27
English
w
w
w
.novasina.com
9.2. Cleaning of the aw-measurement cell „CM-2“
Please do NEVER clean the sensor CM-2 itself. The sensor is a very
sensitive element with a chemical filter protection on the top. Every
cleaning with chemical or mechanical means (touch, blow by air pressu-
re, etc.) will destroy the measuring sensor inevitably. Possible warranty
demands expire instantly.
9.3. Cleaning of the Infrared „IR“ sensor
Clean the IR sensor with a slight humid cotton bud. Do not press strongly on
the window of the IR-sensor. A contaminated IR-sensor leads to longer
measurement times but not to wrong measurements.
9.4. Periodic Recalibration with Humidity Standards
Like all precision measurement instruments, the LabSwift-aw must be
checked periodically and if necessary recalibrated. This procedure was
already described in the chapter 6. Only in this way you can secure the
accuracy of your measurements. The Novasina SAL-T humidity standards are
applicable for this procedure. If required the standards can be provided with an
international accredited certificate.
There are no general rules for the periodic control of the system. This mainly
depends on the product character, the frequency of measurement, further
ambient conditions and the aging of the sensor. Novasina recommends the
following steps:
• Verify the instrument monthly at the beginning. Increase the interval step
by step dependent on the correspondent results.
• Check before and after the measurement of problematic samples the aw-
range with the nearest SAL-T.
Further information can be find in the chapter 6.2.
9.5. Replacing Protective Filters
Always use protection filters to protect the measuring sensor from undesired
particles or aggressive substances. If your samples could emit volatiles it is
necessary to use chemical protection fitlers. The filters can be fit with the
tension ring and provide protection against different substances in gaseous
form.
Such chemical protection filters have to be replaced periodically, due to the
fact that they get saturated. Filters can increase the measurement time and
they incativate the IR-temperature measurement.
To Next Page
Loading...
Need help?
General
