, motero imagwiritsidwa ntchito poyezera molondola kwambiri.
• Single crystal silicon pressure transmitter ndiye sensor yolondola kwambiri pamachitidwe amakampani. Ndi mtundu wokwezedwa wa silicon wofalikira. Inde, mtengo umakwezedwanso. Panopa, Yokogawa wa ku Japan ndi woimira m'munda wa monocrystalline silicon kuthamanga.
• Sapphire pressure transmitter sagwirizana ndi kusintha kwa kutentha, ndipo imakhala ndi makhalidwe abwino ogwira ntchito ngakhale pansi pa kutentha kwakukulu; safiro ali ndi mphamvu yolimbana ndi ma radiation; palibe pn drift; imatha kugwira ntchito moyenera pansi pazikhalidwe zoyipa kwambiri ndipo ndi yodalirika Kuchita bwino kwambiri, kulondola kwabwino, cholakwika chochepa cha kutentha, komanso magwiridwe antchito okwera mtengo.
• The sputtering woonda film pressure transmitter alibe zomatira, ndipo amasonyeza apamwamba kukhazikika kwa nthawi yaitali ndi kudalirika kuposa zomata kupsyinjika gauge sensa; sichimakhudzidwa ndi kutentha: kutentha kukasintha 100 ℃, zero drift ndi 0.5% yokha. Kutentha kwake kumakhala kopambana kwambiri kuposa kufalikira kwa silicon pressure sensor; Komanso, akhoza mwachindunji kukhudzana ndi ambiri zikuwononga TV.

Mfundo zamitundu yosiyanasiyana yamagetsi opatsirana

• Mfundo ya capacitive pressure transmitter.

Pamene kupsyinjika kumachitika mwachindunji pamwamba pa diaphragm yoyezera, diaphragm imapanga kapindika kakang'ono. Kuzungulira kolondola kwambiri pa diaphragm yoyezera kumasintha kapindika kakang'ono kameneka kukhala kawongolero kakang'ono kolingana ndi kukakamizidwa komanso kolingana ndi voteji yachisangalalo. Signal, ndiyeno gwiritsani ntchito chipangizo chodzipatulira kuti musinthe siginecha yamagetsi iyi kukhala chizindikiro chamakampani 4-20mA kapena siginecha yamagetsi ya 1-5V.

• Mfundo ya diffused silicon pressure transmitter

Kuthamanga kwa sing'anga yoyezera kumachita mwachindunji pa diaphragm ya sensa (kawirikawiri diaphragm ya 316L), kuchititsa kuti diaphragm itulutse micro displacement molingana ndi kukakamizidwa kwa sing'anga, kusintha mtengo wotsutsa wa sensa, ndikuwuzindikira ndi Wheatstone circuit Kusintha uku, ndikusintha ndi kutulutsa chizindikiro choyezera chofanana ndi kupanikizika uku.

• Mfundo ya monocrystalline silicon pressure transmitter

Piezoresistive pressure sensors amapangidwa pogwiritsa ntchito piezoresistive zotsatira za single crystal silicon. Single crystal silicon wafer imagwiritsidwa ntchito ngati chinthu chotanuka. Kupanikizika kukasintha, kristalo imodzi ya silicon imapanga kupsyinjika, kotero kuti kukana kwapang'onopang'ono komwe kumafalikira mwachindunji kumapanga kusintha kolingana ndi kuthamanga kwake, ndiyeno chizindikiro chofananira chamagetsi chimapezeka ndi dera la mlatho.

• Mfundo ya ceramic pressure transmitter

Kupanikizika kumachita mwachindunji kutsogolo kwa ceramic diaphragm, kuchititsa kupindika pang'ono kwa diaphragm. The wandiweyani filimu resistor amasindikizidwa kumbuyo kwa ceramic diaphragm ndi kulumikizidwa ku mlatho wa Wheatstone (mlatho wotsekedwa) chifukwa cha piezoresistive zotsatira za varistor , Mlathowu umapanga chizindikiro cha voteji chozungulira kwambiri chofanana ndi kupanikizika komanso molingana ndi mphamvu yamagetsi. Nthawi zambiri amagwiritsidwa ntchito poyezera kuthamanga kwa ma compressor a mpweya, ma ceramics ambiri amagwiritsidwa ntchito.

• Mfundo ya strain gauge pressure transmitter

Ma transmitters omwe amagwiritsidwa ntchito kwambiri ndi ma strain gauge ndi ma semiconductor strain gauges. Metal resistance strain gauge ndi mtundu wa chipangizo chosavuta kumva chomwe chimasintha kusintha kwazovuta pagawo loyesa kukhala chizindikiro chamagetsi. Pali mitundu iwiri ya chitsulo chopimira ndi chitsulo chojambulira chachitsulo. Nthawi zambiri strain gauge imamangirizidwa mwamphamvu ku matrix a strain mechanical kudzera pa zomatira zapadera. Pamene masanjidwewo amasinthidwa kupsinjika, kukana kupsinjika kwamagetsi kumasokonekera, kotero kuti kukana kwa mtengo wamtunduwu kumasintha, kotero kuti Voltage yomwe imagwiritsidwa ntchito pazotsutsa imasintha. Ma strain gauge pressure transmitters ndi osowa kwambiri pamsika.

• Sapphire pressure transmitter

Sapphire pressure transmitter imagwiritsa ntchito mfundo yolimbana ndi zovuta, imagwiritsa ntchito zida zodziwika bwino za silicon-sapphire, ndikusintha chikwangwanicho kukhala chizindikiro chamagetsi chokhazikika kudzera pagawo lodzipatulira la amplifier.

• Ma sputtering film pressure transmitter

Chiwopsezo cha sputtering pressure sensor chimapangidwa ndi ukadaulo wa microelectronics, kupanga mlatho wolimba komanso wokhazikika wa Wheatstone pamwamba pa zotanuka zosapanga dzimbiri zosapanga dzimbiri diaphragm. Kupanikizika kwa sing'anga yoyezera kumagwira ntchito pa diaphragm yachitsulo chosapanga dzimbiri, mlatho wa Wheatstone mbali inayo umatulutsa chizindikiro chamagetsi chofanana ndi kuthamanga. Chifukwa cha kukana kwake kwabwino, makanema otayidwa nthawi zambiri amagwiritsidwa ntchito nthawi zambiri ndi kupsinjika pafupipafupi, monga zida za hydraulic.

Njira zodzitetezera posankha ma transmitter

• Kusankha kwa mtengo wa ma transmitter:

Choyamba dziwani kuchuluka kwa kuchuluka kwa mphamvu yoyezera mu dongosolo. Nthawi zambiri, muyenera kusankha chowulutsira chomwe chili ndi mphamvu zambiri zomwe zimakhala zazikulu kuwirikiza nthawi 1.5 kuposa kuchuluka kwake, kapena kusiya kuthamanga kwanthawi zonse kugwera pa chopatsira chapakati. 1/3 ~ 2/3 yamtundu wabwinobwino ndi njira wamba.

• Ndi mtundu wanji wa pressure medium:

Zamadzimadzi zowoneka bwino ndi matope zidzatsekereza madoko othamanga. Kodi zosungunulira kapena zinthu zowononga zimawononga zinthu zomwe zili mu chopatsira zomwe zimalumikizana mwachindunji ndi media awa.
Zomwe zimagwiritsidwa ntchito pamagetsi ambiri omwe amalumikizana ndi sing'anga ndi 316 chitsulo chosapanga dzimbiri. Ngati sing'angayo siyingawononge chitsulo chosapanga dzimbiri cha 316, ndiye kuti ma transmitters onse opanikizika ndi oyenera kuyeza kupanikizika kwa sing'anga;
Ngati sing'angayo ikuwononga zitsulo zosapanga dzimbiri 316, chisindikizo chamankhwala chiyenera kugwiritsidwa ntchito, ndipo muyeso wosalunjika uyenera kugwiritsidwa ntchito. Ngati chubu la capillary lodzazidwa ndi mafuta a silikoni likugwiritsidwa ntchito kuwongolera kuthamanga, limatha kuletsa chopatsira mpweya kuti chisawonongeke ndikutalikitsa moyo wa chopatsira mpweya.

• Ndi kulondola kotani kwa transmitter kumafunika:

Kulondola kumatsimikiziridwa ndi: kusagwirizana, hysteresis, kusabwerezabwereza, kutentha, zero offset scale, ndi kutentha. Kukwera kulondola, ndikukwera mtengo. Nthawi zambiri, kulondola kwa silicon pressure transmitter yofalikira ndi 0.5 kapena 0.25, ndipo capacitive kapena monocrystalline silicon pressure transmitter imakhala ndi kulondola kwa 0.1 kapena 0.075.

• Njira yolumikizira ma transmitter:

Nthawi zambiri, ma transmitters amaikidwa pa mapaipi kapena akasinja. Zoonadi, gawo laling'ono la iwo limayikidwa ndikugwiritsidwa ntchito ndi ma flow meters. Nthawi zambiri pamakhala mitundu itatu yoyika ma transmitters: ulusi, flange, ndi clamp. Choncho, musanasankhe chopatsira kuthamanga, njira yolumikizira iyeneranso kuganiziridwa. Ngati ndi ulusi, m'pofunika kudziwa mfundo za ulusi. Kwa ma flanges, m'pofunika kuganizira za mawonekedwe a flange a m'mimba mwake.

Chiyambi chamakampani a Pressure transmitter

Pafupifupi mayiko 40 padziko lonse lapansi akuchita kafukufuku ndi kupanga masensa, omwe United States, Japan, ndi Germany ndi zigawo zomwe zimakhala ndi sensa yayikulu kwambiri. Maiko atatuwa palimodzi akupitilira 50% ya msika wapadziko lonse lapansi wa sensor.

Masiku ano, msika wapadziko lonse lapansi wapadziko lonse lapansi ndi msika wokhwima womwe uli ndi msika waukulu kwambiri. Komabe, udindo waukulu ndi mayiko akunja omwe akuimiridwa ndi Emerson, Yokogawa, Siemens, ndi zina zotero. Zogulitsa zamtundu wa Brand zimatengera pafupifupi 70% ya msika ndipo zimakhala ndi mwayi wokwanira muzojambula zazikulu ndi zazing'ono.

Izi ndichifukwa cha zotsatira za dziko langa kutengera koyambirira kwa njira ya "msika waukadaulo", yomwe idagunda kwambiri mabizinesi aboma adziko langa ndipo nthawi ina idalephera, koma nthawi yomweyo, opanga ena, omwe akuimiridwa ndi mabizinesi apadera aku China, mwakachetechete Kuwonekera ndikukula mwamphamvu. Msika wamtsogolo waku China waku China wadzaza ndi zosadziwika zatsopano.