Emerson Process Management 2400S manual Measurement Performance

Chapter 10

Measurement Performance

10.1Overview

This chapter describes the following procedures:

•Meter verification – see Section 10.3

•Meter validation and adjusting meter factors – see Section 10.4

•Zero calibration – see Section 10.5

•Density calibration – see Section 10.6

•Temperature calibration – see Section 10.7

Note: All ProLink II procedures provided in this chapter assume that you have established communication between ProLink II and the Model 2400S DN transmitter and that you are complying with all applicable safety requirements. See Chapter 4 for more information.

Note: If you are using Pocket ProLink, the interface is similar to the ProLink II interface described in this chapter, with the exception that the additional meter verification functionality described in Section 10.3.2 is not available.

Note: All DeviceNet tool procedures provided in this chapter assume that you have established communication between the DeviceNet tool and the Model 2400S DN transmitter and that you are complying with all applicable safety requirements. See Chapter 5 for more information.

10.2Meter validation, meter verification, and calibration

The Model 2400S transmitter supports the following procedures for the evaluation and adjustment of measurement performance:

•Meter verification – establishing confidence in the sensor’s performance by analyzing secondary variables associated with flow and density

•Meter validation – confirming performance by comparing the sensor’s measurements to a primary standard

•Calibration – establishing the relationship between a process variable (flow, density, or temperature) and the signal produced by the sensor

Meter validation and calibration are available on all Model 2400S DN transmitters. Meter verification is available only if the meter verification option was ordered with the transmitter.

These three procedures are discussed and compared in Sections 10.2.1 through 10.2.4. Before performing any of these procedures, review these sections to ensure that you will be performing the appropriate procedure for your purposes.

Compensation

Measurement Performance

Troubleshooting

Defaults

Configuration and Use Manual 89