Water in hydraulics or lubricants can damage or even destroy a machine. To prevent this, ifm electronic has introduced a means to measure water concentration. The combined oil humidity and temperature sensor, LDH100, measures the relative humidity of mineral oils, synthetic esters and bio oils – simultaneously it also measures the temperature.
The sensor determines the relative humidity in the oil in the range of 0-100% by means of a capacitive measuring element. At 0% the oil is absolutely without any water content. At 100%, however, the medium is completely saturated. No more water is dissolved and is then present as free water. The measured values of the temperature and the relative humidity are provided via two 4-20 mA analog outputs. The sensor is designed for a temperature range of -20 to 100°C.
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