toscano T-500, Руководство пользователя

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Page 15
ITM-MAGMETER-T500-ED2
E. Damping
Adverse effect of sudden changes of fl ow rate or laminar fl ow disturbances in measuring section of the instru-
ment (e.g. due to fi ttings, bends or pumps) sensed by the instrument and causing sudden changes of displayed
values or oscillations of current output can be eliminated by setting of instrument damping.
Use cursor keys to select the option DAMPING from main menu and confi rm your selection by EXE key.
1.
A submenu will be displayed.
Select option TIME and confi rm your selection by EXE key.
2.
Select time constant from submenu and confi rm it by EXE key. Generally, the longer the time constant is,
3.
the more stable is the value on display and on outputs; however the slower is response to fl ow changes,
i.e. with time constant of 5 s, the instrument responds to immediate drop of fl ow and displays zero fl ow
rate only after 5 seconds.
Select option MODE and confi rm by EXE key. Select LINEAR if damping is to be linear or AVERAGE if it
4.
should be calculated from several samples depending on selected time constant. Confi rm your selection
by EXE key.
In option ZONE select command EDIT and press EXE key to enable editing of bandwidth above and under
5.
steady fl ow mean value in which damping should occur. Use cursor keys to set numeric value in l/s and
confi rm it by EXE key.
Select option RETURN to fi nish setting.
6.
The instrument will ask if you want to save new parameters SAVE SETUP?. Select YES if they are OK. The
fl ow meter will save new parameters and switch to normal display mode. If NO is selected, parameters will not
be saved.
The instrument will switch to display mode and works with new parameters until it is switched off. When the
instrument is switched on again, it works with original parameters.