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.
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.
Option
Description
Setup
Internal
temperature
Temperature data from the on-
board temperature sensor
(RTD) will be used for all
measurements and
calculations. No external
temperature data will be
available.
a. Set
Line Temperature Source
to Internal.
b. Click
Apply
.
Configuration and Use Manual
Configure process measurement applications
MMI-20048166
April 2019
Configuration and Use Manual
61