Bass Instruments, DFSS series Piston Metal Tube Flowmeters are heavy-duty flow meters designed to measure liquid and gaseous fluids. The indicator portion is not physically linked to the measuring tube. Thus, even if your fluid is not transparent, a clear reading on the display is provided. Our product which is not affected by the mounting position can be connected to the pipes horizontally or vertically. The SPDT contact output option is available to determine the limit values. DFSS series Piston Metal Tube Flowmeters with connection threads and small dimensions can be connected to the plant in a very short time.