AquaLab 4TE Series User Manual

AquaLab 12 TROUBLESHOOTING
SOLUTIONS:
1. The sample is too dry for the instrument to read accurately.
If your sample has a water activity that is less than below the
detection limits of the instrument, this message will come up.
Essentially, it means that there is not enough sample moisture
to condense on the mirror and provide a reading.
2. Or the mirror may be dirty. Try cleaning the mirror and cham-
ber and measuring the sample again.
6. PROBLEM:
Message on screen displaying dew point sensor failure.
SOLUTION:
The Cooler is damaged and will need to be serviced by Decagon.
See Chapter 12 for detailed instructions.
7. PROBLEM:
Message on screen displays the following:
69

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