Pyxis ST-765P-O3 Ozone + pH Sensor (CPVC)
CPVC oxidizer + pH + temperature sensor measuring Ozone 0.00-2.00ppm with pH compensation to pH 9.0. Replaceable front-loading reference electrode, Bluetooth-ready with MA-CR adapter.
Pyxis ST-765P-O3 Ozone + pH Sensor (CPVC)
The ST-765P-O3 is a CPVC-bodied, membrane-less sensor that measures Ozone 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-O3 is a CPVC-bodied, membrane-less sensor that measures Ozone 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 Ozone 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
- Ozone-based potable water treatment — continuous ozone and pH monitoring in clean water systems
- Secondary and domestic water supply monitoring — CPVC body suited to non-industrial clean water applications
- Decorative water features — ozone residual control for fountains and similar installations
- PLC/SCADA dosing integration — dual 4-20mA and RS-485 outputs support automated ozone dosing control
FAQ
What ozone range can this sensor measure?
It measures ozone across a 0.00-2.00ppm range, with oxidizer precision of ±0.01mg/L or 1% of value.
How does electrode life compare to conventional ozone sensors?
The replaceable, front-loading reference electrode avoids membrane and gel replacement, giving a typical service life of up to 2 years.
What standards does it comply with?
It’s compliant with USEPA-334.0 and ISO-7393 methodology and carries CE / RoHS regulation.
Can I calibrate it wirelessly?
Yes, with the optional MA-CR Bluetooth Adapter, which enables wireless calibration and diagnostics via the uPyxis mobile app.
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