Pyxis ST-772 Series Luminescent Dissolved Oxygen Sensors

The Pyxis ST-772 Series Luminescent Dissolved Oxygen Sensors are based on the principle of ‘fluorescence quenching’ to determine the dissolved oxygen content in water. It incorporates Pyxis’ advanced technology in the field of fluorescence detection and uses Blue/Red light detection with excitation and reference light sources, offering a wide detection range and very low detection limit. The sensor also integrates temperature and pressure sensors, which can perform temperature and pressure compensation for the measurement of dissolved oxygen based on ambient environmental conditions present in the application of use.

The ST-772 offers a replaceable, front loading DO membrane cap that has been independently developed by Pyxis Lab, with a typical service life of up to two years. This unique DO membrane cap design incorporates a black microporous PTFE membrane material designed to provide extreme scratch resistance, extended life span and simple replacement. The flat front-end design of the ST-772 makes this platform less prone to contamination or fouling. The sensor body is composed of 304 stainless steel or CPVC and is well suited for agressive industrial applications.

The ST-772T (304SS) and ST-772T-P (CPVC) models are offered for inline or bypass flow installations. The ST- 772 series offers both 4-20mA and RS-485 Modbus outputs and is Bluetooth enabled when used in conjunction with the MA-CR Bluetooth adapter.