1.Tirohanga Whānui mō te Hua:
Ko te hiahia matū mō te hāora (COD) e pā ana ki te kukū papatipu o te hāora e pau ana i ngā waikura i te wā e waikura ana ngā matū whakaiti waro me ngā matū kore-waro i roto i ngā tauira wai me ngā waikura kaha i raro i ētahi āhuatanga. He tohu nui anō hoki te COD e whakaatu ana i te nui o te parahanga o te wai e ngā matū whakaiti waro me ngā matū kore-waro.
Ka taea e te tātari te mahi aunoa me te mahi tonu mō te wā roa, me te kore e tirotirohia e ai ki ngā tautuhinga o te papaanga. He whānuitia te whakamahinga i roto i ngā wai parahanga tukunga parahanga ahumahi, ngā wai parahanga tukanga ahumahi, ngā wai parahanga ahumahi, ngā wai parahanga o ngā whare maimoatanga wai parahanga ā-tāone me ētahi atu wā. E ai ki te uauatanga o ngā āhuatanga whakamātautau o te papaanga, ka taea te whiriwhiri i te pūnaha maimoatanga o mua e tika ana kia pono ai te tukanga whakamātautau, kia tika ai ngā hua whakamātautau, ā, kia tutuki katoa ai ngā hiahia o ngā wā rerekē.
2.Te Kaupapa Hua:
Ngā tauira wai, te otinga nakunaku pāhare pākawa dichromate, te otinga hiriwa whanariki (ka taea te tāpiri i te hiriwa whanariki hei whakakorikori hei whakakōkī i ngā pūhui aliphatic rārangi kia pai ake te whai hua) me te ranunga waikawa whanariki kukū kua werahia ki te 175℃. Ka rerekē te tae o ngā pūhui waro i roto i te otinga whakakōkī ira dichromate. Ka kitea e te tātari te huringa tae ka huri i te huringa ki te uara COD kātahi ka puta te uara. Ko te nui o te ira dichromate e pau ana he rite ki te nui o te mea waro ka taea te whakakōkī, arā, ko te COD.
3.Ngā Tawhā Hangarau:
| Kāore. | Ingoa | Ngā Whakatakotoranga Hangarau |
| 1 | Awhe Taupānga | He pai mō ngā wai para me te COD i waenga i te 10~5,000mg/L me te kukū o te pūhaumāota i raro i te 2.5g/L Cl-. E ai ki te hiahia tuturu o ngā kiritaki, ka taea te whakawhānui ake ki ngā wai para me te kukū o te pūhaumāota i raro i te 20g/L Cl-. |
| 2 | Ngā Tikanga Whakamātautau | Te nakunaku pāhare pākawa dichromate i te pāmahana teitei, te whakatau tae |
| 3 | Awhe ine | 10~5,000mg/rita |
| 4 | Te rohe o raro o te Kitenga | 3 |
| 5 | Whakataunga | 0.1 |
| 6 | Te tika | ±10% ±8mg/L rānei (Tangohia te uara nui ake) |
| 7 | Te āheinga ki te whakahoki anō | 10%, 6mg/L rānei (Tangohia te uara nui ake) |
| 8 | Kore Te Rerenga | ±5mg/L |
| 9 | Te Āputaputa o te Whānuitanga | ±10% |
| 10 | Huringa ine | E 20 meneti te iti rawa. E ai ki te tauira wai tuturu, ka taea te whakarite i te wā nakunaku mai i te 5 ki te 120 meneti. |
| 11 | Wā tauira | Ka taea te whakarite i te wā (ka taea te whakarite), te haora whakauru, te aratau ine rānei. |
| 12 | Whakarerekētanga huringa | Whakatikatika aunoa (ka taea te whakarite i te 1-99 rā), ka taea te whakarite i te whakatikatika ā-ringa e ai ki ngā tauira wai tuturu. |
| 13 | Huringa tiaki | Neke atu i te kotahi marama te wā tiaki, tata ki te 30 meneti i ia wā. |
| 14 | Te mahi a te tangata me te mīhini | Whakaaturanga mata pa me te whakauru tohutohu. |
| 15 | Te tiakitanga tirotiro-ā-koe | Ka taea te tātaritanga whaiaro i te āhua mahi, kāore e ngaro ngā raraunga i te āhua rerekē, i te āhua ngoikore rānei o te hiko. Ka whakakorea aunoatia ngā toenga o ngā matū tauhohenga, ā, ka tīmata anō te mahi i muri i te tautuhi anō āhua rerekē, te āhua ngoikore rānei o te hiko. |
| 16 | Te rokiroki raraunga | Kāore i te iti iho i te hawhe tau te roa o te rokiroki raraunga |
| 17 | Atanga whakauru | Huri rahinga |
| 18 | Atanga putanga | E rua ngā putanga matihiko RS485, Kotahi te putanga anaro 4-20mA |
| 19 | Ngā Tikanga Mahi | Te mahi i roto i te whare; pāmahana 5-28℃; haumākū whanaunga ≤90% (kāore he hauhautanga, kāore he tomairangi) |
| 20 | Te Whakamahinga o te Pūnaha Hiko | AC230±10%V, 50~60Hz, 5A |
| 21 | Ngā Ahu | 355×400×600(mm) |
