Industrial Automation Control System Pressure Transmitter Measuring Principple And Classification

Nyob rau hauv lub niaj hnub kev lag luam automation tswj system, siab transducer siv nyob rau hauv qhov xav tau kev saib xyuas seem, los yog raws li ib tug tawm tswv yim teeb liab ntawm lub teeb liab sau cov txheej txheem kev soj ntsuam cov nyhuv, ua tiav kev nyab xeeb thiab kev tswj thiab kev tswj.
Vim tias cov yam ntxwv ntawm qhov nruab nrab, qhov sib txawv ntawm daim ntawv thov, peb yuav tsum muab cov kev ntsuas siab ntsuas lub hauv paus ntsiab lus thiab daim ntawv thov teb rau kev tsom xam ntawm qhov tsis ua haujlwm ntawm lub siab transmitter thiab yog vim li cas, nrhiav kev daws teeb meem thiab siv tau zoo, ua los ntawm kev xaiv rau kev teeb tsa, los ntawm daim ntawv thov. mus rau lub rationality ntawm cov txij nkawm, thiab muaj peev xwm daws tau qhov teeb meem.
Lub hauv paus ntsiab lus ntawm kev ntsuas lub siab transmitter tsis yog qhov tseem ceeb ntawm tsab xov xwm no, tsuas yog nyob rau hauv lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm lub siab transmitter thiab kev faib tawm luv luv.
Hauv cov ntsiab lus yooj yim, yog kev siv cov sensors, siab transmitter demodulator, tam sim no ntes, amplifier thiab lwm yam, yuav ua rau cov kev hloov ntawm cov teeb liab mus rau tus qauv ntawm cov maub los tau nyeem, 4 20 ma DC tam sim no teeb liab yog qhov tseem ceeb rau, kuj muaj. 1 5 VDC voltage signals lossis kev sib txuas lus, thiab lwm yam.
Hom kev xa tawm siab, siab tuaj yeem muab faib ua: (1) yooj yim kuj transmitter, feem ntau yog los ntawm semiconductor siab rhiab cov ntaub ntawv nyob rau hauv compression, vim piezoresistive nyhuv ntawm siab- rhiab heev kuj, resistivity hloov, ua tus choj ua rau lub teeb liab voltage yog proportional rau lub siab, uas ntsuas qhov kev hloov ntawm lub siab.
(2) lub capacitive transducer, yog siv los ntsuas diaphragm thiab ntawm ob sab ntawm lub rwb thaiv tsev ntawm lub electrodes ntawm lub capacitor, ob lub siab ntsuas nruab nrab ntawm lub siab thiab tsis tshua muaj siab chamber, cov nyhuv ntawm ob sab ntawm lub rhiab ntsiab cais diaphragm, diaphragm tuaj yeem tsim kev hloov pauv, raws li qhov sib txawv ntawm ob sab ntawm lub peev xwm hloov pauv, kev hloov pauv tus nqi capacitance yuav raug hloov mus rau hauv tus maub los ntawm oscillation kev daws teeb meem tuaj yeem nyeem tau.
(3) lub inductance siab transmitter, feem ntau muaj ib tug pointer hom kev ntsuas siab thiab hluav taws xob tej thaj chaw deb kis qhov chaw.
Thaum lub siab ntsuas lub caij nplooj ntoos hlav tube deformation tshwm sim, cov tub ntxhais hlau hloov pauv yuav tshwm sim hauv inductance coil, inductance hloov pauv, tus nqi hloov pauv hloov mus rau dc tam sim no / voltage teeb liab.
(4) lub hom phiaj siab transmitter, yog hloov mus rau hluav taws xob los ntawm kev siv lub siab los ntsuas.
Ob daim kab xev ntsuas nrog cov cement tshwj xeeb raws li cov axial thiab radial nplaum ntawm lub raj strain, thaum strain raj vim compression, qhov kev tawm tsam yuav tshwm sim qhov hloov pauv, uas cuam tshuam rau qhov loj ntawm qhov tsis kam, thiab lub hauv paus ntsiab lus ntawm kev ntsuas. ntawm lub siab tiv thaiv hom sib txawv nyob rau hauv cov duab ntawm hom hom transducer tuaj yeem ua rau cov khoom hloov pauv.