Emerson Rosemount 3051 Reference Manual page 87

Reference Manual
00809-0100-4007
Sample calculation for Rosemount
accuracy and 5-year stability)
The following is an example of how to calculate calibration frequency.
Procedure
1. Determine the performance required for your application.
2. Determine the operating conditions.
3. Calculate total probable error (TPE).
4. Calculate the stability per month.
5. Calculate calibration frequency.
5.4.3 Compensating for span line pressure effects (range 4
and 5)
Rosemount
procedure when used in differential pressure applications. The purpose of this procedure is
Reference Manual
Required Performance:
Transmitter
Calibrated span
Ambient temperature change
Line pressure
TPE =
span
Where:
Reference Accuracy =
Ambient Temperature Effect =
Span Static Pressure Effect
(1) Zero static pressure effect removed by zero trimming at line pressure.
™
3051 Range 4 and 5 Pressure Transmitters require a special calibration
™
3051 (0.04 percent
0.20% of span
Rosemount 3051CD, Range 2 [URL=250 inH
(623 mbar)]
150 inH O (374 mbar)
2
± 50 °F (28 °C)
500 psig (34,5 bar)
± 0.04% of span
(1)
=
Operation and maintenance
August 2019
O
2
= 0.105% of
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