1. Kev kuaj xyuas cov pa phem
Electrochemical sensors rau kev tshawb nrhiav cov pa roj carbon monoxide. Electrochemical cov qauv muaj xws li qhov muaj peev xwm electrolytic thiab galvanic cell oxygen sensors. Ntawm no tsuas yog hais txog qhov muaj peev xwm electrolytic tsis tu ncua.
Lub hauv paus ntsiab lus ntawm qhov muaj peev xwm electrolytic sensor:
Cov hluav taws xob tau nruab rau hauv lub cev ntawm lub cev cylindrical yas, cov electrolyte tau ntim ntawm cov electrodes, thiab cov diaphragm ua los ntawm cov ntxeem tau tetrafluoroethylene yog kaw rau saum. Lub peev xwm yog siv ntawm cov electrodes thiab txuas nrog lub preamplifier. Ib qho oxidation-txo cov tshuaj tiv thaiv tshwm sim ntawm cov roj thiab cov khoom siv hluav taws xob ua haujlwm hauv electrolyte, thiab qhov sib npaug ntawm cov hluav taws xob hloov pauv, thiab tus nqi ntawm qhov kev hloov pauv yog proportional rau cov roj concentration.
2. Kev kuaj xyuas cov roj combustible
Catalytic combustion sensor lossis infrared sensor. Ob lub sensors no feem ntau yog siv los txheeb xyuas cov pa roj carbon monoxide.
Lub hauv paus ntsiab lus ntawm catalytic combustion sensor:
Cov roj diffuses rau hauv catalytic combustion chamber ntawm lub sensor. Catalysts ntawm ob lub ntsiab lus sensor nyob rau hauv lub combustion chamber ua rau cov roj combustible hlawv tsis muaj nplaim taws, ua kom sov. Qhov kub hloov pauv tus nqi ntawm qhov ntsuas qhov ntsuas qhov ntsuas, rhuav tshem qhov sib npaug ntawm tus choj, thiab tsim cov teeb liab sib txawv me me, uas yog proportional to the concentration of combustible gas, thiaj li ua tiav lub hom phiaj ntawm kev kuaj xyuas cov concentration ntawm combustible gas.
Infrared sensor txoj cai:
Lub infrared sensor tsim lub teeb infrared los ntawm lub tshuab hluav taws xob infrared, dhau los ntawm cov roj chamber uas muaj cov qauv roj, thiab tom qab ntawd tau txais los ntawm cov txais tshwj xeeb rau ntau yam roj. Nws yog raws li lub hauv paus ntsiab lus ntawm kev nqus ntawm ib lub wavelength tshwj xeeb los ntawm cov khoom sib txawv.
3. Kev kuaj xyuas cov pa oxygen
Diffusion combustion unit (fuel cell). Nws yog feem ntau hu ua galvanic roj teeb oxygen sensor. Rau kev kuaj pom cov pa oxygen.
Galvanic roj teeb oxygen sensor txoj cai:
Ib sab ntawm lub thawv yas yog nruab nrog polytetrafluoroethylene gas-permeable membrane nrog zoo oxygen permeability, thiab cov electrode tsis zoo ntawm cov hlau muaj nuj nqis (platinum, kub, nyiaj, thiab lwm yam) nruj nreem rau hauv lub thawv, thiab cov anode yog. tsim nyob rau sab nraud ntawm lub thawv lossis qhov khoob ntawm lub thawv. (Siv lead, cadmium, thiab lwm yam hlau nrog siab ionization nyiam). Thaum cov pa oxygen dhau los ntawm electrolyte, cov cathode thiab anode raug oxidation-txo cov tshuaj tiv thaiv, ionize lub anode hlau, tso electrons, thiab tsim tam sim no.
Xi'an Huafan yog tus kws tshaj lijCH4 Gas Detectortswb controller chaw tsim tshuaj paus, lub hauv paus chaw tsim tshuaj paus, nrog zoo siab thiab lub koob npe nrov. Cov cuab yeej siv tau yooj yim rau kev khiav lag luam, kev ua haujlwm zoo dua, thiab cov khoom siv tau zoo. Peb tos ntsoov rau koj tuaj sab laj cov ncauj lus kom ntxaws ntawm cov khoom.