Dareemiyaha Cadaadiska / Gudbiyaha / Gudbiyaha

Qaar badan ayaa laga yaabaa inay ku jahawareeraan kala duwanaanshaha u dhexeeya, dareeraha cadaadiska, beddelaha cadaadiska iyo gudbiyaha cadaadiska heerar kala duwan. Saddexdaas erey waa la isweydaarsan karaa marka la eego macnaha guud. Dareemayaasha cadaadiska iyo transducers waxaa lagu kala saari karaa calaamadda wax soo saarka. Midka hore waxaa lagu sifayn karaa calaamad wax soo saar 4-20mA ah halka kan dambe uu wato signal millivolt ah. Si kale haddii loo dhigo, ereyga ku habboon waxaa lagu go'aamin karaa iyadoo loo eegayo calaamadda wax soo saarka iyo codsiga.

Dareemka Cadaadiska

Dareemka cadaadiska waa erey guud oo loogu talagalay dhammaan noocyada cadaadiska, aaladda loo isticmaalo in lagu cabbiro cadaadiska. Sida caadiga ah, signalka wax soo saarka millivolt wuxuu hayaa calaamad xoog leh oo aan khasaare lahayn marka qalabkan oo kale lagu rakibo 10-20 cagood oo ka fog qalabka elektiroonigga ah. Sahayda 5VDC oo leh calaamad wax soo saar 10mV/V waxay soo saartaa calaamad wax soo saar 0-50mV. Tignoolajiyada hore waxay soo saartaa kaliya 2-3mV/V (millivolts per volt) halka casriga casriga ahi uu awoodo inuu soo saaro 20mV/V si la isku halleyn karo. Calaamadaha wax soo saarka Millivolt waxay u bannaan yihiin injineerada si ay u habeeyaan calaamada soosaarka iyadoo loo eegayo baahiyo nidaam oo gaar ah oo loo dhimo cabbirka xirmada iyo sidoo kale qiimaha.

Transducer cadaadis

Soo saarista cadaadiska cadaadiska waa koronto heer sare ah ama calaamadda soo noqnoqda oo ay ku jiraan 0.5 4.5 V ratiometric, 1 - 5 V iyo 1 - 6 kHz. Soo saarista singalku waxay u dhigantaa sahayda guud ahaan. Calaamadaha soosaarka korantada waxay awoodaan inay bixiyaan isticmaalka hadda hooseeya ee qalabka ku shaqeeya baytari fog. Qulqullada sahayda ee u dhexeeya 8-28 VDC waxay u baahan tahay sahay nidaamsan oo 5VDC ah, marka laga reebo soosaarka 0.5 - 4.5V. Dhibaato dhib badan oo ah calaamadaha soo saarista danab ee duugga ah kuma jiraan "eber nool", waxaa jira calaamad marka shidmahu uu ku jiro cadaadis eber ah. Nidaamkii hore wuxuu inta badan ku guuldareystaa inuu ogaado farqiga u dhexeeya dareeme fashilmay oo aan lahayn wax soo saar iyo cadaadis eber ah.

Gudbiyaha Cadaadiska

Gudbiyaha cadaadisku wuxuu ku shaqeeyaa cabbiraadda hadda ee qalabka halkii danab. Dabeecadda ugu cad cad waa calaamadda wax soo saarka hadda 4-20mA. Lonnmetergudbiyaasha cadaadiskawaxaa loogu talagalay in lagu kormeero cadaadiska maraakiibta, dhuumaha ama taangiyada waqtiga dhabta ah. 4-20mA gudbiyaasha cadaadiska waxay bixiyaan difaac sanqadh koronto oo wanaagsan (EMI/RFI), waxayna u baahan doonaan sahay koronto ah 8-28VDC. Sababtoo ah calaamaduhu waxay soo saarayaan hadda, waxay cuni kartaa nolosha batteriga haddii ay ku shaqeyso cadaadis buuxa.

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