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Increasing Resolution for Reporting

 
Now that we have finished positioning our detectors, we can increase the resolution of the detectors and the fire zone for reporting.
 
This can be easily achieved by applying one detector's resolution to the other detectors in the project. Return to the Project Items tree and in the properties panel for Flame Detector 01 scroll down to the Ray Casting header and change the value of the resolution by highlighting 1 and entering a new value of 0.5. Once the new resolution has been entered, right click Flame Detector 01 and choose Copy Resolution to All. from the dropdown menu. This will duplicate the set resolution of Flame Detector 01 to the other detectors in the project.
 
The text for each of the detectors should now be gray. Click the button in the toolbar to update the project. Although this has not significantly changed the coverage statistics, it will matter when the fire zone resolution is increased. Remember from earlier in the guide, that for best results increase the detector resolution first and then the zone resolution.
 
Next, select Main Zone from the Project Items tree and in the properties panel change the resolution of the zone from 0.125 to 0.1. Even though this is only a 0.025 decrease in spacing size, the number of points has increased (from 156,849 points to 302,016 points). Click the button.
 
Increasing the resolution of zones significantly increases the accuracy of coverage statistics since the internal and external points calculation is dependent on the number of points. This is important because when a zone is defined and when changing the zone resolution, Detect3D calculates which points are internal and which points are external to the geometry. To view which points are determined to be internal, select the zone from the Project Items tree. Under the Appearance heading of the properties panel click the checkbox next to Show Internal Volume. This will display the points that Detect3D has estimated to be internal. The image below shows the results of the internal points calculation.
 
 
 
With both the flame detectors and the fire zone now at a higher resolution, coverage statistics are more accurate. Additionally, the Contour and Isovolume are also more accurate and more defined. The resulting coverage is shown in the image below. Due to this increase in accuracy, minor changes in coverage may occur. It the case our coverage of 0ooN has changed from 3.1% to 3.2%.
 
 
 
Save your file when you are finished reviewing the results.