ST-590 Inline Fluorescent Polymer Probe

The Pyxis ST-590 inline fluorometer probe measures the concentration of Fluorescent Polymer in water. It can be simply inserted to the compression fitting port of a custom-made tee. The standard ST-001 installation tee provided with each ST-590 sensor, has two 3⁄4 inch female NPT ports and can be placed to an existing 3⁄4 inch sample water line. Pyxis Lab also offers 2” and 3” Tee formats for larger flow installations. The 4–20mA current output of the ST-590 probe can be connected to any controller that accepts an iso- lated or non-isolated 4–20mA input. The ST-590 probe is a smart device. In addition to measuring polymer fluorescence, the ST-590 probe has extra photo-electric components that monitor the color and turbidity of the sample water. This extra feature allows automatic color and turbidity compensation to eliminate interference commonly associated with real-world waters.

The Pyxis ST-590 probe has a short fluidic channel and can be easily cleaned. The fluidic and optical arrangement of the ST-590 probe is designed to overcome shortcomings associated with other fluorometers that have a distal sensor surface or a long, narrow fluidic cell. Traditional inline fluorometers are susceptible to color and turbidity interference and fouling and are difficult to properly clean.

The ST-590 measures Fluorescent Polymer in a water sample and includes the following features:

Easy calibration with using uPyxis® Mobile or DesktopApp.
Automatic compensation for turbidity up to 150 NTU and color created by up to 10 ppm iron or equivalent to 10 ppm humic acid.
Diagnostic information (probe fouling, color or turbidity over range, failure modes) are available in uPyxis® App or via Modbus RTU.
Easy to remove from the system for cleaning and calibration without the need for any tools.

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