247.4 Access to “Installation”To enter to “Installation” window, press the corresponding tab.Changing the parameters of this window, the functions of the equipment that affect themeasurement can be programmed. Once the changes have been made, press the "Send"button to save all data into the device memory.7.4.1 SensorIn the Sensor section, the Gain factor, the nominal diameter (DN) and the flow direction can beconfigured.The Gain factor is composed of an integer and three decimals.It must match the Fg parameter on the device label.DN is the inner diameter of the sensor. It is also printed on the device label.The flow rate has a positive sign when going from left to right, looking at the front flowmeter,and negative in the opposite direction. To change that sign, activate the Inverted flowcheckbox .7.4.2 Power supplyIn this section the mains frequency of the country where the instrument is installed should beselected.