Emerson Rosemount 3051 Reference Manual page 23

Reference Manual
00809-0100-4007
Procedure
1. Loosen the screw holding the top tag of the transmitter housing. Rotate the label to
2. Confirm device has local Zero and Span buttons by verifying blue retainer under the
3. Apply transmitter pressure.
4. Rerange the transmitter.
Example
• If the transmitter security is on, you cannot adjust the zero and span. Refer to
Configuring transmitter security
• The span is maintained when you set the 4 mA point. The span changes when you set
the 20 mA point. If you set the lower range point to a value that causes the upper range
point to exceed the sensor limit, the transmitter automatically sets the upper range
point to the sensor limit and adjusts the span accordingly.
• Regardless of the range points, the Rosemount 3051 measures and reports all readings
within the digital limits of the sensor. For example, if you set the 4 and 20 mA points to
0 and 10 inH
the 25 inH
2.7.4 Damping
The damping command changes the response time of the transmitter; higher values can
smooth variations in output readings caused by rapid input changes.
CAUTION
Improper assembly
Improper assembly of manifolds to traditional flange can damage sensor module.
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
Reference Manual
expose the Zero and Span buttons.
tag.
a) To change the zero (4 mA point) while maintaining the span, press and hold
the Zero button for at least two seconds; then release.
b) To change the span (20 mA) point while maintaining the zero point, press
and hold the Span button for at least two seconds and then release.
Note
4 and 20 mA points must maintain the minimum span defined in the Specifications
section of the Rosemount
O, and the transmitter detects a pressure of 25 inH
2
O reading and a 250% of range reading.
2
For safe assembly of manifold to traditional flange, bolts must break back plane of
flange web (i.e., bolt hole) but must not contact sensor module housing.
Severe changes in the electrical loop may inhibit HART
ability to reach alarm values. Therefore, Rosemount cannot absolutely warrant or
guarantee that the correct Failure alarm level (High or Low) can be read by the host
system at the time of annunciation.
™
3051 Product Data Sheet.
for security information.
Configuration
August 2019
O, it digitally outputs
2
®
communication or the
23