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Pyxis ST525SS Inline Boiler Probe

USA Toll Free: 1-800-730-0302 Tel: 416-240-1920 -

ST525SS Inline Boiler Probe

The Pyxis ST-525SS Probe uses high temperature-tolerant and humidity-resistant optical filters. It can be operated under a wide range of ambient conditions without the need of humidity and temperature regulation. With this design the performance of the ST-525SS Probe can be stable and consistent for an extended period time. The Pyxis ST-525SS Probe measures the concentration of fluorescein in water, commonly used as a fluorescent tracer in water treatment applications. The 304-stainless steel body of the ST-525SS Probe makes it ideally suited for applications of monitoring boiler feed-water or boiler blowdown after being properly cooled to near the ambient temperature. The 4-20mA current output from the Probe can be connected to any controller that accepts an isolated or non-isolated 4-20mA input.

The ST-525SS Probe is a smart device. In addition to measuring fluorescence, the ST-525SS 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 experienced in real-world applications.

The ST-525SS Probe is easy to calibrate using the uPyxis® Mobile or Desktop App. Any standard containing Fluorescein in the range of 10 to 60 ppb can be used for the calibration of the ST-525SST?he standard may also be the water sample itself if the Fluorescein concentration of the sample is measured and validated by a calibrated offline fluorometer. This allows the ST-525SS Probe to be calibrated online without being removed from the system. The uPyxis® App also provides diagnostic information about the ST-525SS Probe such as: Probe fouling, color or turbidity over range, failure modes, etc. This diagnostic information can also be available via Modbus RTU.

Eliminates Color & Turbidity Interference!

ST525SS = Fluorescein (0-60ppb)

304 Stainless Steel

Boiler Feedwater

4-20mA & Modbus RS485 Connection

Wireless Calibration Smart Phone or Pyxis SP Units

Probe fouling diagnostics through PC

ST-525SS User Manual


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Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


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