Connecting piece for fluid-conducting line systems

A connection socket for fluid-conducting line systems, the connection socket comprising:

• a fluid channel extending along a fluid channel axis, wherein the fluid channel is configured to be connected to guide channels of the line system on at least a first connection end and a second connection end of the connection socket, wherein a measurement section is formed between the first connection end and the second connection end, in which a sensor system is arranged for pressure measurement of a medium flowing through the fluid channel, wherein the sensor system features a connection interface configured to be connected to a control unit for pressure measurement in the fluid channel, wherein the sensor system for pressure measurement including at least two strain measurement sensors which are arranged on the circumference around the fluid channel axis offset to one another on an outer wall of the measurement section, wherein the strain measurement sensors are formed as strain gauges each with at least one strain measurement sensor element and wherein the strain measurement sensors are each arranged in a measurement groove formed in the outer wall of the measurement section and running parallel to the fluid channel axis.