WIKA

Filter systems

The usage of filters is as diverse as the requirements for their monitoring. The filter of a ventilation system, whose contamination produces a differential pressure of a few millibars, requires different instrumentation than a cartridge filter for oil hydraulics.

All have the requirement for reliability in common, which is also, or especially, true for the measurement technology. Only the reliable measuring signal of a WIKA process transmitter, differential pressure transmitter or pressure gauge enables efficient and trouble-free operation of the system. Your advantage: The energy consumption is optimised and thus also operating costs and environmental compatibility.

Hydraulic filter application (figure above)

Particles in hydraulic oil lead to a markedly higher wear of all moving parts, such as hydraulic pumps and motors, valve pistons or in the cylinder. Therefore, one or more filters in the circuit are among the most important components. Installation is often in the return line to the tank, where the pressure level is low and the discharge is made against atmospheric pressure. Here a gauge pressure transmitter monitors the filter contamination. If one wants to protect specific components such as the hydraulic motor, then the filter must be fitted in front of these components. For the monitoring of these, one requires differential pressure measurement – measurement of the pressure drop (the contamination) across the filter.

Machine tool application (figure below)

With the machining of a metal part in a machining centre, chips are produced. This is transported by the cooling lubricant in the machine tool to a conveying system which then transfers it from the processing area.

Filter systems × 1

Verschmutzung des Filters - Druck

Verschmutzung des Filters - Druck
2

Verschmutzung des Filters - Füllstand

Verschmutzung des Filters - Füllstand
Filter systems
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The chip separator separates the solid chips and the liquid cooling lubricant so that it can be returned to the circuit. The chips are sent for recycling and should also be as “clean” as possible. A problem is frequently the float switch in the chip separator of the belt filter, which controls the further transport on the belt filter. The chips accrued are held on this and can no longer be washed away. This leads to an overflow of the cooling lubricant, with corresponding effort in the cleaning of the hall – and also the risk of accidents due to the slippery floor. Our manufacturing depth enables us to develop solutions and test them in our own pre-manufacturing. We understand what reliability means.

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