The Pyxis ST-720 and ST-726 are industrial-grade inline conductivity sensors featuring advanced 4-graphite electrode technology for enhanced detection range, accuracy, and stability in demanding environments . The built-in transmitter supports both digital and analog outputs, simplifying on-site installation, calibration, and operation.

The ST-720 covers 1-100,000 µS/cm, while the ST-726 extends to 10-300,000 µS/cm, both maintaining accuracy of ±10µS/cm or 1.5% without frequent recalibration. The 4-graphite configuration resists fouling and deposition in challenging applications . An embedded Pt100 RTD provides automatic temperature compensation with output accuracy of ±0.2% over 32-212°F.

Both sensors offer dual 4-20mA outputs (temperature and conductivity) plus RS-485 Modbus digital communication . The flat sensor surface simplifies cleaning and calibration. Each unit includes a ST-001 ¾" FNPT inline tee assembly, with optional MA-102S submersion adapter for tank applications .

Wireless diagnosis, cleaning, and calibration are supported via MA-WB or PowerPACK Bluetooth adapters and the uPyxis mobile/desktop app . The CPVC body is IP67 rated, operates on 12-36VDC at 1W, and includes a 5ft bulkhead cable with 7-pin adapter plus mating female flying-lead cable . Typical applications include industrial process water, surface water monitoring, wastewater, and stormwater systems.