Chapter 9
Pressure Compensation
and Temperature Compensation
9.1Overview
This chapter describes the following procedures:
•Configuring pressure compensation – see Section 9.2
•Configuring external temperature compensation – see Section 9.3
•Obtaining external pressure or temperature data – see Section 9.4
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.
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.
9.2Pressure compensation
The Model 2400S DN transmitter can compensate for the effect of pressure on the sensor flow tubes. Pressure effect is defined as the change in sensor flow and density sensitivity due to process pressure change away from calibration pressure.
Note: Pressure compensation is an optional procedure. Perform this procedure only if required by your application.
9.2.1Options
There are two ways to configure pressure compensation:
•If the operating pressure is a known static value, you can configure that value in the transmitter.
•If the operating pressure varies significantly, you must write a pressure value to the transmitter at appropriate intervals, using an appropriate output assembly. See Section 9.4.
Note: Ensure that your pressure value is accurate, or that your pressure measurement device is accurate and reliable.
Compensation
Measurement Performance
Troubleshooting
Defaults
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