12 Product description
46
the opacity measurements strongly depend on the measuring
principle, the wavelength, the measuring angle, and the optical
path length.
The NIR sensor STS 03 is a sensor for monitoring the optical
density or opacity of fluids in order to monitor continuous process
results or to securely indicate changes. In this, the measuring
range is between 0…6 OD, 0...6 AU, 3250 EBC or 0…13,000FAU.
Just like the STS 03, the NIR sensor STS 04 is designed for
monitoring the optical density of fluids, but this sensor is used in
manual or automatic quick-change fittings of the SAW family. By
using quick-change fittings, the sensor can be flushed or removed
with the process running, efficiently preventing corrupt results
caused by coatings on the measuring windows and allowing for
secure long-term monitoring of processes.
The measuring range of the STS 03/04 sensors is as follows
referred to the different measuring units:
0…6 OD optical density
0…3 AU absorption units
0…3.250 EBC European Brewery Convention
0…13.000 FAU formazine absorption unit
0…13.000 TEF opacity units formazine
0…26.650 mg/l milligrams dry substance per litre
The current measured value is shown on the display in each case.
With the help of the function keys, the sensor can be configured.
The display can be removed allowing for the efficient prevention
of any accidental changes to the settings.
12.2 Functions
(MP r) Defines the basic measuring principle of the sensor. The
selection options are absorption measurement and opacity
measurement.
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