The MASS-STREAM series D-6300 is suitable for flow ranges from 0,01-0,2 ln/min up to 100-5000 ln/min (Air). The instruments operate on the through-flow measurement principle, following the constant temperature anemometer principle, they have IP65 protection as a standard and are operated with a digital pc-board with all functions for accurate flow measurement and control. The instruments can be supplied with commonly used digital or analog input/output signals. Along with the standard RS232, Profibus-DP, DeviceNet, Flow-Bus and Modbus-RTU are available as an option. One key element and innovative improvement is the optionally integrated, modern, multi-functional and multi-colour display, fully IP65 compliant with operator buttons on the instrument. With its multiple functions, such as actual flow indication, totalisation and alarms, the new MASS-STREAM series D-6300 offers an excellent price-performance ratio.