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Pyxis ST-765 Series Oxidizer + pH Sensor

  • NG # 04358-HW-PYXIS-017

The Pyxis ST-765 Series Oxidizer + pH Sensor is a high-precision, multi-parameter inline water quality sensor designed for real-time measurement of oxidizers (such as free chlorine or chlorine dioxide), pH, and temperature. It uses advanced membrane-less electrochemical technology to deliver accurate, low-maintenance monitoring for clean water and industrial applications.

Manufactured By :
Pyxis
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Need Help Ordering?
Call +88 01714243446

Stock

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Overview

The Pyxis ST-765 Series Oxidizer pH Sensor is an advanced water quality monitoring device developed for continuous, real-time analysis of disinfectant levels and pH balance in water systems.

It measures oxidizers like free chlorine or chlorine dioxide along with pH and temperature using a unique bare-gold electrode system that eliminates the need for traditional membranes or chemical reagents. This design reduces maintenance requirements while improving long-term stability and accuracy.

The sensor automatically compensates for pH and temperature variations, ensuring reliable oxidizer readings even under changing water conditions. It is widely used in potable water systems, industrial water treatment, secondary water supply, and clean water applications where precise disinfection control is required.

With dual analog (4–20 mA) outputs and RS-485 Modbus communication, it integrates easily into modern monitoring and control systems.

Specification

  • Measurement Parameters: Free chlorine / chlorine dioxide (varies by model), pH, temperature
  • pH Range: 0–14
  • pH Accuracy: ±0.01 pH
  • Oxidizer Range: 0–5 ppm (auto-ranging depending on model)
  • Oxidizer Accuracy: ±0.01 mg/L or ±1% (with pH compensation)
  • Operating Temperature: 4°C to 40°C (40°F to 140°F)
  • Storage Temperature: -7°C to 60°C
  • Maximum Pressure: 100 psi (6.9 bar)
  • Flow Rate: 200–400 mL/min (via FR-50 flow system)
  • Power Supply: 22–26 VDC, approx. 2 W power consumption
  • Output Signals: Dual isolated 4–20 mA + RS-485 Modbus
  • Sensor Body Material: 304 stainless steel (also CPVC option available)
  • Protection/Compliance: EPA 334.0, ISO 7393, CE, RoHS
  • Electrode Type: Replaceable front-loading electrode assembly (approx. 2-year life)
  • Maintenance: Membrane-free design, low maintenance requirement 

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