AquaLab 4TE Series User Manual

AquaLab 5 MENUS
Sensor
In the AquaLab Series 4TEV model only, this option indicates the
selected sensor type, either dew point or capacitance (The Series 4
and 4TE models will always be dew point). Pressing Enter when the
Sensor option is highlighted allows you to change between a capaci-
tance sensor or chilled mirror dew point sensor for sampling with or
without volatiles, respectively.
Mode
Users may choose between single, continuous, or custom mode by
pushing the save button.
Single Mode: Single mode reads the sample once, after which the
instrument notifies you that it is finished and the water activity and
temperature display on the screen.
Continuous Mode: Continuous mode reads your sample until you
open the chamber lid or stop the test using the stop button. AquaLab
reads the sample, displays the water activity and temperature, then
begins another read cycle without further input from the user. Be-
tween samples, the machine will signal you with beeps. This mode
eliminates the possibility of moisture exchange with the environment
outside the chamber in between readings. A time on the bottom left
of the screen tracks the cumulative read time. All readings taken
during continuous mode are saved on the instrument memory if the
auto save feature is selected (see Auto Save below). If AquaLab is
connected to a computer using AquaLink 4 (See Chapter 11), all
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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