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Summary of Contents for Decagon AQUA LAB VSA
- Page 1 Vapor Sorption Analyzer Quick Start Guide...
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Page 2: Getting Started
V S A Q u i c k S t a r t G u i d e 1. Getting Started— • Place the AquaLab VSA on a flat surface. Use the bubble level(Figure 1: Adjustment and bubble level) and use the adjustable feet to level the instrument. The small rubber feet on the back of the lower plate are to prevent tip-over and do not need to be touching the table. • Use the AquaLab VSA where environmental temperature and humidity remain fairly stable. Bubble Level Adjustment feet: ... - Page 3 V S A Q u i c k S t a r t G u i d e 4. Lightly tap the table with one finger. If the readings vary more than 0.5 mg after tapping, the table is probably too unstable for accurate weight readings during a test and will need to be made more rigid or another location found for this equipment. Contact your AquaLab distributor if the scale readings are unstable after placing the unit on a stable structure. Desiccant Cartridge Desiccant Receiver Black Valve Black Receiving Hole Figure 2: Desiccant installation • ...
- Page 4 V S A Q u i c k S t a r t G u i d e Upper Horizontal Drilled Hole Water Fill Plug Water Tank Fill Extension Water Tank Drain Plug Fan Filter Figure 3: Tank fill extension • Remove the black plug on the clear plastic tank fill extension located on the back right of the VSA. (Figure 3). Fill the tank with deionized water until full. Finger tighten the water fill plug once finished. • To remove the water from the water tank, the water tank ...
- Page 5 V S A Q u i c k S t a r t G u i d e Sample Cup Lid Only used for sample storage and must be removed during tests. Sample Cup Stainless steel cups are recommended. Plastic cups absorb moisture over time. Weighing Pan Air Cylinder Base Block Bore Figure 4: Sample cup and lower block assembly • ...
- Page 6 V S A Q u i c k S t a r t G u i d e • To verify, remove weigh pan and then place sample cup containing one of AquaLab’s verification standards in sample chamber. Close lid and carefully avoid spillage; See Figure 5. • Move latch left or press to start a reading. The pinwheel spins to indicate a measurement is running. The reading for the standard and the temperature ...
- Page 7 V S A Q u i c k S t a r t G u i d e • Ensure sample temperature is within 4 °C of chamber temperature. 4. Starting a Test— • Before starting a test, set the Volatiles: Yes/No option in the configuration menu. If your sample has volatiles, select “Yes” otherwise select “No”. • On the main screen, select the test wizard . • Following several warnings, begin configuring the test by providing a name for the test using the arrow keys and then press . (The name of a previous test will appear by default.) • Enter initial moisture content if known (optional). Press to continue or ...
- Page 8 V S A Q u i c k S t a r t G u i d e • For DDI method • To choose the starting a , press with “Start” highlighted and then cycle to the desired value using the up and down arrows. Any value between 0.03 and 0.95 a can be chosen including “current”. Choosing “current” means that the stage will start at the initial a of the sample. Press when finished. • To choose the final a , press ...
- Page 9 V S A Q u i c k S t a r t G u i d e • To choose to include a timeout setting, press with “Timeout” highlighted, and then cycle to the desired value using the up and down arrows. Any value between 5.0 min to 30 days can be selected. The timeout determines the maximum time allotted to move from the starting to the final (DDI only) and is optional. The default value is off, which means there is no timeout value. • To choose to have the isotherm loop, press with ...
- Page 10 V S A Q u i c k S t a r t G u i d e the up and down arrows. Choosse any value between 0.003 and 1.0 . The step setting for DVS determines values for equilibration and consequently the resolution. If starting is 0.1 and has a step setting of 0.10 results in humidity being controlled to 0.1, 0.2, 0.3 … up to the final , remaining at each level until either equilibrium is achieved based on the trigger value or it reaches the timeout value. Setting a higher value makes the test faster, but decreases the quantity ...
- Page 11 V S A Q u i c k S t a r t G u i d e • The delete entry is used to remove an unwanted stage. • Follow the message on the screen to place an empty stainless steel cup in the chamber and seal it. Press tare the cup. • Follow the message on the screen to place the sample in the cup and press to weight the sample. • Press to begin the test. 5. Running a water activity test— (Can not be done when isotherm test is running) •...
- Page 12 2365 NE Hopkins Court Pullman, Washington 99163 USA 1-509-332-2756 instruments@aqualab.com www.aqualab.com 14510 | 13-01-16...