16
Reference Manual
00809-0100-4108, Rev CA
Configuration
March 2017
Configuration
Figure 2-11. Analog Zero and Span Buttons
A. Zero and span buttons
Note
If the transmitter security is on, adjustments to the zero and span will not be able to be
made. Refer to “Configuring transmitter security” on page 43 for security information.
The span is maintained when the 4 mA/1 V point is set. The span changes when the 20mA
5 V 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.
Regardless of the range points, the transmitter measure and report all readings within the
digital limits of the sensor. For example, if the 4 and 20 mA(1–5 Vdc) points are set to
0and10inH
2
O, and the transmitter detects a pressure of 25 inH
2
O, it digitally outputs
the 25 inH
2
O reading and a 250% of range reading.
2.8.3 Damping
The damping command changes the response time of the transmitter; higher values can
smooth 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 damping command
utilizes floating point configuration allowing the user to input any damping value within
0.0–60.0 seconds.
Damping with a Field Communicator
Enter desired Damping Value and select APPLY.
From the HOME screen, enter the Fast Key sequence
Device Dashboard Fast Keys
2, 2, 1, 1, 5
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