SRX-CT21A % Oxygen Sensor

Advanced Sensor Technology

SRX-CT21A % Oxygen Sensor replaces Teledyne R-21A sensor. This fast response sensor is designed specifically for measuring oxygen in automotive exhaust. 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.

AST Model SRX-CT21A Replaces

  • Teledyne R-21A
  • Analytical Industries Inc. PSR-11-917M

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