4-20 mA Loop Powered Two Wire Oxygen Transmitter measure Oxygen at trace and % levels. A simple display and one point calibration allows for a quick start of the instrument. The unit will offer ranges between 0-100ppm, 0-1,000ppm, 0-10,000ppm of oxygen. 0-1% to 0-25% O2. The OxyTrans uses a special fuel cell to measure the oxygen concentration. The sensor meets the industrial requirements for accuracy, sensitivity, easy to use and operating life.