AST Model SRX-CT21 .... % Oxygen Sensor AII PSR-11-917 This is rectanglular OMS analzer

This is rectanglular OMS analzer with a matted

Temperature Range 0-50c (32-122F)

The Expedition-X can easily be panel mounted for use with mixing stations

sensor caps

This sensor has been replaced with the AST-45D

AST Model SRX-CT21 .... % Oxygen Sensor AII PSR-11-917 This is rectanglular OMS analzerREPLACEMENT SENSOR FOR . Teledyne B1, B1C Analytical Industries Inc. PSR 11 21, PSR 11 213 AMI P1 SRX CT21 % O2 sensor as replacement for Teledyne B1, B1C and Analytical Industries PSR 11 21, PSR 11 213 % O2 sensor. Its proprietary electrolyte formulation ensures full utilization of Pb anode, thus providing longer life without signal drift and minimizing periodic calibration requirement. Sensor is designed, developed and manufactured in the USA.