Emerson Rosemount 2151N Reference Manual page 39

Reference Manual
00809-0000-4851 Rev AD
December 2023
Figure 3-7 – Coarse Zero Select
Jumper Adjustment Example
Figure 3-7a – Example for Coarse Zero Select
Jumper Adjustment (English Units)
Figure 3-7b – Example for Coarse Zero Select
Jumper Adjustment (SI Units)
Figure 3-8 – Coarse Zero Select
Jumper Position (Typical)
Figure 3-8a – Range 1 Jumper Position
(Typical)
% Zero Offset values and jumper positions indicated are approximations.
Select jumper position as needed to achieve the desired calibration.
Calibration
Figure 3-7 contains an example of determining the typical
position of the coarse zero select jumper. Figure 3-7a uses
English Units (inH O) while Figure 3-7b uses SI Units (kPa).
2
Range 2 for a calibration of -175 to -125 inH
LRV = -175 inH
% Zero Offset = (-175 inH
Per Figure 3-8b, the typical jumper position is MAX ZE.
Range 2 for a calibration of –43,6 to –31,1 kPa
LRV = -43,6 kPa
% Zero Offset = (-43,6 kPa /62,2 kPa)*100 = -70%
Per Figure 3-8b, the typical jumper position is MAX ZE.
NOTE
If you remove either cover during the above procedures, follow
the instructions in Section 5: Maintenance and
Troubleshooting to reinstall the cover.
Rosemount 2151N
O
2
O /250 inH O)*100 = -70%
2 2
O
2
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