5 Configure process measurement
applications
5.1 Set up the API Referral application
The API Referral application corrects line density to reference temperature and reference pressure according
to American Petroleum Institute (API) standards. The resulting process variable is referred density.
Restriction
The API Referral application is not compatible with the following applications:
• Gas Standard Volume Measurement (GSV)
• Advanced Phase Measurement
• Concentration measurement
5.1.1 Set up the API Referral application using the display
Enable the API Referral application using the display
The API Referral application must be enabled before you can perform any setup. If the API Referral application
was enabled at the factory, you do not need to enable it now.
Prerequisites
The API Referral application must be licensed on your transmitter.
Procedure
1. Choose Menu → Configuration → Process Measurement.
2. Choose Flow Variables → Volume Flow Settings and ensure that Flow Type is set to Liquid.
3. Return to the Process Measurement menu.
4. If the concentration measurement application is displayed in the list, choose Concentration
Measurement and ensure that Enabled/Disabled is set to Disabled.
The concentration measurement application and the API Referral application cannot be enabled
simultaneously.
5. Enable API Referral.
a) Choose Menu → Configuration → Process Measurement → API Referral.
b) Set Enabled/Disabled to Enabled.
Configure API Referral using the display
The API Referral parameters specify the API table, measurement units, and reference values to be used in
referred density calculations.
Prerequisites
You will need API documentation for the API table that you select.
Depending on your API table, you may need to know the thermal expansion coefficient (TEC) for your process
fluid.
Configuration and Use Manual Configure process measurement applications
MS-00809-0200-1600 May2024
Configuration and Use Manual 47
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