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Figure 12


Fig. 12. (a) Difference {Delta}C({varepsilon}) between simulated capacitances Cmodel with FEP({varepsilon}) with the FEP coating on the access tube and Cmodel without FEP({varepsilon}) without the FEP coating taken from Fig. 11a. (b) Difference {Delta}N({varepsilon}) between corresponding sensor readings Nmodel with FEP({varepsilon}) and Nmodel without FEP({varepsilon}) taken from Fig. 11b.