STs Series Dissolved Oxygen Sensor

Description

The pHionics STs Series™ Dissolved Oxygen sensor (or sonde) accurately measures dissolved oxygen (0-20 mg/L or percent saturation) and temperature (0-50°C) over long periods of time with little maintenance required.  These measurements are output via two noise-resistant 4-20 mA signals compatible with most systems.

A narrow diameter allows the STs Series to go where other sensors cannot while the durable, chemical-resistant housing ensures many years in-use.  The electrode tip (anode) has a large surface area that improves oxygen exchange consistency across the membrane while reducing the frequency of fouling.

In contrast to other dissolved oxygen sensors that require membrane and reference solution replacement every 3-6 months, the STs Series Dissolved Oxygen typically only requires electrode replacement every 2-3 years.  In addition, the rugged Teflon® membrane resists scratches and tears that would put other sensors out of commission.  When electrode replacement is needed, the procedure is done within 30 seconds, as shown in the video below. All these features free you up to focus on actionable insights from the data instead of spending time performing maintenance or troubleshooting.

Ranges available:

• 0-20 mg/L or 0-200% saturation depending on scaling with datalogger or RTU