FCX-MC25-CH: Oxygen sensor module with fast response time

Pewatron has introduced a new oxygen sensor module for demanding applications where changes in oxygen concentration must be measured with a fast response time. At the heart of the sensor module is the oxygen sensor developed by Fujikura. This amperometric solid-state sensor (zirconia) offers high measurement accuracy, fast response time to changes in gas concentration, and high resistance to pressure changes, humidity, and other gases. The unamplified logarithmic signal from the oxygen sensor is in the microamp range. The FCX-MC25-CH sensor module is a signal conditioning unit that amplifies the output current of the sensor and provides an analog, low-noise, linearized output current (4 to 20 mA). Thanks to its low total power consumption (< 3 W), the FCX-MC25-CH oxygen sensor module is suitable for mobile applications.
Fast sensor response time is typically required in applications where only a few sample extracts are available for analysis or where a large number of sample extracts need to be tested/analyzed. In both cases, knowledge of the response time (T90) is important to correctly assess the process and product quality.
Selective laser melting is a good example of an application where the response time of the oxygen sensor is important when measuring changes in oxygen concentration. When metal powder is used to create a 3D model in the laser sintering process, slight variations in oxygen concentration can cause significant structural changes due to undesirable selective oxidation of the metal layers.