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AquaLab 4TE
Decagon Devices AquaLab 4TE User Manual
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A
quaLab
W
ater Activity M
eter
Operator
’
s Manual
F
or S
eries 4TE, 4TEV
, DUO
V
ersion 7
Decagon D
evices, Inc.
2
Table of Contents
Default Chapter
3
Table of Contents
3
1 Introduction
7
About this Manual
7
Customer Support
7
Warranty
8
Seller's Liability
8
2 About Aqualab
10
Aqualab Model and Options
10
Aqualab 4 Instrument Specifi Cations
10
Aqualab 4 DUO Specifi Cations
11
How Aqualab Works
12
Aqualab and Temperature
12
Chilled Mirror Dewpoint Limitations
14
3 Water Activity Th Eory
15
Moisture Content
15
Water Activity
15
Water Potential
18
Sorption Isotherms
19
4 Getting Started
21
Components of Your Aqualab
21
Choosing a Location
21
Preparing Aqualab for Operation
22
Menus
24
Measurement Tab
24
Confi Guration Tab
25
Admin Settings
31
Data Tab
36
6 Cleaning and Maintenance
38
Cleaning the Block and Sensors
39
Cleaning a Series 4TEV
40
Cleaning Procedure
40
Verifi Cation of Calibration
42
7 Verifi Cation and Calibration
43
Water Activity Verifi Cation
43
Verifi Cation of Calibration
45
8 Sample Preparation
52
Preparing the Sample
52
Samples Needing Special Preparation
53
Slow Water-Emitting Samples
54
Volatile Samples
55
Low Water Activity
56
Samples Not at Room Temperature
56
9 Taking a Reading
58
Measurement Steps
58
How Aqualab Takes Readings
58
Duo Operation (Optional)
61
10 Duo Operation (Optional)
62
Obtaining Product Isotherm Models
62
Loading and Organizing Product Models
62
Moisture Content Adjustment
66
Restore Original Moisture Content Model Settings
70
How to Delete Models
72
11 Computer Interface
74
Aqualink RG
74
Using Windows Hyperterminal
74
12 Troubleshooting
76
If this Problem Occurs: Refer to
77
Aqualab Won't Turn on
77
Readings Are Slow or Inconsistent
78
Problem #5
78
Dew Point Sensor Failure
81
Verifi Cation Is Not Correct
82
13 Support and Repair
89
Repair Costs
90
Loaner Service
90
14 Further Reading
91
Water Activity Th Eory & Measurement
91
Food Safety and Microbiology
95
Preparing Salt Solution
117
Appendix A
117
Temperature Correction
119
Appendix B
119
Aqualab Verifi Cation Standards
120
Appendix C
120
Declaration of Conformity
125
Certifi Cate of Traceability
126
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Decagon Devices AquaLab 4TE Specifications
General
Brand
Decagon Devices
Model
AquaLab 4TE
Category
Measuring Instruments
Language
English
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