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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 

a

w

 reading for the standard and the temperature 

    displays when finished. Make sure the 

a

w

 reading 

    on the standard is /-0.005 of the correct 

a

w

 for the 

    standard. (+/- 0.02 if cap sensor is used)

  •  If an offset adjustment is needed, refer to chapter 7 in the 

    user’s manual.      

Figure 5: Sample chamber

3. Sample Preparation—

  •  Fill sample cup no more than half full (~7ml).  

  Do Not Overfill!

  •  Sample size can be between 500 and 2,000 mg.  We 

       recommend 1000 mg.

  •  Ensure the rim and outside of sample cup are clean.

Lid

Base

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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