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Troubleshooting
10.3 Test Facilities Graph Screen
FUE1010 IP65 NEMA 4X
Operating Instructions, 12/2014, A5E03086491-AC
157
1.
Press the <1> key while viewing the Test Facilities Graph Screen as shown above. The
damping control [MinDamp #] will appear on the command line at the lower left-hand
corner of the screen.
Note
The number listed to the right of the command code on the screen represents the
exponent in the exponential averaging routine (digital damping), where the larger the
number represents the greater the digital averaging. Setting this exponent higher than 7
is generally not recommended.
2.
Pressing the <+> key will increase the MinDamp Factor by one unit for each key press.
To exit this mode, press the <0> key on the keypad.
①
Increased Damping Factor
Figure 10-2 Setting the MinDamp Factor
The above example shows that increasing the Digital Damping reduces asynchronous noise.
To DECREASE the Digital Damping:
Setting the Digital Damping factor to a value LOWER than the default value of 4 may be
justified in cases where pulsating flow is present (such as from a reciprocating pump) or for
the purpose of diagnosing transient signal behavior. A pulsating flow condition that
generates more than +/- 45 degrees of phase jitter will generally cause signal correlation
problems when any digital averaging is used. In this case it may be necessary to completely
eliminate the digital averaging by reducing the Digital Damping Factor to 0.
1.
Press the <2> key while viewing the Test Facilities Graph Screen. The damping control
[MaxDamp #] will appear on the command line at the lower left-hand corner of the screen.
2.
Pressing the <-> key will decrease the MaxDamp Factor by one unit for each key press.
To exit this mode, press the <0> key on the keypad.
Содержание SITRANS 7ME3500
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