Phosphine (PH₃) yog ib qho inorganic compound uas yog xim tsis muaj xim, muaj kuab heev, flammable liquefied compressed gas nyob rau hauv chav tsev kub nrog active tshuaj zog. Nws tsis muaj ntxhiab tsw hauv nws lub xeev ntshiab, tab sis tuaj yeem nrog cov ntxhiab tsw ntawm acetylene, qej los yog cov ntses rotten hauv kev npaj ua lag luam lossis cov tshuaj tiv thaiv hlau phosphide. Tom qab nqus pa, nws nkag mus rau tib neeg lub cev sai sai los ntawm kev ua pa, ua rau lub cev puas tsuaj xws li lub plawv, lub ntsws, lub raum, lub paj hlwb thiab lub siab.
一 .Ua hauj lwm hauv paus ntsiab lus ntawm phosphine ntes
Electrochemical sensors ua hauj lwm los ntawm reacting nrog phosphine gas. Thaum phosphine reacts nrog lub rhiab ntsiab ntawm lub sensor, ib tug me me tam sim no hloov yog generated. Los ntawm kev tsim cov khoom siv hluav taws xob sab hauv, qhov kev hloov pauv tam sim no tuaj yeem hloov mus rau hauv lub teeb liab voltage, uas tuaj yeem ntsuas tau yooj yim thiab pom.
2.Yuav ua li cas xaiv lub phosphine ntes?
Confined space detection:Phosphine Gas Detector Pump Suction yog qhov zoo dua, nrog rau ntau yam ntawm 0-2000ppm, uas ua tau raws li qhov xav tau ntawm cov cheeb tsam nyuaj xws li granaries thiab kev cob qhia tshuaj.
Kev tshuaj xyuas niaj hnub: Ib tus neeg ntes (ntau 0-20ppm, daws teeb meem 0.1ppm) yog tsim rau kev tshuaj xyuas sai hauv thaj chaw qhib, lub sijhawm teb tsawg dua lossis sib npaug li 30 vib nas this, tsis siv neeg lub suab thiab lub tswb nrov thaum tshaj tus qauv.
3. Tsau online system
Lub kaw lus ruaj khov hauv online muaj xws li lub ntsuas hluav taws xob ruaj khov thiab tswj vaj huam sib luag. Lub tshuab ntes siv lub tshuab hluav taws xob hluav taws xob, txhawb nqa RS485/4-20mA tso zis, ntau yam: 0-1000ppm, daws teeb meem: 1ppm. Haum rau kev haus luam yeeb fumigation, tshuaj nroj tsuag thiab lwm yam scenarios. Kev tawg- hom pov thawj, tiv thaiv qib IP65 thiab siab dua, kom ntseeg tau ntev{12}} lub sijhawm ua haujlwm ruaj khov. High-frequency detectors, electrochemical detectors muaj cov nqi qis thiab tsim nyog rau kev siv mus ntev.
Kev saib xyuas kev ua haujlwm Fumigation: 0-2000ppm loj-ntau qhov ntsuas kuj tuaj yeem xaiv.
4. Kev siv cov khoom siv phosphine kom raug
1. Kev npaj ua ntej siv
① Paub meej tias lub tshuab ntes muaj lub hwj chim txaus (nws raug nquahu kom pib nrog lub zog tag nrho), thiab saib seb tus kheej - qhov kev ntsuam xyuas ntawm cov tshuaj ntsuam tau ua tiav ib txwm tom qab pib.
② Tshawb xyuas lub neej ntawm lub sensor.
Environmental prejudgement:
①Rau qhov chaw kaw, lub twj tso kua mis - lub tshuab nqus dej (nrog lub tshuab ntsuas hluav taws xob) yuav tsum tau siv kom tsis txhob raug cov neeg ua haujlwm ncaj qha.
② Paub meej tias qhov kub thiab txias nyob hauv thaj tsam ntawm -20℃~ 50 degree.
2. Kev kuaj xyuas cov txheej txheem ua haujlwm
①Power on and calibration: Peb lub tshuab kuaj tau raug ntsuas ua ntej tawm hauv lub hoobkas, thiab cov neeg siv khoom tuaj yeem siv ncaj qha tom qab tau txais cov khoom. Tom qab ntawd, calibrate ib zaug txhua 6 lub hlis los yog ib xyoos los xyuas kom meej qhov tseeb ntawm qhov kev ntsuam xyuas thiab ncua lub neej kev pab cuam ntawm lub sensor.
②Gas sampling : Qhib cheeb tsam: Handheld detector rau natural diffusion sampling, lub sojntsuam yog ntsib qhov chaw kuaj pom, 30-50 cm5 los ntawm hauv av.
Qhov chaw tsis muaj chaw nyob: Siv lub twj tso kua mis- hom ntes los sau cov qauv, txuas txuas txuas txuas txuas txuas ntxiv, thiab pib lub ntsuas ntsuas kom nqus tau cov pa hauv thaj chaw deb; thov nyob twj ywm li ob peb feeb thaum kuaj xyuas kom ntseeg tau tias cov roj tuaj yeem tiv tauj lub sensor.
③ Kev nyeem ntawv thiab sau cia: Saib xyuas qhov tseeb -lub sij hawm concentration tus nqi kuaj pom thiab sau cov ntaub ntawv ncov tom qab stabilization. Tshem tawm tam sim ntawd thaum tshaj tus qauv, thiab rov kuaj dua thiab paub meej tias tom qab qhov concentration poob mus rau qhov muaj txiaj ntsig zoo.
3. Tom qab-kev xeem ua: Kev tu thiab tu cov cuab yeej.
4. Ceev faj
① Kev tiv thaiv kev nyab xeeb: Kev tiv thaiv yuav tsum tau ua thaum kuaj pom.
② Zam kom tsis txhob them sijhawm ntev - lub sijhawm them nyiaj: Thaum them nyiaj, thov tua lub ntsuas kom txo lub sijhawm them, thiab tom qab ntawd tig nws kom them. Feem ntau, lub sijhawm them nqi yog li 3 mus rau 6 teev. Txhawm rau tiv thaiv lub neej zoo ntawm lub roj teeb, sim tsis txhob them cov khoom siv ntau tshaj 6 teev.
③Kev zam ntawm kev cuam tshuam: Tsis txhob siv nyob rau hauv siab -concentration hydrogen sulfide (H2S) lossis sulfur dioxide (SO2) ib puag ncig. Qee qhov sensors yuav hla -sensitive.
Los ntawm kev tsim cov txheej txheem kev khiav hauj lwm thiab ua raws li cov qauv kev nyab xeeb, cov phosphine detector tuaj yeem ua kom muaj kev nyab xeeb thiab txhim khu kev qha.