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Figure 4: Sample cup and lower block assembly

   •  Figure 4: assembly illustrates the proper positioning of the 

       parts in the lower block. The air cylinder is placed into 

       the bore of the base block. It should slide into the block 

       easily and settle at the bottom of the bore. The weigh 

       pan connects to the scale and holds the sample cup. For 

       best results, verify cleanliness of all parts.

2. AquaLab VSA Performance Verification overview—

  •  AquaLab VSA performance and cleanliness should be 

    checked frequently; before each isotherm test is  

    recommended. 

  •  Press   until you are at the Measurement Tab.

  •  Use AquaLab Verification Standards to verify performance 

    or adjust linear offset.

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

Содержание AQUA LAB VSA

Страница 1: ...Vapor Sorption Analyzer Quick Start Guide...

Страница 2: ...nmental temperature and humidity remain fairly stable Figure 1 Adjustment and bubble level The AquaLab VSA needs to be on a stable platform and evaluated to verify shipping did not damage the scale pe...

Страница 3: ...esiccant installation Desiccant tubes are installed by orienting the tube so that the black colored valve inserts into the black receiving hole as shown in Figure 2 Before insertion make sure that the...

Страница 4: ...er tighten the water fill plug once finished To remove the water from the water tank the water tank drain plug is used Figure 3 shows the location of a filter that will need to be removed from time to...

Страница 5: ...cup For best results verify cleanliness of all parts 2 AquaLab VSA Performance Verification overview AquaLab VSA performance and cleanliness should be checked frequently before each isotherm test is...

Страница 6: ...The aw reading for the standard and the temperature displays when finished Make sure the aw reading on the standard is within 0 005 of the correct aw for the standard 0 02 if cap sensor is used If an...

Страница 7: ...e settings for that portion of the isotherm Once a stage is created it can be modified or deleted anytime before the test is started i e For milk powder Stage 1 could use the DDI method to ramp quickl...

Страница 8: ...e highlighted and then cycle to the desired temperature using the up and down arrow keys hold down arrows for accelerated scrolling You may choose any temperature between 15 and 60 C 25 C is default E...

Страница 9: ...art highlighted and then cycle to the desired value using the up and down arrows Any value between 0 03 and 0 95 aw can be chosen including current Choosing current means that the stage will start at...

Страница 10: ...to indicate equilibrium for a given step Setting a higher value will make the test faster but may not result in complete equilibrium If the trigger is turned off the sample will be held at each step...

Страница 11: ...be done when isotherm test is running Remove the weighing pan Press until you are at the Measurement Tab 2nd tab Move latch left and or press to start a reading The pinwheel will spin indicating a me...

Страница 12: ...2365 NE Hopkins Court Pullman Washington 99163 USA 1 509 332 2756 instruments aqualab com www aqualab com 14510 13 01 16...

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