Pyxis ST-605 Inline Temperature + Low Range ClO2 Sensor
Inline temperature + low range chlorine dioxide sensor (0-100ppm), 365nm. Dual 4-20mA + RS-485, 7-pin.
Pyxis ST-605 Inline Temperature + Low Range ClO2 Sensor
The Pyxis ST-605 is an inline, temperature-compensated sensor that measures low-range chlorine dioxide (ClO2) using 365nm detection, covering 0-100ppm. It provides dual 4-20mA analog outputs plus RS-485 Modbus communication through a single 7-pin connector, allowing straightforward integration into existing ClO2 disinfection monitoring systems.
Description
The Pyxis ST-605 is an inline, temperature-compensated sensor designed to measure low-range chlorine dioxide (ClO2) concentration using 365nm optical detection, covering 0-100ppm. It is intended for facilities using ClO2 as a disinfectant and needing accurate low-range monitoring rather than broad-spectrum detection.
Because water temperature affects disinfectant readings, the ST-605 automatically compensates for temperature shifts to keep measurements reliable across changing process conditions. It communicates through dual 4-20mA analog outputs plus RS-485 Modbus, delivered via a single 7-pin connector.
This dual-output design allows the sensor to serve both analog-based control panels and digital PLC/SCADA networks from one device, making it straightforward to drop into existing ClO2 disinfection monitoring systems with minimal rewiring.
Why Use This
Precise Low-Range ClO2 Detection
365nm-based low-range detection covering 0-100ppm, with temperature compensation, keeps chlorine dioxide readings accurate as process conditions vary.
Flexible System Integration
Dual 4-20mA analog outputs combined with RS-485 Modbus let the sensor communicate with both analog controllers and networked control systems through one 7-pin connector.
Applications
- ClO2 disinfection monitoring — low-range (0-100ppm) chlorine dioxide measurement in treated water
- Retrofit into existing ClO2 monitoring systems — dual output design simplifies integration
- PLC/SCADA-based disinfection control — RS-485 Modbus enables networked automation
FAQ
What does the ST-605 measure and over what range?
It measures low-range chlorine dioxide (ClO2) using 365nm detection, covering 0-100ppm.
Is the reading affected by water temperature?
No — the ST-605 is temperature-compensated and automatically adjusts ClO2 readings as process water temperature changes.
What outputs are available for integration with a control system?
Dual 4-20mA analog outputs plus RS-485 Modbus communication, all through a single 7-pin connector.
Can this sensor integrate with an existing SCADA system?
Yes. The RS-485 Modbus output allows direct digital integration with PLC/SCADA networks alongside the analog outputs.
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