Pyxis ST-525-HR Inline Fluorescein Sensor (High Range)
Inline fluorescein tracer sensor, high range (0-500ppb). 4-20mA + RS-485, 7-pin.
Pyxis ST-525-HR Inline Fluorescein Sensor (High Range)
The Pyxis ST-525-HR is an inline sensor that measures dye-tagged (fluorescein) treatment chemical dosing, supporting treatment chemical feed. It reports concentration across a 0-500ppb range and communicates via 4-20mA analog output and RS-485 Modbus through a 7-pin connector.
Description
The Pyxis ST-525-HR is an inline fluorescein tracer sensor built for higher-concentration dye-tagged treatment chemical monitoring. It extends the detection ceiling to a 0-500ppb range, well beyond the standard ST-525’s 0-60ppb, making it suited to treatment programs that run at higher tracer concentrations.
Like other sensors in the ST-525 line, it installs directly into the process water line and reports readings via a 4-20mA analog signal and RS-485 Modbus, wired through a 7-pin connector for integration with standard control and monitoring equipment.
It is intended for facilities and treatment providers that need continuous, real-time verification of dye-tagged chemical feed where dosing concentrations exceed the range of the standard sensor.
Why Use This
Continuous tracer monitoring
Measures dye-tagged (fluorescein) treatment chemical dosing in real time across a 0-500ppb range, giving operators direct visibility into treatment chemical performance.
Easy control system integration
Dual 4-20mA analog and RS-485 Modbus outputs through a 7-pin connector let the sensor feed data straight into existing SCADA or controller setups.
Applications
- Higher-concentration dye-tagged treatment programs — extended range up to 500ppb
- Treatment chemical feed verification — continuous inline tracking of dosing performance
- Boiler and process water treatment — real-time monitoring of treatment chemistries
- Control system integration — 4-20mA and RS-485 Modbus outputs for PLC/SCADA feed
FAQ
How is the ST-525-HR different from the standard ST-525?
The ST-525-HR is a high-range variant, measuring fluorescein tracer up to 500ppb rather than the standard sensor’s 60ppb ceiling.
How does it install?
It is an inline sensor that mounts directly into the process water line for continuous monitoring.
How does it communicate with control systems?
It outputs a 4-20mA analog signal and RS-485 Modbus data through a 7-pin connector.
When should I choose the high-range version over the standard ST-525?
Choose the ST-525-HR when your dye-tagged treatment program runs at concentrations above the standard sensor’s 0-60ppb range, up to 500ppb.
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