He Aratohu Whānui mō te Kōwhiri i te Mita Rere Hikohiko Tika mō te Maimoatanga Wai

He nui te whakawhirinaki o ngā whare maimoatanga wai ki te ine tika i te rere hei whakarite i te pai o te tukanga, te tutuki i ngā ture, me te whakamahinga pai o ngā rauemi. I roto i ngā hangarau ine rere e wātea ana, ko ngā mita rere hikohiko (mita EM) te mea e tino pai ana mō ngā tono e pā ana ki te wai—nā te kaha ki te whakahaere i ngā wai kawe, te iti o te hekenga pēhanga, me te iti o ngā hiahia tiaki. Heoi, ko te whiriwhiri i te mita EM tika mō tētahi horopaki maimoatanga wai me whai whakaaro nui ki ngā whakatakotoranga hangarau, ngā tikanga whakahaere, me ngā whakaritenga tutuki. Ka whakamāramahia e tēnei aratohu ngā āhuatanga matua hei whakahaere i te tukanga whiriwhiri.

1. Kia Mārama ki ngā Whakaritenga Matua o ngā Tono Maimoatanga Wai

• Ngā Āhuatanga Wai: Kāore e taea te whiriwhiri i te kawe hiko mō ngā mita EM (me whakamahi ngā wai he kawe hiko ≥5 μS/cm, he mea ngāwari ki te whakatutuki i tēnei e te nuinga o ngā momo wai, tae atu ki te wai puna, te wai para, me te wai inenga matū). Heoi, kia mōhio mēnā kei roto i te wai ngā totoka iri (hei tauira, te paru i roto i te maimoatanga tuarua) ngā tāpiringa waikura rānei (hei tauira, te chlorine, te konumohe), nā te mea ka pā ēnei ki te kōwhiringa rauemi.
• Awhe rere: Whakatauhia te tere rere iti rawa me te tere rere mōrahi me ine e te mita. He ōwehenga hurihuri (rere mōrahi ki te rere iti rawa) o ngā mita EM, mai i te 10:1 ki te 100:1; whiriwhiria he ōwehenga e uru ana ki ngā piki me ngā heke (hei tauira, te rere nui i te wā ua mō te maimoatanga wai para).
• Ngā hiahiatanga tika: He maha ngā wā ka whakahaua e ngā paerewa ture (hei tauira, ngā aratohu a te EPA i roto i te US, i te EU Water Framework Directive rānei) he taumata tika motuhake—ko te tikanga he ±0.5% ki te ±1% o te tauine katoa mō te whakahaere tukanga, me ngā manawanui pakari ake (±0.2%) mō te pūrongo nama, te pūrongo tukunga rānei.

2. Whakatairangahia te Hototahi Rauemi kia Roa ai te Ora

• Arai ngongo ine: Mō te wai paipa paerewa, mō te wai para kore-waikura rānei, he iti te utu, he pakari hoki ngā arai rapa (hei tauira, EPDM, neoprene). Mō ngā wai kaha (hei tauira, te wai para waikawa, te wai rānei he nui te taumata chlorine), whiriwhiria ngā arai ātete matū pērā i te PTFE (Teflon) FKM (Viton) rānei. Mō ngā whakamahinga me ngā totoka whakakoi (hei tauira, te paru), whiriwhiria ngā arai whakapakari (hei tauira, te polyurethane) hei ārai i te pakaru.
• Ngā Irahiko: He pai te mahi a ngā irahiko kowiri tira (316L) mō te nuinga o ngā tono wai kore-waikura. Mō ngā wai waikura (hei tauira, te wai tote, te wai rānei he konganuku taumaha), whiriwhiria ngā irahiko Hastelloy C, titanium rānei. Mō ngā tono e ngāwari ana ki te poke (hei tauira, te wai mata kua ki tonu i te rimurimu), whakaarohia ngā irahiko me ngā āhuatanga horoi kua hangaia ki roto (hei tauira, te horoinga ultrasonic, te horoinga mīhini rānei) hei pupuri i te tika.

3. Kōwhiria te Momo me te Rahi Tāutanga Tika

• Tāutanga ā-roto: Ko te momo tino noa mō te maimoatanga wai, ko te wāhi e whakanohoia tika ai te mita ki roto i te paipa. Me whakarite kia ōrite te diameter o te paipa ki te rahi ingoa o te mita (hei tauira, mita 2-inihi mō te paipa 2-inihi) kia kore ai e hē te rere. Me whai hoki i ngā aratohu a te kaihanga mō ngā roa paipa tika o runga/o raro (ko te tikanga he 5× te diameter o te paipa ki runga, ā, he 3× te raro) kia iti ai te pōrearea mai i ngā tuke, i ngā takirere rānei.
• Tāutanga momo whakaurunga: He pai mō ngā paipa nui (≥8 inihi) ina kore e taea te whakamahi i ngā mita raina-roto. Ka tāutahia ngā mita whakaurunga mā roto i tētahi puna i roto i te pakitara paipa, ka whakaiti i ngā utu tāutanga me te wā kore mahi. Heoi, me tika te pokapū kia tika ai te ine, nō reira whiriwhiria ngā tauira me te hohonu whakaurunga ka taea te whakarerekē.

4. Arotakehia ngā Āhuatanga Putanga me te Whakawhitiwhiti Kōrero

• Putanga ā-rorohiko: He tohu paerewa te 4-20 mA mō te tuku tere rere tonu ki ngā kaiwhakahaere. Me whakarite kia wehea te putanga hei ārai i te pokanoa hiko mai i ētahi atu taputapu.
• Putanga mamati: Mō te takiuru raraunga, te aroturuki mamao rānei, whiriwhiria ngā mita me te whakawhitiwhiti RS485 (Modbus RTU) me te whakawhitiwhiti Ethernet (Profinet, Ethernet/IP). Mā ēnei kawa ka taea te hono atu i ngā mita maha ki tētahi pūnaha pokapū, ka māmā ake te whakahaere raraunga.
• Ngā āhuatanga tāpiri: Rapua ngā mita me ngā whakaaturanga ā-rohe (LCD, LED rānei) hei pānui i te wāhi, me ngā mahi whakaoho (hei tauira, ngā whakatūpato rere tiketike/iti, ngā whakatūpato paru hiko) hei whakahohe i te tiaki matatau.

5. Whakaarohia te Whakatutukitanga me te Tiwhikete

• Ngā Tiwhikete Tika: Me tutuki ngā mita i ngā paerewa o te ao pēnei i te ISO 4064 (mō ngā mita wai) me te IEC 60044-1 (mō ngā mita hiko) kia tika ai ā rātou pānui i raro i te ture.
• Ngā tiwhikete haumaru me te taiao: Mō ngā wāhi morearea (hei tauira, ngā whare tukatuka wai para me ngā hau pahū), whiriwhiria ngā mita me ngā tiwhikete ATEX, IECEx rānei. Mō ngā tono wai inu, kia tutuki ngā rauemi kua mākū i ngā paerewa NSF/ANSI 61 (US) WRAS rānei (UK) mō te haumaru wai inu.

6. Whakauruhia te Utu Katoa o te Mana Whakahaere (TCO)

• Ngā utu tāutanga: Tērā pea ka hiahiatia he tapahi paipa me te wā kore mahi mō ngā mita whakauru, engari he tere ake te tāutanga o ngā mita whakauru.
• Ngā hiahia whakatikatika: Ko te nuinga o ngā kaihanga e taunaki ana i te whakatikatika ā-tau, engari ko ētahi tauira e tuku ana i ngā āhuatanga whakatikatika-ake hei whakaiti i ngā utu.
• Te Roa o te Ora: Ka roa pea ngā mita EM kounga teitei me ngā rauemi hototahi mō te 10–15 tau, ā, he haumitanga mō te wā roa.

Whakamutunga