Measurements With Airwatch; Types Of Loading; Dynamic Loading; Background Loading - Kemper AirWatch Manual De Uso

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KEMPER AirWatch operating instructions - EN

7 Measurements with AirWatch

7.1 Types of loading

During operation, in principle AirWatch has to deal with two different types of dust
loading:

7.1.1 Dynamic loading

Directly after the dust occurs, particles grouped in clouds occur.

7.1.2 Background loading

The clouds from dynamic loading have dispersed as a homogeneous layer and load
the air evenly over large areas.

7.2 Problems with dynamic loading

Dynamic loading leads to the instantaneous measurement rising relatively quickly,
very high measurements being achieved for a a short time and falling equally quickly
back to the original level.
Not only does this falsify the actual measured result, the automated control of a room
ventilation unit can react to the rapid rise or fall of the measurements with
unnecessary start or stop processes.

7.3 Calculating an average

So that dynamic loading cannot have any significant effect on the measured results,
the measurement is always calculated by generating an average over time.
With this, the size of the time window can be defined freely within two boundary
values. However, it is fundamentally the case that the larger this window happens to
be, the less influence dynamic loading will have.
At the works, the AirWatch is set for the largest possible time window, but this can be
changed as required via the web interface. There is more information about this at:
"Sub-sub-heading 8.3.4"
Part no.: 150 2608
- 68 -
Rev.: 00
Issue: 03/2017
All rights over changes without prior notice and errors reserved.

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