First Detector

To define the first flame detector:

  1. Select Flame Detector from the Select Item dropdown menu in the Add Item Tab.

  2. Enter the Name to be “Flame Detector 01”. You'll notice that Detect3D automatically increments the number of the detectors as they are added to the project. See the automatic numbering section for more information on using other naming conventions in Detect3D.

  3. For the Model, use the Insight Numerics, Detect3D Default. Creating new FOV models is discussed in Tutorial 10.

  4. For the location of Flame Detector 01, use the Point Pick Tool to select the point shown in Figure 05 below, or enter ( -0.26, -0.09, 3.59 ) into the coordinate text boxes. This coordinate is specifically chosen as it is on the edge of the installation pole. It is important to ensure that the entered coordinate is not positioned behind CAD geometry pieces. Step 9 will describe what to do if this happens.


    Detect3D Fire and Gas Mapping Tutorial 1 First Detector Location

    Tutorial 1 - Figure 05 - Flame Detector 01 location point shown in the Viewport Window


  5. Enter an Azimuth of "45" degrees to rotate the flame detector’s field-of-view (FOV). By default, a 0 degrees azimuth points in the north or positive y-direction.

  6. Click the Preview checkbox (  ) to see that the detector is pointed towards the middle of the platform.

  7. Enter a Declination of "10" degrees to rotate the detector slightly downwards. The preview will update automatically.

  8. Skip over the Rays section for now, the default settings for rays have been chosen for optimal speed and accuracy and will be discussed in more detail in Calculation Theory Guide.

  9. With the preview still showing for Flame Detector 01, zoom into the model and see that it is slightly behind the installation pole as seen in Figure 6. If we left the detector in this position some of the rays will be blocked by the edge of the post and thus give an inaccurate result. To fix this, ensure that a value of "0.1" is entered into the Increment textbox and click the Forward Arrow to nudge the location of the detector by 0.1 m in the direction it is currently aimed. The detector should now be in front of the post, as shown in Figure 7. The forward and backwards angles can be used to move the detector along the vector that it is currently pointing. This process can also be used to account for mounting hardware.


    Detect3D Fire and Gas Mapping Tutorial 1 Incremented Detector BAD

    Tutorial 1 - Figure 06 - Preview of Flame Detector 01 before increment. This is a BAD position for a detector as the pole will block the detector's rays


    Detect3D Fire and Gas Mapping Tutorial 1 Incremented Detector GOOD

    Tutorial 1 - Figure 07 - Preview of Flame Detector 01 after increment. This is a GOOD position for a detector as there are no immediate obstructions 


  10. Ensure your device is positioned similar to Figure 07 above and click Add Item button to add the first flame detector to the project items tree. 


From the Project Items Tab, right-click on Flame Detector 01 and select Toggle Label. Right-click the item again and choose Obstructed as the FOV Visibility option. Your 3D window should now be similar to the figure below.


Detect3D Fire and Gas Mapping Tutorial 1 Obstructed FOV

Tutorial 1 - Figure 08 - Detect3D window of obstructed field-of-view for Flame Detector 01