Emerson Rosemount 2051 Wireless Series, Reference Manual, Page: 179 / 250

56
Reference Manual
00809-0100-4100, Rev AA
Section 5: Operation and Maintenance
June 2012
Operation and Maintenance
LT = LRV + S x (LRV) x P
HT = URV + S x (URV) x P
In this example:
To calculate the low trim (LT) value:
To calculate the high trim (HT) value:
Complete a 3051 Wireless sensor trim and enter the corrected values for low trim (LT) and high
trim (HT), refer to
“Sensor Trim” on page 53 .
Enter the corrected input values for low trim and high trim through the Field Communicator
keypad after you apply the nominal value of pressure as the transmitter input.
Note
After sensor trimming 3051 Wireless Range 4 and 5 transmitters for high differential pressure
applications, verify that the Lower and Upper Operating points are at nominal values using the
Field Communicator.
Where: LT = Corrected Low Trim Value
LRV = Lower Range Value
S = –(Span shift per specification)
P = Static Line Pressure
Where: HT = Corrected High Trim Value
URV = Upper Range Value
S = –(Span shift per specification)
P = Static Line Pressure
URV = 1500 inH
2
O (3.74 bar)
LRV = 500 inH
2
O (1.25 bar)
P = 1200 psi (82.74 bar)
S = ± 0.01/1000
LT = 500 + (0.01/1000)(500)(1200)
LT = 506 inH
2
O (1.26 bar)
HT = 1500 + (0.01/1000)(1500)(1200)
HT = 1518 inH
2
O (3.78 bar)