Emerson MMI-20019043 Manuel D’Utilisation

4.7.3

Configure petroleum measurement using the

Field Communicator

1.

Choose Online > Configure > Manual Setup > Measurements > Set Up Petroleum.

2.

Specify the API table to use.

a. Open the Petroleum Measurement Source menu and select the API table

number.

Depending on your choice, you may be prompted to enter a reference
temperature or a thermal expansion coefficient.

b. Enter the API table letter.

These two parameters uniquely specify the API table.

3.

Determine how the transmitter will obtain temperature data for the petroleum
measurement calculations, and perform the required setup.

a. Choose Online > Configure > Manual Setup > Measurements > External

Pressure/Temperature

 > Temperature.

b. Set External Temperature to Disabled.

a. Choose Online > Configure > Manual Setup > Measurements > External

Pressure/Temperature

 > Temperature.

b. Set External Temperature to Enabled.
c. Set Correction Temperature to the value to be used.

a. Ensure that the primary mA output has been wired to support

HART polling.

b. Choose Online > Configure > Manual Setup > Measurements > External

Pressure/Temperature

 > Temperature.

c. Set External Temperature to Enabled.
d. Choose External Polling.
e. Set Poll Control to Poll As Primary or Poll as Secondary.
f. Determine whether you will use Polling Slot 1 or Polling Slot 2.
g. For the chosen slot, set Ext Dev Tag to the HART tag of the exter-

nal temperature device.

h. For the chosen slot, set Polled Variable to Temperature.

Tip
•

Poll as Primary

: No other HART masters will be on the network.

•

Poll as Secondary

: Other HART masters will be on the network.

The Field Communicator is not a HART master.

Configure process measurement

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