Monitoring the operating pressure in the various sections of a hydraulic circuit is essential to ensure the required level of available power. In lubrication systems, the surveillance of the pressure is an indication of equal feed of lubricant to the different point of use. Traditionally, pressure switches which need to be located remote from the measuring port are connected by pipes or hoses, thus increasing the demand of installation work and the risk of leakages. The Bühler technology features flexible cables instead of pipes and hoses with the benefit of much lower cost and less troubles.