Pheej Yig DIY Electronic PH Meter: 3 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:28

lub ntsuas hluav taws xob pH ntsuas hluav taws xob tau tsim los ntawm 3 lub hauv paus tseem ceeb; pH sojntsuam, voltmeter thiab Circuit.

Kauj Ruam 1: PH Kev Tshawb Fawb

Kev sojntsuam pH ntsuas pH raws li kev ua haujlwm ntawm hydrogen cations ib puag ncig cov iav-phab ntsa iav ntawm nws qhov taub. peb yuav ua qhov no hauv ob ntu. iav cov ntaub ntawv sojntsuam pH: 1.a me me, cov iav me me. (xws li lub teeb pom kev zoo nkauj Christmas, qhov me dua qhov zoo dua) 2. qee cov kua nplaum epoxy 3. qee cov xaim nyiaj 4. qee cov tshuaj dawb 5.some yas tubing (yas straw ua haujlwm) zoo) 6. Potassium chloride (tuaj yeem pom tau tias muaj ntsev ntsev tsawg thiab hauv cov tshuaj vitamin) 7. Dej 8.some kua txiv yuav ua li cas: 1. yog tias siv lub caij Christmas kho kom zoo nkauj koj yuav tsum ua kom ntseeg tau tias tag nrho cov xim pleev xim. thiab nws yog qhov huv huv los ntawm kev rhaub nws hauv cov tshuaj dawb rau ob peb teev. Cia nws txias, thiab ua tib zoo tshem nws tawm thiab txhuam cov xim. Yog tias nws tseem nyuaj rau tshem tawm, dunk nws rov qab rau hauv cov tshuaj dawb thiab rhaub nws ntxiv. Thaum kawg nws yuav tag nrho tawm. Tom qab ntawd nws yuav tsum tau kho. ua qhov no los ntawm kev so nws hauv cov kua txiv hmab txiv ntoo dilute rau ob peb teev, tom qab ntawd dipping hauv cov tshuaj dawb tov rau lwm ob peb teev, thiab tom qab ntawd yaug nws hauv dej. Thaum tsis siv, lub iav tsom iav yuav tsum tau ntub dej txhua lub sijhawm. Tsuas yog tso nws rau hauv lub thoob dej. 2. tom qab ntawd txhawm rau ua qhov kev soj ntsuam tas li siv ib daim yas yas, tub raj iav lossis quav yas (yuav tsum nyob ib ncig ntawm qhov qhib ntawm lub qhov muag iav). Txiav lub tub rau qhov ntev uas xav tau thiab lo nws mus rau qhov qhib qhov kawg ntawm lub iav qhov muag. 3. Ua kom cov hlau chloride nyiaj, yooj yim dunk qee cov hlau xaim rau hauv cov tshuaj dawb rau ob peb teev (txawm tias zoo dua hmo ntuj). Koj yuav pom cov nyiaj xaim tig xim av. Qhov no yog txheej txheej ntawm cov nyiaj chloride (AgCl) uas tsim tawm ntawm cov hlau. 4. Ntxig cov xaim nyiaj chloride xaim mus rau hauv qhov kev sojntsuam, thiab sau nws nrog cov poov tshuaj chloride tov daws (KCl). Txhawm rau ua kom cov kua txaus, ua kom cov tshuaj potassium chloride yaj hauv dej kom txog thaum tsis muaj kev daws teeb meem ntxiv thiab koj muaj qee cov KCl muaju dai rau ib puag ncig. 5. Tom qab ntawd siv cov roj hmab nres lub hau ntawm lub raj kom cov kua tau khaws cia hauv cov ntaub ntawv siv cov khoom siv hluav taws xob: 1. Ib daim yas yas los yog straw 2. Ib co hlau xaim 3. Potassium chloride 4. Dej 5. Agar Agar (gelatinous substance, tau txais los ntawm algae tuaj yeem pom hauv khw muag khoom) yuav ua li cas thiaj ua tau: 1. qhov kev sojntsuam siv kuj tseem nyob rau hauv kev sib cuag nrog qhov nruab nrab ntawm kev txaus siab ntawm qhov ntxeem tau daim nyias nyias (agar agar) tsis iav. Cov iav siv los ntsuas pH. qhov siv hluav taws xob tsuas yog muab qhov hluav taws xob ruaj khov rau kev ntsuas. Cov khoom siv hluav taws xob feem ntau muaj siv vycor tubing. 2. daim nyias nyias ua los ntawm agar agar thiab qee cov tshuaj potassium chloride. Txhawm rau npaj qhov no, yaj qee cov agar agar hauv KCl daws. Txiav ib daim ntawm cov yas yas, kaw ib kawg thiab poob rau hauv cov dej kub. Cia txias thiab teeb. Tom qab ntawd muab cov paj rwb me me tso rau hauv cov tshuaj chloride lossis ntsev tov, thiab muab tso rau hauv lub raj. Sab saum toj tawm ntawm lub raj nrog cov tshuaj agar. 3. Zoo ib yam rau qhov kev sojntsuam pH, ntxig ib daim nyiaj ntawm cov tshuaj chloride xaim rau hauv qhov ntev ntawm lub raj tab sis saum cov paj rwb. Cia nws zaum ib pliag thiab agar yuav tsum khov. Tom qab ntawd koj muaj lub luag haujlwm siv hluav taws xob.

Kauj ruam 2: Voltmeter

tsuas yog siv lub tshuab hluav taws xob elecronic. cov ntaub ntawv: 1.cov tooj liab (cov hlau nyias nyias, tuaj yeem pom muaj ntau yam khoom siv hluav taws xob) 2. ntoo 3. rab phom 4.lub pluaj yas 5.lub hlau nplaum me 6.a daim straw 7. rab koob xaws 8.2 daim me me hlau yuav ua li cas: 1.if koj cov tooj liab tooj liab tau qhwv ib puag ncig cov khoom uas tsis yog cov khoom siv, zoo heev. yog tias tsis xaim cov xaim thiab qhwv nws ib puag ncig cov khoom uas tsis yog cov khoom siv. 2.to ua tus ncej coj ib daim ntoo txog 6 "x6". thiab kua nplaum 2 lwm daim (li 1/2 "tuab) txog 1/2 thiab ntiv tes sib nrug sawv, qhov no yuav txhawb nqa cov kabmob rau voltmeter. voltmeter thiab lo lawv rau cov khoom txhawb nqa. 4. Luaj ib feem plaub ntawm cov ntoo mus rau sab ntawm cov kabmob txhawb nqa. Kaw cov kauj rau saum toj ntawm daim ntawv no kom cov hlua txuas tau tig mus deb ntawm cov khoom txhawb nqa. Cov hlau nplaum me me mus rau hauv qab ntawm cov quav thiab thawb lub koob xaws txhua txoj hauv kev hla cov quav nyab ze qhov kawg uas muaj cov hlau nplaum. thaum ib qho tam sim no hla nws 6. Txhua ob daim hlau ntawm qhov kawg ntawm rab koob kom ruaj khov nws thiab khaws hauv qhov zawj. Tam sim no qaij lub hauv paus ntawm lub platform kom cov hlau nplaum los so ze rau ntawm lub kauj. ib qho tam sim no tau thov rau lub kauj, nws yuav tsim hluav taws xob tam sim no hauv th e kauj uas yuav tshem tawm cov hlau nplaum thiab ua rau qhov kawg ntawm cov quav nyab viav vias rau sab. Thaum cov dej ntws tam sim no nres, lub ntiajteb txawj nqus yuav rub lub straw rov qab rau nws qhov xoom taw tes. lub sijhawm los ntsuas nws! txhawm rau ntsuas koj lub voltmeter koj yuav tsum tau txais cov khoom siv uas koj paub tseeb tias muab qhov raug ntawm qhov hluav taws xob. tom qab ntawd koj yuav txuas koj lub voltmeter rau qhov khoom siv no thiab ua qhov ntsuas los ntawm kos cim qhov twg cov quav nyab ntawm txhua qhov hluav taws xob. koj tuaj yeem sau qhov seem los ntawm kev faib qhov chaw sib npaug.

Kauj ruam 3: Circuit Court

cov ntaub ntawv: 1. qhov kev sojntsuam koj nyuam qhuav ua 2. lub voltmeter koj nyuam qhuav ua 3.operational amplifier (pheej yig heev, $ 2) 4.wire 5.soldering hlau 6.solder 7.2 9 volt roj teeb yuav ua li cas: 1. saib ntawm duab saum toj no ntawm Circuit thiab luam 2. txuas qhov kev sojntsuam mus rau op amp (5) thiab siv cov electrode mus rau qhov tsis zoo kawg ntawm ib lub roj teeb 3. txuas 2 lub roj teeb… 1 lub roj teeb lub davhlau ya nyob twg rau op amp (4), ntawm tus puav mus rau qhov tsis zoo ntawm lwm tus thiab pos ntawm lwm tus rau op amp (8). 4. txuas op amp (6) rau op amp (7). 5. txuas voltmeter kom nws ntsuas qhov muaj peev xwm sib txawv ntawm op amp (6) thiab op amp (7) thiab koj tau ua tiav! ua tsaug rau koj siv sijhawm los nyeem kuv cov lus qhia! thov pov npav yog tias koj nyiam nws!

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