Ph meter kuj tuaj yeem ntsuas cov txiv hmab txiv ntoo
Dab tsi ntawm pH meter yuav tsum tau siv los ntsuas cov txiv hmab txiv ntoo?
Txij li cov jams, jellies thiab kua txiv hmab txiv ntoo tag nrho muaj cov kev xav tau zoo thiab zoo ib yam, nws yog ib qho tseem ceeb uas yuav tsum tau siv pH tswj hauv cov txheej txheem no. Flavor, xim thiab stability yog qhov tseem ceeb hauv kev txiav txim siab zoo. pH cuam tshuam gelling, tsw thiab txee lub neej ntawm cov khoom. Feem ntau, cov zaub mov acids (xws li lactic acid) tau ntxiv kom qis pH. Pectin tsuas yog tsim cov colloids nyob rau hauv ib tug tej yam pH ntau yam, nyob ntawm seb tus nqi ntawm cov khoom soluble muaj. Yog li ntawd, thaum lub sij hawm zus tau tej cov jams, jellies thiab kua txiv, ntxiv ntawm edible acids yog tswj los ntawm online pH ntsuas. Cov txheej txheem no tuaj yeem ua kom qhov tseeb ntawm kev tsim khoom thiab paub txog cov txheej txheem automation.
Yuav ua li cas ntsuas acidity
Ua ntej, cov khoom xyaw tseem ceeb (xws li: txiv hmab txiv ntoo thiab qab zib) yog tov thiab pasteurized ntawm 105 C (220 F). Tag nrho cov khoom feem ntau muaj 60-65% qab zib thiab qee zaum muaj cov txiv hmab txiv ntoo. Tom qab txias, cov ntaub ntawv nyoos no raug xa mus rau lub tank ua noj, thaum cov khoom ntxiv xws li cov txuj lom, pectins thiab edible acids ntxiv rau lub thawv kaw thaum nplawm ntawm 80 txog 100 C (176-212 F), 1.2 txog 1.3 bar ( 18-19 psi). Premixer. Lub siab thiab kub ntawm cov txheej txheem yog nyob ntawm qhov loj ntawm lub nkoj, qhov chaw installation thiab cov khoom. Cov zaub mov acid ntxiv kom txog thaum pH nce mus txog qhov xav tau. Feem ntau tus nqi pH yog 2.8-3.2 (txiav txim siab los ntawm cov khoom). Thaum lub sij hawm ua noj ua haus, kev tswj pH tas li yog ua los kho tus nqi ntawm cov kua qaub ntxiv. Yog tias pH qis dhau (piv txwv li kua pectin<2.8), the pectin will begin to harden, become brittle and form prematurely. Beyond a certain pH range, it is impossible to form a gel.
Rau kev ntsuas pH hauv jams, jellies thiab kua txiv, cov qauv hauv qab no tau pom zoo:
a) Sab installation ntawm pH meter:
Sheath: Retractable InTrac777, H=70mm, phau ntawv los yog pneumatic expansion thiab contraction. Cov cuab yeej no tuaj yeem thim rov qab cov electrode mus rau hauv lub tshuab nqus dej kom ntxuav tsis cuam tshuam cov txheej txheem tsim khoom, thiab tseem tuaj yeem nqa cov electrode tawm rau kev kho.
b) Sab installation ntawm pH meter:
Composite pH electrode: HA405-DPA-SC-S8/120 nrog nyiaj ion ntxiab
Sheath: InFit 761-50CIP/70
c) Pom zoo transmitter rau pH acidity meter: 2500 nrog Sensocheck, uas tuaj yeem txheeb xyuas cov teeb meem ntawm electrode (piv txwv li: electrode puas). Kev ntsuas cov ntaub ntawv tuaj yeem xa ncaj qha mus rau lub computer tswj system. Kev saib xyuas qis pH electrode HA405-DPA-SC-S8. Cov gel electrode no yog pre-pressurized rau 2.5 bar (36 psi) thiab yog li ntawd tsis xav tau ib tug pressurized sheath rau siv xws li kua electrolyte electrodes.
Nws kuj tseem siv tau los ntsuas cov txiv hmab txiv ntoo. Nws tuaj yeem pom tias pH meter tuaj yeem tsim kho hauv ntau yam thiab ua lub luag haujlwm rau yav tom ntej. Nws txoj haujlwm muaj zog.
