13.2 Configure temperature compensation
Temperature compensation adjusts process measurement for the effect of temperature
on the sensor. Temperature compensation is always enabled. You must decide how to
provide temperature data to the meter, then perform the required configuration and
setup.
• Configure temperature compensation using ProLink III (Section 13.2.1)
• Configure temperature compensation using the Field Communicator (Section 13.2.2)
13.2.1 Configure temperature compensation using ProLink III
Temperature compensation adjusts process measurement for the effect of temperature
on the sensor. Temperature compensation is always enabled. You must decide how to
provide temperature data to the meter, then perform the required configuration and
setup.
Prerequisites
If you plan to poll an external device for temperature, ensure that the meter has the
required polling slots available. The meter provides four polling slots, and they may be
already in use. You may need to use a fixed value or digital communications for some
external values. To check the current polling configuration, choose Device Tools >
Configuration > Polled Variables. If you are already polling for temperature, you can use
the existing polled data.
Important
Temperature data is used in several measurements and calculations, for example: gas measurement,
temperature compensation, and base density. For each of these, you can configure the temperature
source. The RTD temperature data is stored separately in device memory. However, if you choose
anything other than RTD, be aware that the fixed value, the polled value, and the digital value are all
stored in the same location in device memory. As a result, polled data or digital input will overwrite a
fixed value.
Before you configure Line Temperature Source, consider the other ways that line temperature data
will be used and plan accordingly.
Procedure
1. Choose Device Tools > Configuration > Process Measurement > Line Temperature.
2. Set Temperature Source to the method you will use to supply temperature data, and
perform any required setup.
Option
Description Setup
RTD Temperature data from the on-
board temperature sensor
(RTD) will be used.
a. Set Temperature Source to RTD.
Measurement support
Configuration and Use Manual 129
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