Pyxis ST-587SS Stainless Steel Inline PTSA + Turbidity Sensor
316L stainless steel inline fluorometer measuring PTSA (0–500ppb) and turbidity (0–200NTU) with colour and turbidity compensation. Rated to 290psi, suited to data centre and high-pressure cooling systems.
Pyxis ST-587SS Stainless Steel Inline PTSA + Turbidity Sensor
The Pyxis ST-587SS is a 316L stainless steel inline sensor that measures PTSA concentration and turbidity using LED UV and warm white light sources, built for high-pressure water systems operating up to 290psi. Automatic colour and turbidity compensation corrects for interference as high as 150NTU, and low power draw with built-in transmitters suits direct DCS/PLC integration. It is well suited to data centre condenser and technology cooling water quality monitoring.
Description
The Pyxis ST-587SS Series inline sensor measures PTSA concentration in water, using both LED UV and warm white light sources. PTSA is commonly used as a fluorescent tracer in cooling and process water treatment applications, particularly where turbidity measurement is a critical parameter. This 316L stainless steel version is built for high-pressure water systems above 100psi (6.9 Bar), operating up to 290psi.
Extra photo-electric components measure sample colour and turbidity, giving automatic compensation to eliminate interference as high as 150NTU, along with in-situ sensor cleanliness diagnostics. A narrow-wavelength-band gallium phosphide photodiode paired with temperature- and humidity-resistant optical filters keeps the sensor stable across a wide range of ambient conditions, and its short fluidic channel design is easier to clean than fluorometers with a flat distal sensor surface or a long, narrow fluidic cell.
The sensor connects to any device accepting isolated or non-isolated 4-20mA input, or RS-485 Modbus, with calibration and cleaning handled via the MA-CR Bluetooth/USB adapter and uPyxis app. Low power demand (under 1.5W) and built-in transmitters make it well suited to data centre cooling applications, including condenser and technology cooling water quality monitoring.
Why Use This
Built for high-pressure systems
316L stainless steel construction operates up to 290psi, above the 100psi limit of the standard UPVC ST-587.
Accurate despite high turbidity interference
Automatic compensation corrects for turbidity interference as high as 150NTU, keeping PTSA readings reliable.
Low power for data centre cooling
Under 1.5W power draw with built-in transmitters supports direct DCS/PLC integration for condenser and technology cooling water monitoring.
Applications
- High-pressure cooling water treatment — PTSA and turbidity monitoring up to 290psi
- Data centre cooling water quality monitoring — condenser and technology cooling water tracking
- Industrial process water treatment — low-power sensing with built-in DCS/PLC transmitters
FAQ
What makes this different from the standard ST-587?
The ST-587SS uses a 316L stainless steel body built for high-pressure water systems, operating up to 290psi, versus the UPVC ST-587’s 100psi limit.
What PTSA and turbidity ranges does it cover?
PTSA range is 0-500ppb and turbidity range is 0-200NTU, with automatic compensation for interference as high as 150NTU.
Is it suited to data centre cooling systems?
Yes, it is well suited to data centre condenser and technology cooling water quality monitoring, with power draw under 1.5W and built-in transmitters for direct DCS/PLC integration.
How is it calibrated and cleaned?
Diagnosis, cleaning, and calibration are handled via the MA-CR Bluetooth/USB adapter and the uPyxis mobile or desktop app.
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