ST-525 | Inline Fluorescein Sensor

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SKU: 50665
Weight: 0.37 LBS
Shipping: Calculated at Checkout
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The ST-525 offers a proprietary design that utilizes LED light sources for the direct measurement of Fluorescein (Fluorescein Sodium Salt/Uranine, CAS# 508-47-8). This simple, smart sensor is perfect for a water treatment professional working in industrial boiler water and process treatment applications.

The ST-525 offers proprietary Pyxis Lab® algorithms to determine the concentrations of Fluorescein at levels as high as 60ppb while simultaneously measuring light loss through the optical channel to determine sensor cleanliness. The ST-525 offers a combination of 4-20mA as well as RS-485 Modbus output signals and is Bluetooth Enabled for wireless cleanliness diagnostics and calibration when used with MA-WB or PowerPACK Series Bluetooth Adapters and the uPyxis APP for Mobile or Desktop devices. The ST-525 Series is provided in CPVC with the standard Pyxis ST-001 inline 3⁄4” FNPT Tee assembly, 5-foot bulk-head cable with quick adapter and 1.5ft flying lead cable with quick adapter, enabling rapid wiring to any microprocessor controller, PLC or DCS system.


Item ST-525 Inline Fluorescein Sensor
Part Number 50665
Fluorescein Output Scale 0-60ppb
4-20mA Span via uPyxis® 20mA SPAN value may be adjusted to less than max range via uPyxis®
Fluorescein Resolution ±0.2ppb
Calibration Two Point Calibration against DI Water + Fluorescein Calibration Standard
Power Supply 22-26VDC, Power Consumption – 1W
Outputs Isolated 4-20mA Analog & Isolated RS-485 Digital – 7-Pin
Installation ST-001 Inline Tee (PROVIDED), 3/4inch FNPT
Weight 170g (0.37lbs)
Operation Pressure 100psi (6.9Bar)
Operation Temperature 4-49 °C (40-120 °F)
Storage Temperature -20-60 °C (40-120 °F)
Material UPVC
Rating IP67, Dustproof & Waterproof
Regulation CE + RoHS
Dimensions 6.8in (172.7mm) L x 1.44in (36.6mm) D
Cable Length 1.5m 7-Pin Bulkhead with Adapter + 1.5m 7-Pin Flying Lead with Adapter

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