Sensor / Mai watsawa / Mai watsawa

Mutane da yawa na iya ruɗe game da bambance-bambance a tsakanin, firikwensin matsa lamba, mai ɗaukar matsa lamba da mai watsa matsa lamba a digiri daban-daban. Waɗannan sharuɗɗan guda uku ana iya musanya su a ƙarƙashin takamaiman mahallin. Ana iya bambanta na'urori masu auna matsi da masu fassara ta hanyar siginar fitarwa. Za a iya kwatanta tsohon tare da siginar fitarwa na 4-20mA yayin da na baya tare da siginar millivolt. A wasu kalmomi, ana iya ƙayyade lokacin da ya dace bisa ga siginar fitarwa da aikace-aikace.

Sensor Matsi

Na'urar firikwensin matsin lamba kalma ce ta gaba ɗaya don kowane nau'in matsa lamba, na'urar da ake amfani da ita don auna matsi. A al'ada, siginar fitarwa na millivolt yana riƙe da sigina mai ƙarfi ba tare da asara ba lokacin da aka shigar da irin wannan na'urar da nisan ƙafa 10-20 daga na'urorin lantarki. Samar da 5VDC tare da siginar fitarwa na 10mV/V yana samar da siginar fitarwa na 0-50mV. Tsofaffin fasaha na samar da 2-3mV/V (millivolts a kowace volt) yayin da fasahar zamani ke iya samar da 20mV/V a dogara. Sigina na fitarwa na Millivolt yana ba da sarari ga injiniyoyi don daidaita siginar fitarwa bisa ga takamaiman buƙatun tsarin da rage girman fakitin da farashi.

Mai Rarraba Matsi

Fitowar transducer matsa lamba shine babban matakin ƙarfin lantarki ko siginar mitar ciki har da 0.5 4.5 V ratiometric, 1 - 5 V da 1 - 6 kHz. Output singal yayi daidai da wadata a gaba ɗaya. Sigina na fitarwa na lantarki suna iya ba da ƙarancin amfani na yanzu don kayan aikin batir mai nisa. Ƙarfin wutar lantarki daga 8-28 VDC yana buƙatar samar da kayyade 5VDC, ban da fitowar 0.5 - 4.5V. Matsala mai wayo ta tsofaffin siginar fitarwar wutar lantarki ta ta'allaka ne a cikin babu "sifili mai rai", akwai sigina lokacin da firikwensin ke cikin matsin lamba. Tsoffin tsarin sau da yawa ya kasa gano bambanci tsakanin na'urar firikwensin da ya gaza ba tare da fitarwa da matsin lamba ba.

Mai watsa matsi

Mai watsa matsi yana aiki ta hanyar auna na'urar a halin yanzu maimakon ƙarfin lantarki. Mafi bayyanannen hali shine siginar fitarwa na yanzu 4-20mA. Lonnmetermasu watsa matsian tsara su don saka idanu kan matsa lamba na tasoshin, bututun ko tankuna a ainihin lokacin. 4-20mA masu watsa matsa lamba suna ba da kariya mai kyau na amo na lantarki (EMI/RFI), kuma za su buƙaci wutar lantarki na 8-28VDC. Saboda siginar yana samar da halin yanzu, zai iya cinye ƙarin rayuwar baturi idan yana aiki da cikakken matsi.

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