As soon as the HUMIDITY SENSOR STANDARD is set up, it starts measuring the level of oil saturation with water on a continuous basis. The moisture value obtained is processed on the special DATALOGGER display unit. The concentration of water (in %) is calculated in the range from 0% (no water detected) to 100% (complete saturation/existence of free water).
In contrast to the need to determine the saturation limit of different types of oil (e.g. a comparatively low water absorption capacity of mineral oils or, on the contrary, a relatively high water capacity of ester oils), the sensor technology does not require this value for assessing the water concentration in oil.
With regard to unsaturated ester oils, the use of the HUMIDITY SENSOR is essential. Because measurement methods with portable test devices require the use of a reagent, they are not suitable for unsaturated ester oils due to the reaction that occurs.
When measuring the relative humidity, the actual temperature of the oil influences the dissolution capacity. For example, warm oil can absorb more water than cold oil. Therefore, the relative humidity of the oil increases if no more water is added. On the other hand, hot, relatively dry oil can suddenly contain free water when the ambient temperature drops.
Regardless of the oil type and temperature, the HUMIDITY SENSOR STANDARD provides an accurate real-time measurement of the moisture value and provides immediate information as to whether the parameter is within normal ranges or not.
Due to its immersion depth of only 29 mm, the sensor is ideal for small pipe diameters.
