Point Based Traverse of a Round Duct
1. Insert the hotwire probe into the DC580 and turn the meter on.
2. Enter the duct type and size. Prepare the duct for transverse
measurements as outlined on the previous page.
3. Press the
key. The display will prompt for time or point based
traverse. Use the
key to select point based traverse record.
4. Press the
key to confirm the selection.
5. Divide the duct into at least 10 equal boxes, you will need to take
the reading in the center of each box. Be sure that the sample
points are no more than 4 inches apart from center to center. If
needed you can add more sample points (boxes) to cover larger
duct sizes. Insert the hotwire probe all the way into the duct at the
first hole. Make sure the white dot is facing the air flow.
Press the Up Arrow
key repeatedly until
the timer symbol is
seen.
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