Error Stipulated by the Variations of Emf

This error s component (the second item of (6.15)) consists of several items error by the current in the measuring circuit, error by the nonionic component of conductivity, error by the nonisothermic character of electrodes in flamess, error stipulated by the thermoelectric effect, and error by the secondary measuring device. 

As has been shown above, the average ionic transference number t at the above-mentioned ranges of oxygen pressures and temperatures is equal to 1, and conse-qnently, this error, stipnlated by the nonionic component of condnctivity (8Pi92(I))e2. can also be ignored. 

The component of error by the nonisothermic character of electrodes in flatness calcnlates by eqnation (8Po2 )e3 = Ae R(Teq - To)/4F In Po2(fi)IPo2G)), where 

The component of error, stipulated by the thermoelectric effect, appears at the heterogeneity of the temperature field of the SEC  

The limit allowable main error of the electrometer B7-30 is calculated by equation AE5 = (A + O.OIE), where A is the electrometer discredit error E is the real value of the measuring parameter. Based on the fact that the electrometer B7-30 possesses a multiple error of 1% and an additive error equal to the two lowest ranks within the whole measurement range, it is preferable to use the SEC generating small emf (P02(n)/7 02(I) 1+), with the condition that the error of measurement 

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