An yi amfani da wannan nau'in firikwensin sosai shekaru da yawa. Idan aka kwatanta da block na plaster, ba shi da narkewa a cikin ruwan ƙasa, ba shi da tasirin zafin jiki, don haka ana iya amfani da shi a cikin ƙasa shekaru da yawa. Yawancin lokaci, uku a matsayin rukuni, shigar a cikin zurfin guda don sa ido kan yanayin ruwa a cikin wani layer, ko sa ido kan ruwa a cikin zurfin ƙasa daban-daban. Na'urar firikwensin ta ƙunshi biyu concentric electrodes binne a cikin wani musamman matrix kayan da aka ɗauke da wani bakin karfe retina isa. An zaɓi substrate kayan don nuna mafi girma canje-canje a juriya na samar da amfanin gona a cikin girma range. Ruwan ƙasa yana ci gaba da sha ko saki ta hanyar firikwensin, juriya tsakanin electrodes yana canzawa, juriya da aka auna tana canzawa zuwa matsin lamba don karanta karatun sha ruwan ƙasa.

Bayanan oda

200.733.512 A512 Watermark Interface

801.000.001 single Watermark Sensor, 5m cable