Oksygenmålere

Oksygenmålere, also known as oxygen sensors, are devices used to measure the amount of oxygen in a given environment. These instruments are crucial in a variety of applications, ranging from industrial processes to medical diagnostics and environmental monitoring. The fundamental principle behind most oxygen sensors involves a chemical reaction or an electrochemical process that produces a measurable electrical signal proportional to the oxygen concentration.

One common type is the zirconium dioxide sensor, frequently employed in automotive exhaust systems to optimize fuel combustion. These sensors operate at high temperatures and generate a voltage based on the difference in oxygen partial pressure between the exhaust gas and the ambient air. Another prevalent type is the electrochemical oxygen sensor, which utilizes an electrolyte and electrodes to facilitate the reduction of oxygen. This process generates a current that is directly related to the oxygen level. These are often found in portable gas detectors and medical equipment like ventilators.

Other less common but important types include paramagnetic oxygen analyzers, which exploit the paramagnetic properties of oxygen, and optical oxygen sensors that use luminescence quenching. The choice of oxygen sensor depends on factors such as the required accuracy, operating temperature range, response time, and the specific application. Regular calibration is essential to ensure the accuracy and reliability of oxygen measurements.