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Pyxis ST 730B Inline Turbidity Probe

USA Toll Free: 1-800-730-0302 Tel: 416-240-1920 -

ST-730B Series are designed for monitoring the middle range turbidity in various applications. It is more robust and tolerant to fouling, particular matters, and air bubbles comparing to other online turbidity meters designed for relatively clean water applications.

ST-730B series turbidity probe measures two optical densities and two scattering intensities at two wavelengths. This helps measure a large turbidity range and yet maintain a fine resolution. This design also helps the probe run self-diagnoses.

Typical Applications

Industrial water treatment process control, including raw water, cooling water, and wastewater.
Surface water monitoring.
Other chemical processes with middle range of turbidity.


Dual-wavelength: white LED and IR LED 90° scattering to achieve more reliable and accurate reading in a complex flow system.
A small footprint compact design, similar to an industrial pH probe.
Isolated 4-20mA output. No need for additional transmitter for easy connection to PLC and DCS.
Isolated RS-485 output embedded for easy trouble shooting and calibration.

ST 730B Inline Turbidity Probe

ST-730B = Turbidity (0 – 500NTU)

4-20mA & Modbus RS485 Connection

Modbus Connection = Digital Advantage!

Long Sensor Life – Minimal Maintenance

Wireless CalibrationSmart Phone or Pyxis SP Units

Probe fouling diagnostics through PC

Cooling, Surface & Wastewater Applications!

Resolution = 0.1 NTU


ST-730B Quick Start Guide

ST-730B Data Sheet

ST-730B User Manual


About Us

Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


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