Exhaust Gas Measurement Sensor High Temperature Oxygen Sensor

Exhaust Gas Measurement Sensor High Temperature Oxygen Sensor    When voltage is applied to a zirconia electrolyte cell, oxygen is pumped through the zirconia disc from the cathode side to the anode side because the carriers of the current flowing through the zirconia electrolyte are oxygen ions. By attaching a cap with a pinhole on the cathode side of
the cell and by increasing the voltage over the cell the current shows saturation due to the rate limiting step in the transfer of oxygen to the cathode. This saturation current is called limiting current and is nearly proportional to the ambient oxygen concentration.

Below the advantages of Exhaust Gas Measurement Sensor: measuring range 10 ppm to 96% oxygen High accuracy For many types a more or less linear characteristic Small temperature dependence of the sensor signal Low interference with other gases Long service life In many cases “Single point calibration“ necessary only once     Exhaust Gas Measurement Sensor APPLICATION: Medical Oxygen Concentrators Incubators Laboratory Inert  gas  processing  cabinets (Glove boxes) Incubators  (controlled  bacterial growth) Food industry Packaging Controlled food testing Monitoring fruit ripening processes (storage / transport) Household/Gastronomy High-temperature  humidity measurements (> 100 ° C) for baking / roast automation Measuring technique Oxygen  Meters  (stationary  / portable) Measurements under controlled O 2 content Air conditioning and ventilation Security technology/Monitoring Fire  protection  (increased  N 2 atmosphere e.g. Server rooms) Greenhouses, wine cellar Gas storage, refineries Diving Fermentation units (Electrical-) industry Inert gas processing machines and cabinets Inert gas welding monitoring Storage  with  increased  N2 atmosphere (oxidation prevention) Drying units Nitrogen concentrators Exhaust gas measurement Exhaust Gas Measurement Sensor product details:     Exhaust Gas Measurement Sensor FAQ
Q1:What oxygen concentrations can be measured with the sensor? Sensors with different measurement ranges can measure oxygen concentrations from 10 ppm to 96% oxygen.    Q2:Is it also possible to measure dissolved oxygen in liquid mediums?
No, the oxygen sensor measures only the oxygen concentration in gaseous atmospheres.
Q3:How does the oxygen sensor work?
Basically there are two operational modes of the sensor. According to the environmental circumstances the sensor is operating with constant voltage or a constant resistor.
At relatively low ambient temperature deviations the sensor can be heated applying a constant voltage. The necessary heating voltage depends on the sensor’s packages and is specified in the sensor’s manual. At higher temperature deviations the sensor should be used in the constant resistor mode. In this case the sensor is regulated on a constant heating resistor and thus on a constant sensor temperature. In both modes you should consider that the sensor should be heated over a minimum time of 90 seconds to be ready for use. There are instructions in the sensor’s manual. Additionally to the heating of the sensor a second voltage for the sensor is necessary. This depends on the sensor type 0.7 – 1.6 volts.
Q4:What’s the sensor’s output signal?
As the oxygen sensor is operating through an amperometric measurement principle, results after applying the sensor’s voltage electricity in a range between 0 – 420 μA depending on the sensor’s measurement range and the existing oxygen concentrations.
Q5:Is it necessary to calibrate the sensor?
Before using the sensor it is necessary to calibrate it once at known gases. Using this measurement you’re able to define a constant with which all following measurements of measured oxygen concentrations out of the sensor electricity can be calculated.
In case of a sensor, with a measurement range exceeding 21% oxygen, concentration ambient air (20.9% oxygen
concentration) can be used for calibration.