G4 Multi Channel Weighing Instrument. PM/DT/HE Technical Manual

G4 Multi Channel Weighing InstrumentSetting of flow rate unitParameter ‘Flow Rate Unit’ defines the engineering unit that should be used forthe flow rate value and for related set-up parameters.If the flow rate unit exceeds 4 characters then it will be represented as ”/s”, ”/min”,”/h”,”*/mi” or ”*/h” in the set-up menus.In the case of ”Unit*1000/m” or ”Unit*1000/h” then some flow rate units will bepreceded by a ”k”.Other flow rate units will be converted, according to the table below.Measurement unit Flow rate unit * 1000kgkNkPaMPalkgfkN/mmV/VtMNMpaGPam3MgfMN/mV/VSetting of flow rate derivation timeTo enable the instrument to make a correct measurement of flow rates, a derivationtime must be selected in accordance with the desired accuracy.If ‘Auto Derivation Time’ is set to ‘On’ then the instrument will calculate aderivation time based on the current calibration (including update rate),the ‘Flow Rate Resolution’ and the ‘Flow Rate Unit’. The instrument tries to calculate aderivation time that will give a stable and accurate flow rate valueat the current settings (provided that the flow is stable).A longer filter time and/or a more coarse ‘Flow Rate Resolution’ will give shorterderivation times. The automatically calculated derivation is limited to its defined max.and min. values.If ‘Auto Derivation Time’ is set to ‘Off’, then the ‘Derivation Time’ must be enteredmanually. The instrument will accept any derivation time (within its min. and max. limits)and it is up to the user to select a suitable derivation time for the application.When the scale update rate or the derivation time is changed the derivation timeis adjusted, by the instrument, to the nearest possible value depending onthe update rate.5-15