Configuring Temperature Compensation; Enabling External Temperature Compensation - Emerson Micro Motion 2700 Configuration And Use Manual

Startup
Figure 2-7
2.8

Configuring 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 fixed
temperature value), rather than the temperature value from the Coriolis sensor, is used in
petroleum measurement or enhanced density calculations only. The temperature value from
the Coriolis sensor is used for all other calculations.
• If external temperature compensation is disabled, the temperature value from the Coriolis
sensor is used in all calculations.
Configuring temperature compensation requires two steps:
1. Enabling external temperature compensation (Section 2.8.1)
2. Configuring a temperature source (Section 2.8.2)
2.8.1

Enabling external temperature compensation

To enable temperature compensation, refer to the flowcharts in Figure 2-8.
Figure 2-8
MMI Coriolis Flow >
Transducer Block >
Compensation >
Enable Disable Ext
16
Configuring an AO function block for pressure compensation – Bus parameters
Configure channel
Configure channel
Enabling external temperature compensation
EDD
Temperature
Temp
Block: Transducer Block 1 (Slots 11)
Index 121 (AO Compensation), value = 1
Block: Analog Output Block (Slots 9 and 10)
Index 37 (IN channel), value = 0x0b72
Index 38 (OUT channel), value = 0x0b72
Bus parameters
Enable temperature
comp.
ProLink II
View >
Preferences
Select Use External
Temperature
Apply
Block: Transducer Block 1 (Slot 11)
Index 110 (enable temperature compensation)
Model 2700 Transmitter with PROFIBUS-PA