Emerson Rosemount 3051, Справочное руководство, Страница: 67 / 222

57
Reference Manual
00809-0100-4001, Rev JA
Section 3: Configuration
November 2012
Configuration
Figure 3-11. Zero and span buttons
Note
The span is maintained when the 4 mA point (1 Vdc point) is set. The span changes when the
20 mA point (5 Vdc point) is set. If the lower range point is set to a value that causes the upper
range point to exceed the sensor limit, the upper range point is automatically set to the sensor
limit, and the span is adjusted accordingly.
3.9.4 Damping
The “Damp” command introduces a delay in the micro-processing which increases the response
time of the transmitter; smoothing variations in output readings caused by rapid input changes.
Determine the appropriate damping setting based on the necessary response time, signal
stability, and other requirements of the loop dynamics within your system. The default damping
value is 0.4 seconds and it can be set to any of ten pre-configured damping values between 0
and 25.6 seconds. See list below.
The current damping value can be determined by executing the Field Communicator fast keys
or going to “Configure” in AMS Device Manager.

0.00 seconds

0.05 seconds

0.10 seconds

0.20 seconds

0.40 seconds

0.80 seconds

1.60 seconds

3.20 seconds

6.40 seconds

12.8 seconds

25.6 seconds
Span and Zero Adjustment Buttons