Looking at the color display of the RIA452, one assumes that the instrument is more than just a plain display. The unit not only alternates the switching of pumps, it also reacts to faults which are supplied over digital inputs. Its intrinsically safe input (optional) extends the scope of application substantially. When used in flow measurement with orifice plates or in open channels, the unit integrates the flown value, totalizes it and supplies volume proportional pulses over its digital output.