Isingeniso Semikhiqizo Ye-PID Entsha Yephampu ((Izinzwa ezizithuthukisile)
I-GQ-AEC2232bX-P
Iyini igesi ye-VOC?
I-VOC isifinyezo sezinto eziphilayo ezishintshashintshayo. Ngomqondo ojwayelekile, i-VOC ibhekisela kumyalo wezinhlanganisela eziphilayo eziguquguqukayo; Kodwa-ke, mayelana nokuvikelwa kwemvelo, kubhekiselwa ekilasini lezinto eziphilayo eziguquguqukayo ezisebenzayo neziyingozi. Izingxenye eziyinhloko ze-VOC zihlanganisa ama-hydrocarbon, ama-halogenated hydrocarbons, ama-oxygen hydrocarbon, nama-nitrogen hydrocarbons, okuhlanganisa izinhlanganisela zochungechunge lwe-benzene, ama-organic chloride, uchungechunge lwe-fluorine, ama-organic ketone, ama-amine, utshwala, ama-ether, ama-ester, ama-acids, nama-petroleum hydrocarbons. Futhi isigaba sezinhlanganisela ezibeka usongo olukhulu empilweni yomuntu.
Yiziphi izingozi zegesi ye-VOC?
Yiziphi izindlela zokuthola amagesi e-VOC?
Uyini umgomo womtshina we-PID?
Ukutholwa kwe-Photoionization (PID) kusebenzisa imisebe ye-ultraviolet ekhiqizwe i-ionization yegesi ye-inert ngendawo kagesi enemvamisa ephezulu ukuze i-ionize ama-molecule egesi ngaphansi kokuhlolwa. Ngokulinganisa amandla amanje akhiqizwa igesi ionized, ukugxila kwegesi ngaphansi kokuhlolwa kutholakala. Ngemva kokutholwa, ama-ion aphinde ahlangane abe igesi yasekuqaleni kanye nomhwamuko, okwenza i-PID ibe umtshina ongabhubhi.
Inzwa ye-PID ezakhiwe ngokwakho
Inkambu kagesi evusa amadlingozi
Impilo ende
Ukusebenzisa isinxephezelo esihlakaniphile ukujabulisa inkambu kagesi, okunweba kakhulu impilo yezinzwa (impilo>iminyaka emi-3)
Ubuchwepheshe bakamuva bokuvalwa
Ukuthembeka okuphezulu
Iwindi lokuvala lamukela impahla ye-magnesium fluoride ehlanganiswe nenqubo entsha yokuvala, igweme ngempumelelo ukuvuza kwegesi eyivelakancane nokuqinisekisa ubude besikhathi senzwa.
Indandatho yokuqoqa igesi yewindi
Ukuzwela okuphezulu nokunemba okuhle
Kunendandatho yokuqoqa igesi efasiteleni lelambu le-UV, okwenza i-ionization yegesi icace kakhudlwana futhi itholakale ukuthi ibe bucayi futhi inembe kakhudlwana.
Izinto zeTeflon
Ukumelana nokugqwala nokuzinza okuqinile
Izingxenye ezikhanyiswa amalambu e-ultraviolet zonke zenziwe ngezinto ze-Teflon, ezinekhono eliqinile lokulwa nokugqwala futhi ezinganciphisa i-oxidation nge-ultraviolet ne-ozone.
Isakhiwo esisha segumbi
Ukuzihlanza nokulungisa mahhala
Uhlobo olusha lwesakhiwo segumbi lokuklama okungeziwe kwesiteshi sokugeleza ngaphakathi kwenzwa, engavuthela ngokuqondile futhi ihlanze inzwa, inciphise ngempumelelo ukungcola kweshubhu yesibani futhi izuze inzwa yamahhala yokulungisa.
Umtshina wepompo odonsayo oklanyelwe ngqo inzwa entsha ye-PID uvumela inzwa ukuthi ifinyelele ukusebenza kahle okuphezulu, inikeze imiphumela yokutholwa engcono kanye nolwazi olungcono lomsebenzisi.
Izinga le-anti-corrosion lifinyelela ku-WF2 futhi lingakwazi ukuzivumelanisa nezimo ezihlukahlukene zomswakama ophezulu kanye nezimo eziphakeme zokufuthwa kukasawoti (Ukufafaza impahla elwa nokugqwala kwe-fluorocarbon ngopende we-fluorocarbon egobolondweni)
Inzuzo 1: Awekho ama-alamu angamanga endaweni yokushisa ephezulu kanye nomswakama
Ukuhlolwa kulingise ukuhlola okuqhathanisayo phakathi kwezitholi ze-PID zendabuko kanye nezitholi ze-PID zezinzwa ezimbili endaweni yomswakamo ophezulu ongu-55 ° C. Kungabonwa ukuthi izitholi ze-PID zendabuko zinokuguquguquka okukhulu kokugxilisa ingqondo kule ndawo futhi zithambekele kuma-alamu angamanga. Futhi umtshina we-PID wezinzwa ezimbili ezinelungelo lobunikazi i-Anxin awuguquki neze futhi uzinze kakhulu.
Inzuzo 2: Impilo ende nokugcinwa mahhala
Inzwa entsha ye-PID
ukuqapha okuhlangene
Ukuhlunga kwezigaba eziningi
Thola inzwa ye-PID enempilo engaphezu kweminyaka emi-3 nokugcinwa mahhala ngesikhathi sokuphila kwayo
Ukuphumelela okubalulekile okuqhathaniswa nempilo yezinzwa ze-catalytic
Inzuzo 3: Idizayini ye-Modular, ukufakwa okulula nokugcinwa
I-PID sensor module, ingavulwa ngokushesha futhi ihlakazwe ukuze ilungiswe
Iphampu ye-modular, ixhumeka ngokushesha futhi ifakwe esikhundleni
Imojula ngayinye izuze ukwakheka kwe-modular, futhi zonke izingxenye ezisengozini futhi ezisebenzisekayo zishintshiwe ngokushesha nangokufanele.
Ukuhlolwa kokuqhathanisa, ukuqhathanisa okuphezulu nokuphansi
Ukuqhathanisa nemikhiqizo yezinzwa ye-PID engenisiwe engalashwanga
Ukuhlola okuqhathanisa nohlobo oluthile lwezithonjana emakethe
Ipharamitha Yezobuchwepheshe
| Isimiso Sokuthola | Inzwa ye-PID ehlanganisiwe | Indlela yokudlulisa isignali | 4-20mA |
| Indlela yesampula | Uhlobo lokumunca iphampu (eyakhelwe ngaphakathi) | Ukunemba | ±5%LEL |
| I-voltage esebenzayo | I-DC24V±6V | Ukuphindaphinda | ±3% |
| Ukusetshenziswa | 5W (DC24V) | Ibanga lokudluliswa kwesignali | ≤1500M (2.5mm2) |
| Ibanga Lokucindezela | 86kPa～106kPa | Izinga lokushisa lokusebenza | -40 ~ 55℃ |
| Uphawu lobufakazi bokuqhuma | ExdⅡCT6 | Ibanga lomswakamo | ≤95%, akukho ukujiya |
| Izinto zegobolondo | Cast aluminium (i-fluorocarbon paint anti-corrosion) | Ibanga lokuvikela | IP66 |
| Isixhumi esibonakalayo sikagesi | I-NPT3/4＂Uchungechunge lwepayipi (ngaphakathi) | ||
Mayelana nemibuzo ngezitholi ze-PID?
Impendulo: Umkhiqizo owethulwe ngalesi sikhathi ngokuyinhloko uthatha indawo yenzwa ye-PID yakamuva ethuthukisiwe yenkampani yethu, eshintshe ukwakheka kwegumbi lomoya (umklamo wesiteshi sokugeleza) kanye nemodi yokuphakelwa kwamandla. Umklamo okhethekile wesiteshi sokugeleza unganciphisa ukungcoliswa kokukhanya futhi uzuze ukusula amashubhu esibani samahhala ngokuhlunga kwamazinga amaningi. Ngenxa yemodi yokuphakelwa kwamandla kwenzwa eyakhelwe ngaphakathi, ukusebenza kwezikhawu kuyashelela futhi kuhlakaniphe kakhulu, futhi ukutholwa okuhlangene nezinzwa ezimbaxambili kufeza isikhathi sempilo esingaphezu kweminyaka emi-3.
Impendulo: Imisebenzi esemqoka yebhokisi lemvula ukuvimbela amanzi emvula nesitimu sasembonini ukuthi singathinteki ngqo umtshina. 2. Vimbela umthelela wezindawo ezishisayo nezinomswakama kuma-PID detectors. 3. Vimba uthuli oluthile emoyeni futhi ubambezele ukuphila kwesihlungi. Ngokusekelwe kuzizathu ezingenhla, sihlomise ibhokisi elingangenwa yimvula njengokujwayelekile. Yebo, ukungeza ibhokisi elingenamvula ngeke kube nomthelela omkhulu esikhathini sokuphendula igesi.
Impendulo: Kumele kuqashelwe ukuthi isondlo seminyaka engu-3 samahhala sisho ukuthi inzwa ayidingi ukugcinwa, futhi isihlungi sisadinga ukugcinwa. Siphakamisa ukuthi isikhathi sokugcinwa kwesihlungi ngokuvamile siyizinyanga eziyisi-6-12 (sifinyezwe sibe yizinyanga ezi-3 ezindaweni zemvelo ezinokhahlo)
Impendulo: Ngaphandle kokusetshenziswa kwezinzwa ezimbili zokutholwa ngokuhlanganyela, inzwa yethu entsha ingafinyelela impilo yeminyaka engu-2, ngenxa yenzwa yethu esanda kuthuthukiswa ye-PID (ubuchwepheshe obunelungelo lobunikazi, isimiso esivamile singabonakala esigabeni sesibili). Imodi yokusebenza yokutholwa ngokuhlanganyela kwe-semiconductor+PID ingafinyelela impilo yeminyaka emi-3 ngaphandle kwezinkinga.
Impendulo: a. I-Isobutene inamandla aphansi e-ionization, ene-Io engu-9.24V. Ingenziwa ionini ngamalambu e-UV ku-9.8eV, 10.6eV, noma 11.7eV. b. I-Isobutene ubuthi obuphansi kanye negesi ezingeni lokushisa elilingana negumbi. Njengegesi yokulinganisa, ibeka ingozi encane empilweni yomuntu. c. Intengo ephansi, kulula ukuyithola
Impendulo: Ngeke yonakale, kodwa ukugxila okuphezulu kwegesi ye-VOC kungabangela igesi ye-VOC ukunamathela efasiteleni kanye ne-electrode isikhathi esifushane, okuholela ekungaphenduli kwenzwa noma ukunciphisa ukuzwela. Kuyadingeka ukuhlanza ngokushesha isibani se-UV kanye ne-electrode nge-methanol. Uma kukhona ubukhona besikhathi eside begesi ye-VOC eyedlula i-1000PPM esizeni, ukusebenzisa izinzwa ze-PID akubizi futhi izinzwa ze-infrared ezingahlakazisi kufanele zisetshenziswe.
Impendulo: Ukulungiswa okuvamile okungafinyelelwa yi-PID ngu-0.1ppm isobutene, futhi inzwa ye-PID engcono kakhulu ingafinyelela ku-10ppb isobutene.
Ukuqina kokukhanya kwe-ultraviolet. Uma ukukhanya kwe-ultraviolet kunamandla ngokuqhathaniswa, kuzoba nama-molecule egesi amaningi angenziwa i-ionized, futhi ukulungiswa kuyoba ngcono ngokwemvelo.
Indawo ekhanyayo yesibani se-ultraviolet kanye nendawo engaphezulu ye-electrode yokuqoqa. Indawo enkulu ekhanyayo kanye nendawo enkulu yeqoqo le-electrode ngokwemvelo kubangela ukulungiswa okuphezulu.
I-offset current ye-preamplifier. Uma kuncane i-offset current ye-preamplifier, iba ntekenteke i-current detectable. Uma i-bias current ye-amplifier yokusebenza inkulu, isignali yamanje ewusizo ebuthakathaka izocwiliswa ngokuphelele ku-offset current, futhi ukulungiswa okuhle ngeke kufinyelelwe ngokwemvelo.
Ukuhlanzeka kwebhodi lesifunda. Amasekhethi e-analog athengiswa emabhodini esekethe, futhi uma kukhona ukuvuza okuphawulekayo ebhodini lesifunda, amaza abuthakathaka awakwazi ukuhlukaniswa.
Ubukhulu bokumelana phakathi kwamanje ne-voltage. Inzwa ye-PID ingumthombo wamanje, futhi yamanje ingakhuliswa futhi ikalwe njenge-voltage ngokusebenzisa isixhasi. Uma ukumelana kukuncane kakhulu, izinguquko ezincane zamandla kagesi azikwazi ukufinyelelwa ngokwemvelo.
Ukulungiswa kwesiguquli se-analog-to-digital ADC. Ukuphakama kwesinqumo se-ADC, kuba yincane isignali kagesi engaxazululwa, futhi ngcono ukulungiswa kwe-PID.
