1. Chii chinonzi radar level meter? Ndezvipi zvinhu zvayo?
Chiyero cheradar level meter rudzi rwechishandiso chinoburitsa ma microwave kuburikidza ne antenna kusvika padanho repakati rakayerwa, uye chobva chaverenga huwandu hwemvura iri mukati memudziyo zvichienderana nenguva inotora kuti ma microwave abudiswe uye adzoke.
Zvimiro:
① Hapana chinotamiswa, hapana zvikamu zvekutumira, hapana chiyero chekusangana, hachidziviswi nekupisa, kumanikidzwa, utsi, maaerosols kana guruva. Yakakodzera kuyerwa kwenzvimbo ine viscous, ine chepfu kana isina chepfu, uye ine corrosive medium.
②Mita yeradar level haina nzvimbo yekuyera isina chinhu uye kururama kwayo (resolution) kunogona kunge kwakanyanya. Kukanganisa kwekuyera kwehuwandu hwemvura kunogona kusvika 1mm (nemhando dzakasarudzika dzinosvika 0.1mm). Saka, inogona kushandiswa sechishandiso chekuyera chekutengeserana.
2. Ndeipi pfungwa yekuyera mita yeradar level?
Chiyero cheradar chinoshandisa oscillator ine mafrequency akawanda semuchina wekugadzira microwave. Microwave inogadzirwa nejenareta inotungamirwa kuantenna yemwaranzi kuburikidza newaveguide yobva yaburitswa pasi. Kana microwave ikasangana nechipingamupinyi, senge pamusoro pemvura, imwe yacho inonyudzwa uye imwe inodzorwa kumashure. Mwero wemvura unoyerwa nekuyera hukama huripo pakati pezvimwe zvikamu zvewave inotumirwa uye wave inodzorwa kubva pachiyero chemvura.
Parizvino, kune mhando mbiri huru dzemamita eradar level. Rudzi rumwe rune frequency yakatarwa yekubuda kwemhepo uye runoyera nguva yekufamba kwewave inobuda uye wave inoratidzwa. Zvadaro, kuburikidza ne processor yesignal yakangwara, inoverenga kukwirira kwelevel yemvura yakayerwa. Hukama huripo pakati penguva yekushanda kwerudzi urwu rweradar level gauge uye daro kubva palevel yemvura ndeinotevera: t = 2d/c.
c - Kumhanya kwekupararira kwemafungu emagetsi, c = 300000 km/s;
d - Kureba kuri pakati pedanho repakati rakayerwa neprobe, mumamita;
t - Nguva kubva apo probe inoburitsa mafungu emagetsi kusvika yagamuchira mafungu emagetsi anoratidzwa, S.
Imwe mhando inoyera musiyano wefrequency pakati pewave inoburitswa newave inoratidzwa, uye inoshandura musiyano uyu wefrequency kuita chiratidzo chemagetsi chinoenderana nechiyero chemvura chakayerwa. Kuwanda kwekubuda kwemhando iyi ye liquid level gauge hakusi frequency yakatarwa asi frequency inogadziriswa nguva dzose.
Nguva yekutumira: Zvita-03-2025