Torque Tube Temperature Compensation - GE Masoneilan 12420 Instruction Manual & Safety Manual

7.6. TORQUE TUBE TEMPERATURE COMPENSATION

7.6.1. G
LOBAL PURPOSE
The 12400 Series instrument includes a non-intrusive and integrated software temperature compensation of the torque tube
from -210°C to +450°C.
There are two temperature sensors located in the sensor board and the main circuit board of the instrument.
Variation of torque tube Young modules over ambient and process temperatures shall be compensated to prevent any zero
shift and span variation on very high or low process temperature applications.
The software module compensates these potential variations of Young modules that may happen in case of temperature
difference between temperature saved during calibration procedure and current temperature (impacted by ambient and
process temperatures).
This function is available on device revision Firmware 114 or later.
ValVue suite software is required to set this temperature compensation feature. Push-buttons and any HART handheld do not
enable to activate and set this feature.
7.6.1. T
EMPERATURE COMPENSATION ACTIVATION
Through ValVue suite software, the temperature compensation feature is enabled or disabled on the Advanced Setup menu.
a. Change device mode to Advance Setup and go on the Advanced Setup tab.
b. Activate the Torque Tube temperature compensation by clicking TT Activation checkbox.
c. To define the expected process temperature, click the Process Temperature checkbox and enter the corresponding
temperature value in degC.
d. Validate by clicking on Apply.
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