Determine Calibration Frequency - Emerson Rosemount 2051 Reference Manual

Operation and maintenance
February 2024
5.4

Determine calibration frequency

Calibration frequency can vary greatly depending on the application, performance
requirements, and process conditions. See
Calibration Intervals Technical
To determine the calibration frequency that meets the needs of your application:
Procedure
1. Determine the performance required for your application.
2. Determine the operating conditions.
3. Calculate the Total Probable Error (TPE).
4. Calculate the stability per month.
5. Calculate the calibration frequency.
5.4.1 Determine calibration frequency for Rosemount 2051
(example)
Procedure
1. Determine the performance required for your application.
2. Determine the operating conditions.
3. Calculate total probable error (TPE).
84
Note.
0.30% of span
Required
performance
Transmitter
Calibrated span
Ambient temperature
change
Line pressure
TPE =
span
Where:
± 0.065% of span
Reference
accuracy
Ambient
temperature
effect
Span static
pressure effect
How to Calculate Pressure Transmitter
Rosemount 2051CD, Range 2 [upper range limit
(URL)=250 inH O(623 mbar)]
2
150 inH O (374 mbar)
2
± 50 °F (28 °C)
500 psig (34.5 bar)
Reference Manual
00809-0100-4107
= 0.189% of
Rosemount 2051