Pyxis ST-728 Inline Stainless Steel Ultra-Low Conductivity + Temperature Analyser (Lowest Range)
Stainless steel inline ultra-low conductivity + temperature analyser (0.02-10uS/cm). Dual 4-20mA + RS-485, 8-pin.
Pyxis ST-728 Inline Stainless Steel Ultra-Low Conductivity + Temperature Analyser (Lowest Range)
The Pyxis ST-728 is a stainless steel inline conductivity and temperature analyser offering the lowest range in the ultra-low series, at 0.02-10uS/cm. It reports conductivity and temperature from a single sensor, with dual 4-20mA analog outputs plus RS-485 Modbus via an 8-pin connector for integration into process control systems.
Description
The Pyxis ST-728 is a stainless steel inline conductivity and temperature analyser offering the lowest range in the ultra-low series, at 0.02-10uS/cm. It’s built for the purest process water streams, where even the finer 0.02-200uS/cm range of other ultra-low models would not provide adequate resolution.
It reports conductivity and temperature from a single sensor, housed in a stainless steel body for durability in industrial settings.
Dual 4-20mA analog outputs plus RS-485 Modbus via an 8-pin connector support integration into process control systems.
Why Use This
Ultra-High-Purity Monitoring
The lowest range in the ultra-low series (0.02-10uS/cm) is built for monitoring the purest process water streams.
Durable Construction
Stainless steel body suits demanding industrial installations.
Flexible System Integration
Dual 4-20mA outputs and RS-485 Modbus support integration with control systems.
Applications
- Ultrapure water monitoring — for the purest process streams requiring maximum resolution
- Semiconductor and pharmaceutical water systems — tracking trace conductivity levels
- Final-stage RO/deionization monitoring — verifying purity at the lowest conductivity levels
FAQ
What is the measurement range of the ST-728?
It measures 0.02-10uS/cm, the lowest range in the ultra-low conductivity series, built for the purest process water streams.
How does it compare to the ST-724 and ST-725?
It has a tighter top end than both — 10uS/cm compared to 1,000uS/cm for the ST-724 and 200uS/cm for the ST-725 — giving finer resolution for the purest streams.
Does it measure temperature too?
Yes, from the same inline sensor as conductivity.
What outputs are available?
Dual 4-20mA analog outputs plus RS-485 Modbus, via an 8-pin connector.
Resources
Related Products
Inline fluorometer and turbidimeter measuring PTSA (0–500ppb) and turbidity (0–200NTU) with colour and turbidity compensation. UPVC body suited to pressures below 100psi.
CPVC oxidizer + pH + temperature sensor measuring Free Chlorine 0.00-5.00ppm (auto-range) with pH compensation to pH 9.0. Replaceable front-loading reference electrode, Bluetooth-ready with MA-CR adapter.
Compact dual-channel controller for pH and ORP monitoring with direct pulse output to dosing pumps.
PVDF injection quill with integral non-return valve for safe chemical injection into pressurised pipelines.
Other Models in This Line
Latest Resources
Need help with selection or sizing?
Our engineers are ready to evaluate your requirements and recommend the right solution.