Coarse Zero Select Jumper Position Selection Procedure - Emerson Rosemount 2151N Reference Manual

Rosemount 2151N
Coarse Zero Select Jumper
Position Selection Procedure
29
The coarse zero select jumper (see Figure 3-2) is shipped
from the factory in either the Nominal position or the position
required to obtain the calibration specified when ordered.
Changes to the factory calibration may require repositioning of
the jumper. To do this, follow the procedure below:
1. Calculate the % zero offset using the following
formula:
% Zero Offset = (LRV/URL) X 100
Where:
LRV = Lower Range Value of desired calibration
URL = Transmitter Upper Range Limit
2. Consult Figures 3-8a or 3-8b to determine typical
jumper position.
3. If the jumper requires re-positioning, remove the
electronics housing cover opposite the "Field
Terminals" label. Remove the jumper by squeezing
the sides and pulling out. Reposition the jumper with
the arrow pointing to the typical position and carefully
push in. Ensure both jumper clips are fully engaged
and return to applicable calibration procedure.
If no change is required, return to applicable calibration
procedure.
NOTE
Typical jumper positions indicated in Figures 3-8a and 3-8b
are approximate. Position jumper as needed to achieve the
desired calibration.
Reference Manual
00809-0000-4851 Rev AD
December 2023
Calibration