A permittivity sensor’s combined reading provides a sensitivity greater than 60 times that of a standard dielectric sensor, giving you very early warning of changes within your oil. The sensitivity detects oil oxidation, water, glycol, fuel and dirt, TAN & TBN, viscosity, wear particles, soot and oil and temperature. It gives you total insight into your oil’s condition.
As oil quality degrades the number of polar molecules in it increases. The OilAlert sensor measures how much energy is needed to pass an AC current through a small quantity of oil. The energy required increases in proportion to the number of polar molecules. Because every lubricant is different, the OilAlert sensor is precisely calibrated to the specific oils. This allows it to accurately measure the oil’s condition and predict the life it has left. Only permittivity sensors can provide you with the protection you need.
Oil quality will typically degrade according to a predictable service interval. However, past this point it starts to degrade exponentially. Its ability to lubricate, cool and seal is lost. This is normally signalled by rapid increases in the oil’s TAN (Total Acid Number), depletion of the TBN (Total Base Number) and subsequent viscosity degradation.
By the time this change is detected, your equipment is already is danger. The oil has already stopped providing effective lubrication. This is the level of detection offered by dielectric sensors.
Permittivity sensors like the OilAlert sensor provide a far more comprehensive assessment of your oil. By taking numerous other factors into account, they raise the alarm before oil loses its ability to lubricate. These factors include: