Damping Adjustment - Emerson Rosemount 2151N Reference Manual

Reference Manual
00809-0000-4851 Rev AD
December 2023
Figure 3-8b – Ranges 2-6 Jumper Position
(Typical)
% Zero Offset values and jumper positions indicated are approximations.
Select jumper position as needed to achieve the desired calibration.

Damping Adjustment

31
The 2151N amplifier boards with Adjustable
Damping are designed to permit damping of
rapid pulsations in the pressure source through
adjustment of the single turn damping
adjustment potentiometer (see Figure 3-2).
When adjusted to the maximum position
(clockwise stop), time-constant values of at least
1.20 seconds are available for 2151N
transmitters. Transmitters with the electronics
damping option are calibrated and shipped with
the adjustment set at the counterclockwise stop
(unless a customer specifies time response
setting), giving the minimum time constant.
Damping adjustment should be made with the
transmitter calibrated to the intended application
calibration. To adjust the damping, turn the
damping adjustment potentiometer until the
desired time constant is obtained. It is best to set
the damping to the shortest possible time
constant. Since transmitter calibration is not
affected by the damping setting, damping may
be adjusted with the transmitter installed on the
process.
The damping adjustment potentiometer has positive stops at
both ends. Forcing the potentiometer beyond the stops may
cause permanent damage and require electronics assembly
replacement.
NOTE
If you remove either electronics housing cover during the
above procedures, follow the instructions in Section 5:
Maintenance and Troubleshooting to reinstall the cover.
Rosemount 2151N
CAUTION
Calibration