Skip to main content

Autoflo Technology

Pyxis ST-765SS-NCL Monochloramine + pH Sensor – Sensor Only (Stainless Steel)

Stainless steel monochloramine + pH sensor, 0-5ppm, sensor only with no flow reservoir. Dual 4-20mA + RS-485, 8-pin connector.

Pyxis Lab
Electrochemical Sensor
Potable Water Line

Pyxis ST-765SS-NCL Monochloramine + pH Sensor – Sensor Only (Stainless Steel)

Model:
ST-765SS-NCL
Brand:
Pyxis Lab

The Pyxis ST-765SS-NCL is a stainless steel, membrane-less multi-parameter sensor that measures monochloramine, pH, and temperature in a single probe using Pyxis Lab's bare-gold electrochemical detection technology. It is suited to chloramine-based disinfection monitoring in potable and process water, and ships sensor-only without a flow reservoir kit. Dual isolated 4-20mA outputs plus RS-485 Modbus support direct integration with a PLC, SCADA, or third-party controller.

Long electrode life — replaceable, front-loading reference electrode assembly rated for up to 2 years of service
Built for chloramine disinfection — tracks monochloramine and pH together in potable and process water
Long electrode life — replaceable, front-loading reference electrode assembly rated for up to 2 years of service

Description

The Pyxis ST-765SS-NCL is a stainless steel, membrane-less multi-parameter sensor that measures monochloramine, pH, and temperature from a single probe, using Pyxis Lab’s bare-gold electrochemical detection technology. It ships sensor-only, without a flow reservoir kit, for installation into an existing housing.

Monochloramine is measured over a 0-5ppm range, making the sensor well suited to chloramine-based disinfection monitoring in potable and process water. The reference electrode assembly is replaceable and front-loading, reducing startup polarisation time and giving a typical service life of up to 2 years.

Dual isolated 4-20mA outputs plus RS-485 Modbus, via an 8-pin connector, support direct integration with a PLC, SCADA, or third-party controller.

Why Use This

Chloramine disinfection monitoring

Tracks monochloramine alongside pH in one probe, supporting disinfection control in potable and process water systems.

Reduced maintenance

The replaceable, front-loading reference electrode typically lasts up to 2 years and cuts startup polarisation time.

Flexible controller integration

Dual isolated 4-20mA outputs and RS-485 Modbus connect directly to a PLC, SCADA, or third-party controller via an 8-pin connector.

Applications

  • Potable water disinfection monitoring — tracks monochloramine and pH in drinking water systems
  • Chloramine-based process water disinfection — continuous monitoring for treatment programmes
  • PLC/SCADA-integrated control loops — dual 4-20mA and RS-485 Modbus outputs for direct system tie-in

FAQ

What water types is this sensor designed for?

It is suited to chloramine-based disinfection monitoring in potable and process water.

What is the monochloramine measurement range?

The sensor measures monochloramine over a 0-5ppm range, alongside pH and temperature.

Does it include a flow reservoir kit?

No, it ships sensor-only, with no flow reservoir kit included.

What is the expected electrode life?

The replaceable, front-loading reference electrode assembly has a typical service life of up to 2 years.

Download

D25 Product Datasheet
PDF · 1.2 MB
Installation Manual
PDF · 0.8 MB

Resources

How to Size a Chemical Dosing Pump for Water Treatment
Technical Article · 8 min read
Understanding Water-Powered vs Electric Dosing Pumps
Technical Article · 6 min read
Poultry Medication Dosing — Case Study
Case Study · Selangor Poultry Farm
You May Also Need

Related Products

Pyxis RT-200 PRISM High Temperature Inline Refractometer

High-temperature inline digital refractometer measuring refractive index, %BRIX, and glycol concentration up to 120°C. Stainless steel Tri-Clamp body, IP67, built-in Bluetooth 5.0.

Pyxis ST-765SS-CLO Chlorine Dioxide + pH Sensor with FR-50 Flow Reservoir Kit (Stainless Steel)

Stainless steel chlorine dioxide + pH sensor, 0-5ppm, complete with FR-50 flow reservoir kit and rotameter. Dual 4-20mA + RS-485, 8-pin connector.

Controllers
Pyxis pH / ORP Controller

Compact dual-channel controller for pH and ORP monitoring with direct pulse output to dosing pumps.

Accessories
Injection Quill & Check Valve

PVDF injection quill with integral non-return valve for safe chemical injection into pressurised pipelines.

Animal Line

Other Models in This Line

Pyxis ST-765SS-NCL Monochloramine + pH Sensor – Sensor Only (Stainless Steel)
Explore Range
Stay Informed

Latest Resources

Initiate a Project

Need help with selection or sizing?

Our engineers are ready to evaluate your requirements and recommend the right solution.