Emerson Rosemount 2090P Reference Manual page 53

Reference Manual
00809-0100-4690, Rev FC
June 2011
Figure 4-1. Transmitter Data
Flow with Calibration Options
Determining Calibration
Frequency
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Sensor
Signal
Sensor
Input
Pressure
Input Device
NOTE
Value on PV line should equal
the input pressure. Value on
AO line should equal the
output device reading.
NOTE
The 2088/2090 has been carefully calibrated at the factory. Trimming adjusts
the position of the factory characterization curve. It is possible to degrade
performance of the transmitter if any trim is done improperly or with
inaccurate equipment.
Calibration frequency can vary greatly depending on the application,
performance requirements, and process conditions. Use the following
procedure to determine calibration frequency that meets the needs of your
application.
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.
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Rosemount 2088 and 2090
Transmitter Ranged 0 to 100 inH
Transmitter Electronics Module
Microprocessor
Digital PV
Output Device
Industry Automation
O
2
20.00 mA
2088s:PT-4763
Online
1 ➡Device Setup
2PV100.00 inH2O
3AO20.00 mA
4LRV0.00 inH2O
5URV100.00 inH2O
4-3
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