Pyxis ST-765P-CLO Chlorine Dioxide + pH Sensor (CPVC)
CPVC oxidizer + pH + temperature sensor measuring Chlorine Dioxide (ClO2) 0.00-5.00ppm (auto-range) with pH compensation to pH 9.0. Replaceable front-loading reference electrode, Bluetooth-ready with MA-CR adapter.
Pyxis ST-765P-CLO Chlorine Dioxide + pH Sensor (CPVC)
The ST-765P-CLO is a CPVC-bodied, membrane-less sensor that measures Chlorine Dioxide alongside pH and temperature in a single probe, using Pyxis Lab's bare-gold electrochemical detection technology. Internal pH compensation up to pH 9.0 keeps oxidizer readings consistent with DPD wet chemistry and compliant with USEPA-334.0 and ISO-7393 methodology. The replaceable, front-loading reference electrode avoids the membrane and gel replacement of older amperometric designs, giving a typical service life of up to 2 years.
Description
The ST-765P-CLO is a CPVC-bodied, membrane-less sensor that measures Chlorine Dioxide alongside pH and temperature in a single probe, using Pyxis Lab’s bare-gold electrochemical detection technology. Internal pH compensation up to pH 9.0 keeps oxidizer readings consistent with DPD wet chemistry and compliant with USEPA-334.0 and ISO-7393 methodology.
The reference electrode assembly is replaceable and front-loading, developed independently by Pyxis Lab to avoid the membrane and gel replacement associated with older amperometric designs. This gives reduced polarization time on startup and a typical electrode service life of up to 2 years, with a flat, fouling-resistant front-end that’s straightforward to clean in place.
Dual isolated 4-20mA outputs plus RS-485 Modbus support integration with a PLC, SCADA, or third-party controller, and the optional MA-CR Bluetooth Adapter adds wireless calibration and diagnostics via the uPyxis mobile app. The CPVC body suits clean water applications including potable water, secondary water supply, domestic water, and decorative water features.
Why Use This
DPD-Consistent Accuracy
Internal pH and temperature compensation up to pH 9.0 keeps Chlorine Dioxide readings aligned with DPD wet chemistry and USEPA-334.0 / ISO-7393 methodology.
Lower Maintenance
The replaceable, front-loading reference electrode avoids membrane and gel replacement, with a typical service life of up to 2 years and reduced startup polarization time.
Flexible Integration
Dual isolated 4-20mA outputs and RS-485 Modbus connect to a PLC, SCADA, or third-party controller, with optional Bluetooth calibration via the MA-CR adapter.
Applications
- Potable water chlorine dioxide monitoring — continuous oxidizer and pH tracking in clean water systems
- Secondary and domestic water supply monitoring — CPVC body suited to non-industrial clean water applications
- Decorative water features — chlorine dioxide control for fountains and similar installations
- PLC/SCADA dosing integration — dual 4-20mA and RS-485 outputs support automated dosing control
FAQ
What does the ST-765P-CLO measure?
It measures Chlorine Dioxide alongside pH and temperature in a single probe, with oxidizer precision of ±0.01mg/L or 1% of value.
How long does the electrode typically last?
The replaceable, front-loading reference electrode has a typical service life of up to 2 years, avoiding the membrane and gel replacement of older designs.
What standards does it comply with?
It’s compliant with USEPA-334.0 and ISO-7393 methodology and carries CE / RoHS regulation.
Can this sensor connect to my existing control system?
Yes, via dual isolated 4-20mA analog outputs plus RS-485 Modbus for integration with a PLC, SCADA, or third-party controller.
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