Chapter 2
Site requirements
Page 2-4
MAN 0486
Note
Only use the PSU/cables provided. Using another PSU voids any war-
ranty and may be unsafe.
Additional services
Laser safety
Zetasizer Nano instruments are Class 1 laser products and as such, require no spe-
cial laser safety considerations during normal operation. However, during servicing
(which must be performed by a qualified Malvern representative), the servicing
engineer may be exposed to class 3b, or above, laser radiation. We therefore recom-
mend that the administrative controls recommendations of the Laser Safety Regu-
lations (IEC 60825-1(1993) +A1(1997)+A2(2001) are implemented.
Purge specification
If measuring samples at low temperatures there is a risk of condensation occurring
on the cell; this occurs when the measurement temperature is less than the ‘dew
point’ of the ambient air surrounding the cell being measured. This is particularly
likely in humid climates.
The purge inlet port can be used to connect a dry air supply to the instrument, i.e. a
supply with a dew point below the target temperature. This removes any moisture
in the air immediately surrounding the cell and prevents condensation. The air
supply must conform to the following specification:
Compressed air to DIN 8573-1
Oil = Class 1
Water = Class 3
Particulate = Class 3
Pressure = 100 kPa g
For connection purposes, the purge connection uses an M5 internal thread.
Caution!
The purge air line supply must conform to the above specification. Failure
to meet this specification may result in permanent damage to the instru-
ment and invalidate the warranty.
Zetaszier Nano Basic Guide (Man0486-1.0).book Page 4 Monday, September 10, 2012 2:19 PM
