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5.3 Linearity, maximum concentrations, and calibration
The measuring range and the behavior of the S303 and S304 depends on many factors, such as the dust
material, particle size, flow speed and installation location.
As an indication and averaging of different internal and external tests, Sintrol Products with Inductive
Electrification Technology show the following behavior over the measuring range:
Detection limit: 0.01 mg/m
3
Linear range: from detection limit to several hundred mg/m
3
Nonlinear rang: from linear phase up to several g/m
3
Saturation: after nonlinear range
Figure 2: Illustration of uncalibrated measuring behavior
To measure higher concentrations than 200 mg/m
3
it is critical to have a linear
behaviour we recommend to perform reference measurements at the desired
concentration and add additional calibration points by using Sintrol
DustTool/calibration.
5.4 Influence of relative humidity RH %, condensation, and droplets in the measurement gas
Due to the working principle of the S300 Series, the variation of relative humidity in the measurement gas only
has an insignificant effect on measurements as long as there is no condensation.
Should there be condensate in the gas, these droplets will be detected as dust particles and distort the
measurement signal. No signal or a wrong (most likely too high) signal will be the consequence.
Make sure that the S303 or S304 is installed only in non-condensing conditions to mitigate the
effect of droplets affecting the measurement.
5.5 Influence of ambient temperature
Internal and external tests have shown that ambient temperature has very little effect on Sintrol’s products
using Inductive Electrification Technology.
Figure 3: Effect of Ambient Temperature
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