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84 Micro Motion
®
Model 2400S Transmitters for PROFIBUS-DP
Pressure Compensation and External Temperature Compensation
9.3 External temperature compensation
External temperature compensation can be used with the petroleum measurement application or the
enhanced density application:
• If external temperature compensation is enabled, an external temperature value (or a static
temperature value), rather than the temperature value from the sensor, is used in petroleum
measurement or enhanced density calculations only. The temperature value from the sensor is
used for all other calculations.
• If external temperature compensation is disabled, the temperature value from the sensor is
used in all calculations.
There are two ways to implement external temperature compensation:
• You can use an output module to obtain temperature data from the system. See Section 9.4.
• If the operating temperature is a known static value, you can configure that value in the
transmitter.
Note: Ensure that your temperature value is accurate, or that your temperature measurement device is
accurate and reliable.
To enable and configure external temperature compensation:
• With ProLink II, see Figure 9-4.
• With a PROFIBUS host with the EDD, see Figure 9-5.
• With PROFIBUS bus parameters, see Figure 9-3.
Figure 9-4 External temperature compensation – ProLink II
Configure
Enable Use External
Temperature
Enable
Apply
Enter Temperature units
(1)
View Menu >
Preferences
ProLink >
Configuration >
Temperature
Set up output
module
(2)
Enter External
Temperature
YesNo
Use static
temp value?
Apply
Apply
Done
(1) Temperature measurement unit must be
configured to match temperature unit used
by external device or static temperature
value. See Section 6.3.
(2) See Section 9.4.