The OxyTrans transmitter is an easy to use, accurate and economical way to measure oxygen at trace and percent levels in gases that is ATEX certified II 1/2 G Ex ia IIC T4. It is a 4 to 20 mA, two wire, oxygen concentration transmitter with simple display and one point calibration that allows quick startup. The OxyTrans uses a special fuel cell to measure the oxygen concentration. The sensor meets industrial requirements for accuracy, sensitivity and operating life. The measuring cell is modular and made of stainless steel. A defective measuring cell can be repaired by replacing the defective part only, rather than the complete unit.