Appendix; Conductivity Standards; Examples Of Temperature Coefficients (Α-Value) - Mettler Toledo FiveGo FG3 Bedienungsanleitung

8.

Appendix

8.1

Conductivity standards

T( °C)
5
0
5
20
25
30
35
8.2 Examples of temperature coefficients (α-value)
Substance at 25 °C
HCl
KCl
CH COOH
3
NaCl
H SO
2 4
HF
α-coefficients of conductivity standards for a calcualation to reference tempearture of 25°C
Standard
84 µS/cm
1413 µS/cm
12.88 mS/cm
METTLER TOLEDO FiveEasy™ / FiveGo™ conductivity meter
Five_cond.indb 15
84 µS/cm 1413 µS/cm
53 μS/cm 896 μS/cm
60 μS/cm 020 μS/cm
68 μS/cm 47 μS/cm
76 μS/cm 278 μS/cm
84 μS/cm 43 μS/cm
92 μS/cm 552 μS/cm
0 μS/cm 667 μS/cm
Concentration [%] Temperature coefficient α [%/°C]
0 .56
0 .88
0 .69
0 2.4
0 .28
.5 7.20
Measurement Measurement
temp.: 15°C temp.: 20°C
.95 .95
.94 .94
.90 .89
12.88 mS/cm
8.22 mS/cm
9.33 mS/cm
0.48 mS/cm
.67 mS/cm
2.88 mS/cm
4.2 mS/cm
5.39 mS/cm
Measurement Measurement
temp.: 30°C temp.: 35°C
.95 2.0
.94 .99
.9 .95
Appendix
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13.03.2007 16:07:42