Rosemount 3152, Reference Manual

Page: 38 / 80

Rosemount 3150 Series
Reference Manual
00809-0100-4835 Rev BD
July 2016
3-11
Damping Adjustment
The 3150 Series amplifier boards for transmitter output code options
B (3152) and T (3153 and 3154) 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 3152, 3153,
and 3154 transmitters. Transmitters with the electronics damping
option are calibrated and shipped with the adjustment set at the
counterclockwise stop, 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.
CAUTION
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.