Rosemount 3152, Reference Manual

Page: 36 / 80

Rosemount 3150 Series
Reference Manual
00809-0100-4835 Rev BD
July 2016
3-9
Figure 3-6a – Example for Suppressed
Zero Calibration (English Units) Range 2 with Zero Suppression for a calibration of 20 to 120
inH
2
O (100 inH
2
O span)
1. Calibrate the transmitter to 0 to 100 inH
2
O as described in the Zero
Based Calibration Procedure .
2. Consult Table 3-1 to determine appropriate Course Zero Select
Jumper position. If necessary, reposition jumper using the Coarse
Zero Select Jumper Position Selection Procedure.
For this example:
% Zero Offset = (20 inH
2
O /250 inH
2
O)*100 = 8%
Position the jumper to the NOMINAL position.
3. Apply 20 inH
2
O to the high side process connection, and adjust the
zero until the transmitter output reads 4 mA. Do not use the span
adjustment.
4. Apply 120 inH
2
O to the high side process connection. Verify the
output reads 20 mA. If necessary, adjust the span. Recheck the
zero after any span adjustment.
Figure 3-6b – Example for Suppressed
Zero Calibration (SI Units) Range 2 with Zero Suppression for a calibration of 5,0 to 29,9
kPa (24,9 kPa span)
1. Calibrate the transmitter to 0 to 24,9 kPa as described in the Zero
Based Calibration Procedure .
2. Consult Table 3-1 to determine appropriate Course Zero Select
Jumper position. If necessary, reposition jumper using the Coarse
Zero Select Jumper Position Selection Procedure.
For this example:
% Zero Offset = (5,0 kPa /62, 2 kPa)*100 = 8%
Position the jumper to the NOMINAL position.
3. Apply 5,0 kPa to the high side process connection, and adjust the
zero until the transmitter output reads 4 mA. Do not use the span
adjustment.
4. Apply 29,9 kPa to the high side process connection. Verify the
output reads 20 mA. If necessary, adjust the span. Recheck the
zero after any span adjustment.