Set Up Temperature Data For Concentration Measurement - Emerson Micro Motion 5700 Configuration And Use Manual

Configure process measurement applications
March 2019
3. Scroll to Step 3, then perform the following actions:
a) Set Reference Temperature for Referred Density to the temperature to which line density will
be corrected for use in the specific gravity calculation.
b) Set Reference Temperature for Water to the water temperature that will be used in the specific
gravity calculation.
c) Set Water Density at Reference Temperature to the density of water at the specified reference
temperature.
The transmitter automatically calculates the density of water at the specified temperature. The
new value will be displayed the next time that transmitter memory is read. You can enter a
different value if you prefer.
4. Click the Apply button at the bottom of Step 3.
Set up temperature data for concentration measurement using ProLink III
The concentration measurement application uses line temperature data in its calculations. You must decide
how to provide this data, then perform the required configuration and setup. Temperature data from the on-
board temperature sensor (RTD) is always available. You can set up an external temperature device and use
external temperature data if you want to.
The temperature setup that you establish here will be used for all concentration measurement matrices on
this meter.
Important
Line temperature data is used in several different measurements and calculations. It is possible to use the
internal RTD temperature in some areas and an external temperature in others. The transmitter stores the
internal RTD temperature and the external temperature separately. However, the transmitter stores only one
alternate temperature value, which may be either an external temperature or the configured fixed value.
Accordingly, if you set up polling for temperature in one area, and digital communications in another, and
configure a fixed temperature value in a third, the fixed value will be overwritten by polling and digital
communications, and polling and digital communications will overwrite each other.
Prerequisites
If you plan to poll an external device, the primary mA Output (Channel A) must be wired to support HART
communications.
Procedure
1. Choose Device Tools > Configuration > Process Measurement > Concentration Measurement.
The Concentration Measurement window is displayed. It is organized into steps that allow you to
perform several different setup and configuration tasks. For this task, you will not use all the steps.
2. Scroll to Step 4.
3. Choose the method to be used to supply temperature data, and perform the required setup.
82 Micro Motion Model 5700 Transmitters with Configurable Outputs
Configuration and Use Manual
MMI-20025166