AquaLab 4TE Series User Manual

16 APPENDIX B AquaLab
16 Appendix B
Temperature Correction
of Decagon’s Verification Standards
Table 5: Water Activity of Selected Salt Solutions
Temp. H
2
O
0.50 2.33 6.00 8.57 13.40
(
◦
C)
mol/kg mol/kg mol/kg mol/kg mol/kg
KCL NaCL NaCL LiCl LiCl
15.0 1.000 0.984 0.923 0.761 0.492 0.238
20.0 1.000 0.984 0.922 0.760 0.496 0.245
25.0 1.000 0.984 0.920 0.760 0.500 0.250
30.0 1.000 0.984 0.920 0.760 0.504 0.255
35.0 1.000 0.984 0.920 0.760 0.508 0.261
40.0 1.000 0.984 0.921 0.760 0.512 0.266
50.0 1.000 0.984 0.894 0.740 0.517 0.275
Note: AquaLab will measure these verification standards to ±0.003
a
w
.
102

AquaLab 4TE Series Specifications

General

Accuracy	±0.003 aw
Temperature Control	15 to 50 °C
Measurement Time	5 minutes
Measurement Principle	Chilled Mirror Dewpoint
Resolution	0.0001 aw
Temperature Accuracy	±0.1 °C
Communication	USB, RS-232
Display	LCD
Measurement Range	0.03 to 1.00 aw
Operating Temperature	4-50 °C (39-122 °F)
Data Storage	8000 readings
Power Supply	50/60 Hz
Storage Temperature	-20 to 50 °C