EUTECH INSTRUMENTS ALPHA CON 500 2-WIRE TRANSMITTER Instrukcje Operacyjne Pobierz pdf (Strona 32)

11.2 Appendix 2

The following table shows the various pH values at different

temperature of the solution during calibration.

Temperature

(

pH 1.68

(oxalate)

pH 4.01

(phthalate)

pH 6.86

(tetraoxalate)

pH 7.00

(neutral

phosphate)

pH 9.18

(tetra borate )

pH 10.01

(carbonate)

0 1.67 4.01 6.98 7.12 9.47 10.32

5 1.67 4.01 6.95 7.09 9.38 10.25

10 1.67 4.00 6.92 7.06 9.32 10.18

15 1.67 4.00 6.90 7.04 9.27 10.12

20 1.68 4.00 6.88 7.02 9.22 10.06

25 1.68 4.01 6.86 7.00 9.18 10.01

30 1.69 4.01 6.85 6.99 9.14 9.97

35 1.69 4.02 6.84 6.98 9.10 9.93

40 1.70 4.03 6.84 6.97 9.07 9.89

45 1.70 4.04 6.83 6.97 9.04 9.86

50 1.71 4.06 6.83 6.97 9.01 9.83

55 1.72 4.08 6.83 6.97 8.99 9.81

60 1.73 4.10 6.84 6.98 8.96 9.79

70 1.74 4.12 6.85 6.99 8.92 9.76

80 1.77 4.16 6.86 7.00 8.89 9.74

90 1.80 4.20 6.88 7.02 8.85 9.73

1 2 ... 27 28 29 30 31 32 33 34

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EUTECH INSTRUMENTS ALPHA CON 500 2-WIRE TRANSMITTER Instrukcje Operacyjne Strona 32