Zirconia Oxygen Analyzer Probe Aging Causes and Symptoms The cause and symptom of aging of zirconia oxygen analyzer probe, aging of probe refers to the aging of zirconia oxygen measuring battery, mainly showing two parameters: internal resistance increase and background potential increase. (I) increased internal resistance In actual use, it is common to increase the internal resistance to cause the probe to age. The internal resistance refers to the input resistance between the two ends of the signal line, which is the sum of the lead resistance, the interface resistance between the electrode and the zirconia, and the volume resistance of the zirconia. Therefore, the electrode volatilization, the electrode detachment, and the anti-stability of the zirconia electrolyte are Stabilized zirconium oxide becomes unstable zirconia), which will cause an increase in internal resistance. Measuring the internal resistance of the probe can judge its aging. According to the experience, when the internal resistance increases to near the limit of its use, there will be a large jitter of the signal, and some probes will also have a slow response. For these probes, the background potential is not necessarily large. (2) The background potential is increased The background potential is the additional potential of the battery. There are two types of factors that cause the background potential to increase: a permanent factor, which is parasitic on the battery, such as the corrosive action of SO 2 and SO 3 , battery asymmetry, etc.; the other is a temporary factor, such as electrode ash Factors such as air convection difference, once the conditions improve, the background potential can be reduced. The background potential increases during the use of the probe, which often reflects the aging of the probe. When the Eo value exceeds the maximum adjustment of the instrument, the probe is damaged. For example, a zirconium oxide probe, the factory is about Eo - 5mV, which ring is the allowable variation range 0 ~ - 30mV, 13mV after using a half turns, 18 months after use becomes a 29mV, this described case, the probe Already aging and needs to be replaced. It should be noted here that the aging of some probes is reflected in the fact that the background potential becomes larger, and the aging of some probes is not reflected at this point. When the cause of the background potential becomes larger due to the temporary storage factor, the probe is used. Continuation of time, there may be cases where the background potential becomes larger and smaller. Since the background potential increases, the number of probe aging is less than the increase in internal resistance. If only the background potential increases Large, the signal will not appear big beating. New Energy Cast Film Line,Solar Energy Cast Film Machine,Photovoltaic Cast Film Machine,Plastic Film Perforation Machine Baijia Mechanical Equipment (Huizhou) Co., Ltd. , https://www.castfilmmachine.com