5-135-5-1. Changing setting of damping time constantDamping means a response time of the primary time lag (63.2% response) for a step responseof the flow rate. If the out fluctuations are large, increase the damping. A large damping valuestabilizes the output but lowers the response performance. We suggest setting the damping tothe largest value the system can accept.ElectromagneticflowmeterInput of step response Output of response63.2%Damping (s)MTGFig. 5-1. Damping output characteristicsSet the damping time constant in accordance with the following procedure:Step Procedure Screen1 The screen at right is a screen display example inMEASURING MODE (measurement state). Press theMODE key.20.0 %01.94 m3 /hWP0 000694012 The OPERATOR'S MODE screen appears for approx.two seconds and then the damping setting screenappears.20.0 %* OPERATOR'SMODE20.0 %* DAMPING005.0 s3 Press the key until the cursor is at the value to bechanged. In this example, the key is pressed threetimes to move to the position “5.”20.0 %* DAMPING005.0 s4 Press the or key to display a time constant to bechanged. In this example, the key is pressed fivetimes to change the damping time from 5 seconds to10 seconds.20.0 %* DAMPING005.0 s5 Press the key until the cursor is back at the modeindicator.Press the MODE key to return to the MEASURINGMODE and save data.20.0 %* DAMPING005.0 sCAUTIONYou have only ten minutes to return to MEASURING MODE to save the new value beforethe system resets it to the previously saved value.
