Advanced PSR-11-75-KE galvanic type % oxygen sensor with excellent stability and accuracy under stringent applications. All respiratory oxygen sensors are subjected to the most extensive stability test, output in air, 30" of water column pressure test and stability at 100% oxygen. The widest range of % respiratory oxygen sensors offered by Analytical Industries, Inc. Note: The graphic of this sensor is an example only and sensor cap/body colour may vary depending upon gas sensor type ordered or manufacturing modification.