M'misonkhano yopanga mankhwala, chiŵerengero cha mpweya wakuthupi chimatsimikizira ubwino wa mankhwala; Pamalo owunikira zachilengedwe, deta yotulutsa mpweya wotulutsa mpweya ikugwirizana ndi mphamvu ya kayendetsedwe ka chilengedwe ... Muzochitika izi,Thermal gas mass flow metersakhala "chinthu chotentha" m'makampani chifukwa cha kuthekera kwawo kuyeza bwino kutuluka kwa gasi popanda kutentha ndi kukakamizidwa. Ndipo makina ozungulira kumbuyo kwake ndi "ubongo wanzeru" womwe umakwaniritsa izi. Lero, tikutengerani kuti mufufuze!
Thermal gas mass flowmeter idapangidwa kutengera mfundo ya kufalikira kwamafuta, ndipo imagwiritsa ntchito njira yosiyana ya kutentha kosalekeza kuyeza bwino mpweya. Ili ndi maubwino ang'onoang'ono, kuchuluka kwa digito, kukhazikitsa kosavuta, komanso kuyeza kolondola.
Circuit core module:
Sensor yozungulira:
Gawo la sensa limapangidwa ndi masensa awiri okhudzana ndi kutentha kwa platinamu. Chidacho chikagwira ntchito, sensa imodzi imayesa kutentha kwapakati T1; Sensa ina imadzitentha mpaka kutentha kwambiri kuposa kutentha kwapakati T2 ndipo imagwiritsidwa ntchito kuzindikira kuthamanga kwamadzimadzi, komwe kumatchedwa velocity sensor. Kutentha Δ T=T2-T1, T2>T1. Madzi akamadutsa, mamolekyu a gasi amawombana ndi sensa ndikuchotsa kutentha kwa T2, zomwe zimapangitsa kuti kutentha kwa T2 kuchepe. Kuti Δ T ikhale yosasinthasintha, mphamvu zamagetsi za T2 ziyenera kuwonjezeredwa. Kuthamanga kwa mpweya wothamanga kwambiri, kutentha kumachotsedwa. Pali mgwirizano wokhazikika pakati pa kuchuluka kwa gasi ndi kutentha kowonjezereka, yomwe ndi mfundo ya kusiyana kwa kutentha kosalekeza.
Ma Signal conditioning circuit:
Zizindikiro zomwe zimatuluka kuchokera ku masensa nthawi zambiri zimakhala ndi zonyansa monga kusokoneza ma electromagnetic komanso phokoso lachilengedwe. Dongosolo lowongolera ma siginecha lili ngati "mbuye woyeretsa chizindikiro", choyamba kugwiritsa ntchito mlatho wa Wheatstone kukulitsa ma siginecha ofooka ndi makumi kapena mazana nthawi, kukulitsa mphamvu yazizindikiro; Kenaka, kupyolera mu sefa yotsika-pass, zizindikiro zowonongeka zowonongeka zimasefedwa ngati fyuluta, kusunga zizindikiro zogwira mtima zokhudzana ndi kuthamanga kwa mpweya. Pambuyo pakuwongolera kotereku, chizindikirocho chimakhala choyera komanso chokhazikika, ndikuyika maziko owerengera molondola kuchuluka kwa gasi.
Kukonzekera kwa data ndi kulumikizana:
Chizindikiro chokhazikika chimalowa mu dera lokonzekera deta ndipo chimalamulidwa ndi microprocessor yapamwamba kwambiri. Microprocessor imatembenuza mwachangu komanso molondola chizindikiro cha kusiyana kwa kutentha kukhala mtengo wothamanga wa gasi kutengera algorithm yokhazikitsidwa kale. Pagawo lotulutsa, ma protocol angapo olankhulirana amathandizidwa, ndipo ma analogi a 4-20mA ndi oyenera machitidwe azikhalidwe zamafakitale. Kulankhulana kwa HART, alamu yotumizirana mauthenga, kutumiza kwa Efaneti, nsanja ya 4G yazinthu zamtaneti, Modbus RTU digito yolumikizana ndi protocol imathandizira kusinthana kwa data ndi zida zanzeru ndi makompyuta apamwamba, kuzindikira kuwunika kwakutali ndi kuwongolera zokha, ndikupangitsa kuti ma data otaya gasi "ayende".
TheThermal gas mass flowmeteropangidwa ndi Angji Instrument ali ndi makina ozungulira omwe, okhala ndi mphamvu yoyezera bwino kwambiri ya ± 0.2%, amawongolera kusinthasintha kwakuyenda kwa gasi mkati mwazocheperako, kuwongolera kwambiri kukhazikika kwa njira zopangira chip. Pankhani ya metering ya gasi, yomwe ikukumana ndi zovuta zovuta komanso kusintha kwa kutentha kwa mapaipi, kayendedwe ka kayendedwe ka mpweya wa mpweya wotentha kumakhala ndi ubwino wambiri (mpaka 100: 1). Kaya ndi kuzindikira kutayikira kwa mapaipi otsika kapena kukhazikika kwa malonda, imatha kuyeza molondola ndikuthandizira mabizinesi kuti azitha kuyendetsa bwino mphamvu zamagetsi.
TheThermal gas mass flowmeterdera, lomwe lili ndi mapangidwe ake okongola komanso ntchito zamphamvu, limapereka njira zodalirika zoyezera mpweya wa gasi pakupanga mafakitale, kuyang'anira zachilengedwe ndi zina. Shanghai Angji Instrument Co., Ltd. ili ndi mabwalo otentha, kuphatikiza pulagi yophatikizika, mapaipi, ndi khoma logawanika lokhazikitsidwa, ndipo limathandizira makonda pafoni.
Nthawi yotumiza: Jun-05-2025