Emerson Rosemount 3152, Reference Manual

Page: 43 / 84

Reference Manual
00809-0100-4835 Rev BE
February 2018
Rosemount 3150 Series
Calibration 34
Figure 3-7 contains an example of determining the typical
position of the coarse zero select jumper. Figure 3-7a uses
English Units (inH
2
O) while Figure 3-7b uses SI Units (kPa).
Figure 3-7 – Coarse Zero Select
Jumper Adjustment Example
Figure 3-7a – Example for Coarse Zero Select
Jumper Adjustment (English Units)
Range 2 for a calibration of -175 to -125 inH
2
O
LRV = -175 inH
2
O
% Zero Offset = (-175 inH
2
O /250 inH
2
O)*100 = -70%
Per
Figure 3-8b , the typical jumper position is MAX ZE.
Figure 3-7b – Example for Coarse Zero Select
Jumper Adjustment (SI Units)
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.
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.