Oxygen sensor FCX-TR0005

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Product type Gas sensor transmitter Device type Stationary Technology Zirconia Output signal 4-20 mA Supplier Pewatron Measuring range 0-5 % Gasflow Flow by diffusion Approvals No Features Zirconia, long lifetime, integrated transmitter Product description Also available with measurement ranges 0...1000 ppm, 0...25% or 0.1...95% Pewatron Application Note PAN-02: Zirconia oxygen gas sensor; From nom uo to 95% measurement range The FCX zirconia oxygen sensor series comes with 4 different measurement ranges; 0...1000ppm, 0...5%, 0...25% and 0...95% (extendable to 98%). The construction of the individual sensors with respect to the measurement range have been done to meet requirements such as high accuracy, superior signal stability/repeatability, fast response time and long operational lifetime of the sensor. The sensor output signal is in the pA range and it follows a logarithmic curve with increasing oxygen concentration. Zirconium oxide (with proper dopant elements) when heated > 350 °C is penetrable for oxygen ions The FCX oxygen series has the working point at 450°C. The heating element and the oxygen sensing element are bonded together ensuring a perfect thermal match and minimum power usage within the working point.A voltage applied to the oxygen-sensing element, pumps the oxygen out of a closed inner chamber (Figure below). At a constant gas pressure, the quantity of oxygen pumped out is equal to the quantity of oxygen molecules diffusing in through a small capillary hole.