A device for measurement of entrained and dissolved gas has a first module arranged in relation to a process line for providing a first signal containing information about a sensed entrained airgas in a fluid or process mixture flowing in the process line at a process line pressure. A server enables generation of a graphical user interface at a plurality of locations over an open network. The movement mechanism is designed for transferring the leg unit from the storage position into the use position. The cells in a first pair of columns are arranged to be shifted in the extending direction of the BLs by a half-pitch from the cells in a second pair of columns.