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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.
Option Setup
Temperature data
from the sensor
a. Choose Online > Configure > Manual Setup > Measurements > External
Pressure/Temperature > Temperature.
b. Set External Temperature to Disabled.
A user-configured
static temperature
value
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.
Polling for tempera-
ture
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
56 Micro Motion
®
Model 2700 Transmitters with Analog Outputs