+ good design
+ reliable results
- inadequate low battery
- bad manual routines
The design was very good rea-
lized. Both visual appearance
and technical function were
impressing. Both the sample
cell and the instrument suited
their purposes well. One examp-
le of good design was a small
fan that increased convection
in the measurement cell.
The software of the device was
quite satisfying. It was possible
to choose different measure-
ment modes, either continuous
or terminated when adjustable
criteria (change in aw per minute)
was reached. An extrapolating
result calculation that worked
better than expected was also
No manual was submitted by the Swedish agent. After request, however, a dense information
sheet in English was submitted.
Calibration was easily performed by pushing buttons according to description in the manual.
The measurements were easily accomplished and gave stable results as seen in the diagram, below.
The main disadvantage with this instrument was caused by decreasing battery voltage. When
battery voltage fell, the measurement results decreased at least 0.01 aw. A warning of low voltage
appeared at the instrument display significantly later after a decrease in aw was noted.
|Deviation versus aw for HygroPalm AW with measurement cell
AwVC-DIO in four measurement series.
|Test of PawKit||aw instrument test introduction|
|Test of Testo 650||Summary - Portable instruments||EminTech Start Page|