AST-33D Diving Oxygen Sensor – Replacement to Teledyne R33D

AST-33D diving oxygen sensor replaces Teledyne Class R-33S, R-33D, Analytical Industries PSR-11-37-D7, Analox 9212-0, NuvAir UBS O2 Stick and IT-G D-03. AST-33D diving oxygen sensor has a flat front end. This oxygen sensor uses a proprietary electrolyte formulation and super activated anode that ensures full utilization of Pb anode. The combination of proprietary electrolyte and super activated anode provides much longer operating life without significant signal drift thus minimizing periodic calibration requirement. AST brand sensors are designed, developed and manufactured in the USA.