Configure Gas Measurement Using The Field Communicator; Configure Fundamental Gas Measurement Parameters Using The Field Communicator - Emerson Micro Motion SGM Series Configuration And Use Manual

Configure process measurement using the Field Communicator
The value you enter is automatically rounded to the nearest valid value. Valid values for
Temperature Damping are 0, 0.6, 1.2, 2.4, 4.8, ... 38.4.
8.3 Configure gas measurement using the
Field Communicator
This section guides you through the tasks required to set up and configure gas
measurement.
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8.3.1 Configure fundamental gas measurement parameters
using the Field Communicator
The fundamental gas measurement parameters are required for all gas process variables.
Prerequisites
You must be able to supply pressure data to the meter.
You must be using absolute pressure.
If you plan to poll an external device for pressure or 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 for some external values. To check the
current polling configuration, choose Configure > Manual Setup > Inputs/Outputs >
External Device Polling. If you are already polling for temperature or pressure, 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 and the polled value are stored in the same
location in device memory. As a result, polled data will overwrite a fixed value.
Before you decide how to supply temperature data, consider the other ways that line temperature
data will be used and plan accordingly.
Procedure
1.
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Configure fundamental gas measurement parameters using the Field Communicator

(Section 8.3.1)
Configure gas compressibility measurement using the Field Communicator
(Section 8.3.2)
Configure energy content measurement using the Field Communicator
(Section 8.3.3)
Choose Configure > Manual Setup > Measurements > Optional Setup > Gas
Measurement > Calculation Constants.
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Micro Motion Gas Specific Gravity Meters (SGM)