Yog tias koj tab tom txhim kho qhov sib nqus flowmeter, koj yuav hnov cov engineers hais txog ib yam: Grounding. Nws tsis yog kev ceev faj txog kev nyab xeeb xwb; Nws yog cov kauj ruam tseem ceeb tshaj plaws rau kev ua kom koj lub meter muab kev nyeem ntawv ruaj khov thiab raug.
Vim Li Cas MagNtws' meter ' Xav Tau Grounding?
Sib nqus flowmetersua hauj lwm los ntawm kev kuaj xyuas cov teeb liab me me hluav taws xob uas tsim los ntawm cov kua uas ntws los ntawm qhov chaw sib nqus. Vim tias cov teeb liab no tsis muaj zog, lawv yooj yim "dhuav tawm" los ntawm hluav taws xob suab nrov los ntawm ib puag ncig ib puag ncig.
Yog tsis muaj grounding zoo:
- Stray Currents: Hluav taws xob cuam tshuam los ntawm cov twj nyob ze, lub cev muaj zog, lossis cov kab hluav taws xob tuaj yeem xau rau hauv cov yeeb nkab.
- Lub teeb liab tsis ruaj khov: Koj qhov kev nyeem ntws tuaj yeem dhia ib puag ncig lossis qhia qhov yuam kev tas li.
- Zero-Point Drift: Lub 'meter' yuav nyuaj nrhiav qhov ruaj khov "zero" thaum tsis muaj ntws.
Los ntawm grounding lub 'meter', koj xyuas kom meej tias cov kua thiab lub sensor nyob ntawm tib lub peev xwm hluav taws xob. Qhov no tsim ib qho "shield" uas tso cai rau lub sensor tuaj tos tsuas yog cov teeb liab ntws thiab tsis quav ntsej cov suab nrov ib puag ncig.
Yuav Ua Li Cas Av Koj Flowmeter kom raug
Txoj kev koj siv yog nyob ntawm seb koj cov kav dej ua los ntawm dab tsi.
Installation ntawm cov kav hlau
Yog tias koj cov yeeb nkab yog tsim los ntawm cov qauv hlau (tsis muaj ib lub hauv ob sab hauv), kev siv hauv av yog ncaj nraim. Cov yeeb nkab nws tus kheej ua raws li tus neeg xyuas pib. Koj tsuas yog txuas lub flowmeter lub hauv av davhlau ya nyob twg rau cov yeeb nkab flanges, thiab tom qab ntawd txuas qhov system mus rau lub ntiaj teb txhim khu kev qha.
Kev teeb tsa ntawm cov kav dej yas los yog kab
Txij li cov yas (PVC, PE) lossis cov kav dej (PTFE, Roj Hmab) tsis ua hluav taws xob, lawv tsis tuaj yeem muab cov ntaub ntawv hauv av. Hauv cov xwm txheej no, koj muaj peb txoj hauv kev tseem ceeb:
Grounding Rings: Cov no yog nyias hlau disks ntsia nruab nrab ntawm lub flowmeter thiab cov yeeb nkab flanges. Lawv nyob rau hauv kev sib cuag ncaj qha nrog cov kua, muab ib tug ruaj khov siv taw tes rau lub teeb liab. Peb feem ntau muab peb hom kev sib tw hauv av: hom ib txwm, hom caj dab thiab hom kev tiv thaiv. Peb siv cov nplhaib hauv av feem ntau, hom kev tiv thaiv yog tsau rau ntawm flange los tiv thaiv flange nto hauv ob sab phlu los ntawm kev puas tsuaj; rau nruab nrab abrasive heev, tiv thaiv grounding rings yog siv.
Grounding Electrode: Qee qhov niaj hnub sensors tuaj nrog ib qho ua - nyob rau hauv thib peb electrode tshwj xeeb rau hauv av. Qhov no yog tus nqi -kev xaiv zoo, tshwj xeeb tshaj yog rau cov kav loj - txoj kab uas hla uas loj hlau grounding rings yuav kim heev.
Virtual Grounding: Qee qhov kev hloov pauv siab heev siv "virtual grounding" thev naus laus zis. Qhov no siv cov cuab yeej ntse sab hauv los cais cov teeb liab, tso cai rau lub ntsuas hluav taws xob ua haujlwm kom raug yam tsis xav tau cov nplhaib ntxiv lossis electrodes. Qhov no yog ib txoj hauv kev zoo kom txuag tau tus nqi installation.
3 Txoj Cai Golden rau kev teeb tsa zoo meej
Txhawm rau kom tau txais txiaj ntsig zoo tshaj plaws ntawm koj cov cuab yeej, khaws cov lus qhia hauv qab no:
Ua Kev ywj pheej: Ib txwm nyob hauv koj lub flowmeter rau nws tus kheej taw tes. Tsis txhob "daisy-chaw" nws nrog lwm cov tshuab hnyav xws li lub cev muaj zog lossis vuam. Yog hais tias cov cav tov xau hluav taws xob, nws yuav ncaj nraim rau hauv koj lub flowmeter.
Qhov Chaw Teebmeem: Khaws koj qhov chaw hauv av kom deb ntawm cov hluav taws xob loj loj lossis cov khoom siv hluav taws xob siab li -voltage li sai tau.
Tiv thaiv lub hauv ob sab phlu: Thaum txhim kho koj lub ntsuas, ceev faj kom tsis txhob ua rau cov sensors sab hauv lossis hauv ob sab phlu. Siv cov roj hmab gaskets nruab nrab ntawm flanges los xyuas kom meej lub foob kaw ntom nti thiab tiv thaiv kom tsis txhob xau.
Grounding yog lub hauv paus ntawm kev ntsuas qhov ntsuas qhov ntsuas tau zoo txawm tias koj siv cov nplhaib, electrodes, lossis virtual grounding.
Tiv tauj peb kom paub meej ntxiv.