ROTRONIC HC2-AW-USB - Manual (Page 5)

E-M-HC2-AW-USB-V1_11
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
Water Activity and Temperature Probe
HC2-AW-USB: User Guide Instruction Manual
Document Type
Page 5 of 18
Document title
© 2011-2012; Rotronic AG E-M-HC2-AW-USB-V1_11
4 Required accessories
Use of the HC2-AW-USB probe requires the following:
1) PC or Laptop
The following are the minimum values required of the PC or laptop. It is highly recommended to exceed these
values.
o
Processor: 1 GHz
o RAM: 512 MB
o Available hard disk space: 50 MB
o Monitor: SVGA, 1280 x 960, 65535 colors
o One free USB port
Operating system: Windows XP Service Pack 2 or Vista, Windows 7 with the Microsoft .NET framework
(version 2.0 or higher) installed.
2) HW4 Software Professional Edition with AwQuick
HW4 Professional with AwQuick is a special version of HW4 Professional designed to facilitate measurement
of the water activity (Aw) of foods, pharmaceuticals, etc. This version includes all the features of the regular
HW4 Professional Edition. Two modes are available for measuring water activity: AwE and AwQuick. Both
modes can be used with any of our instruments. In the AwE mode, HW4 monitors the natural equilibration of
the product being measured and automatically stops the measurement process when equilibrium is reached.
With most products, natural equilibrium requires from 45 to 90 minutes. The AwQuick mode reduces the time
required to measure water activity to a few minutes, usually with almost the same accuracy as the AwE mode.
3) ROTRONIC USB driver
Communication between the HC2-AW-USB probe and the HW4 PC requires the ROTRONIC USB driver to be
installed on the PC. The driver is included in the HW4 CD-ROM
4) Sample holder and disposable sample cups
WP-40S sample holder with removable depth reduction insert.
The PS-14 cups (shallow) are suitable for calibrating the probe with the Rotronic certified
humidity standards or with saturated salt solutions. In general, use the shallow cups for a
liquid, a paste or a powder. Use the PS-40 (deep) sample cups for products in bulk (large
chunks).