Sensornet ORYX DTS, User Manual

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Oryx DTS User Manual v4 Page 59
Figure 40 - Slope calibration – fixed value
Slope Calibration – Matched Sections
If matched sections are selected from the slope calibration drop down menu, the
user will be required to enter the distance values for the start and end points of two
zones or sections. As described above for the fixed value case, these matched
sections should be known to both be at the same temperature, or known to be
physically co-located such that the temperature profile over the sections is the
same. The software will then automatically calculate the slope calibration value.
See Figure 41.
The two sections of fibre chosen will be highlighted by green and red bands. The
software will ensure that the calculated slope value sets the average temperature
within these bands to be the same.
NOTE: The absolute value, or offset, of the temperature trace does not need to be
correct at this stage. This is corrected for in the next section:- Offset correction.