2 Safety instructions • The device described is a subcomponent for integration into a system� - The manufacturer of the system is responsible for the safety of the system� - The system manufacturer undertakes to perform a risk assessment and to create a documentation in accordance with legal and normative requirements to be provided to the operator and user of the system�...
3 Functions and features The unit continuously measures the relative water content and the temperature of hydraulics and lubricants� 3.1 Applications The unit is suitable for mineral oils, synthetic esters and bio oils� It covers the following measuring ranges: • Relative humidity: 0���100 % •...
4.1.3 Relative and absolute humidity The relative humidity (φ) is the ratio of the amount of dissolved water actually contained in the oil (ρ ) and the maximum possible amount of the saturation limit (ρ w, max ρ x 100 % φ...
5 Installation 5.1 Typical measuring system 1: Connection of the return pipe 2: Pipe adapter with unit 3: Consumer 4: Pump 5: Connection of the rinse pipe 6: Unit directly screwed into the tank wall...
5.2 Installation location / environment • Install the unit according to the specification (max. 50 bar). • Do not install the unit in the direct vicinity of hot components (e.g. motors) to avoid thermal effects� • The installation position shall be representative for the condition of the oil� •...
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Fig. 1 Fig. 2 1: Wrong installation position 2: Minimum oil level in the tank 3: Connection of the return pipe 4: Connection of the rinse pipe 5: Sensor vertically installed in the bottom 6: Horizontally installed sensor 7: Installation angle...
5.3 Installation procedure ► Ensure that the system is free of pressure during installation� ► Ensure that no media can leak at the mounting location during installation� ► The sealing area on the process connection must be flush and free of unevenness and dirt�...
6 Electrical connection • The unit must be connected by a qualified electrician� • The national and international regulations for the installation of electrical equipment must be adhered to� • Voltage supply to EN50178, SELV, PELV, VDE0100-410/A1� • Use a screened sensor cable� ►...
► In case of returns ensure that the unit is free from soiling, especially of dangerous and toxic substances� For transport only use appropriate packaging to avoid damage of the unit� More information at www�ifm�com...
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