Sensor ea Khatello/Transmitter/Transducer

Ba bangata ba ka ’na ba ferekanngoa ke liphapang pakeng tsa, sensor ea khatello, transducer ea khatello le transmitter ea khatello ka tekanyo e fapaneng. Mantsoe ao a mararo a ka fapanyetsanoa tlas’a moelelo o itseng. Li-sensor tsa khatello le li-transducer li ka khetholloa ka lets’oao la tlhahiso. Ea pele e ka hlalosoa ka lets’oao la tlhahiso la 4-20mA ha ea morao e ka hlalosoa ka lets’oao la millivolt. Ka mantsoe a mang, lentsoe le nepahetseng le ka fumanoa ho latela lets’oao la tlhahiso le ts’ebeliso.

Sensor ea Khatello

Sensor ea khatello ke lentsoe le akaretsang bakeng sa mefuta eohle ea khatello, sesebelisoa se sebelisetsoang ho lekanya khatello. Ka tloaelo, lets'oao la tlhahiso ea millivolt le boloka lets'oao le matla ntle le tahlehelo ha sesebelisoa se joalo se kentsoe limithara tse 10-20 hole le lisebelisoa tsa elektroniki. Phepelo ea 5VDC e nang le lets'oao la tlhahiso ea 10mV/V e hlahisa lets'oao la tlhahiso ea 0-50mV. Theknoloji ea khale e hlahisa 2-3mV/V feela (millivolts ka volt) ha ea morao-rao e khona ho hlahisa 20mV/V ka mokhoa o tšepahalang. Matšoao a tlhahiso ea millivolt a boloka libaka bakeng sa baenjiniere ho laola lets'oao la tlhahiso ho latela litlhoko tse itseng tsa sistimi le ho fokotsa boholo ba sephutheloana hammoho le litšenyehelo.

Transducer ea Khatello

Phello ea transducer ea khatello ke lets'oao la motlakase kapa maqhubu a phahameng ho kenyeletsoa le karolelano ea 0.5 4.5 V, 1 - 5 V le 1 - 6 kHz. Phallo ea singal e lekana le phepelo ka kakaretso. Matšoao a phallo ea motlakase a khona ho fana ka ts'ebeliso e tlase ea hona joale bakeng sa lisebelisoa tse sebelisoang ke batter e hole. Li-voltage tsa phepelo tse tlohang ho 8-28 VDC li hloka phepelo e laoloang ke 5VDC, ntle le tlhahiso ea 0.5 - 4.5V. Bothata bo boima ba matšoao a phallo ea motlakase oa khale bo ho "zero e phelang", ho na le lets'oao ha sensor e le khatellong ea zero. Sistimi ea khale hangata e hloleha ho fumana phapang lipakeng tsa sensor e hlolehileng e se nang tlhahiso le khatello ea zero.

Mofetoleli oa Khatello

Sesebediswa sa ho fetisa kgatello se sebetsa ka ho lekanya ha jwale ha sesebediswa ho ena le motlakase. Sebopeho se totobetseng ka ho fetisisa ke letshwao la tlhahiso ya jwale la 4-20mA.li-transmitter tsa khatelloli etselitsoe ho lekola khatello ea likepe, liphaephe kapa litanka ka nako ea sebele. Li-transmitter tsa khatello ea 4-20mA li fana ka tšireletso e ntle ea lerata la motlakase (EMI/RFI), 'me li tla hloka phepelo ea motlakase ea 8-28VDC. Hobane lets'oao le hlahisa motlakase, le ka ja bophelo bo bongata ba betri haeba le sebetsa ka khatello e felletseng.

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