5. Measurements with the Piranha System
Light Measurement
Piranha & QABrowser Reference Manual
2014-06/5.5C
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3. Set up the Piranha and the handheld computer according to the description in Setting
Up the Piranha .
4. In the QABrowser select Monitor or Viewing box from the Type of Measurement
menu.
5. Next select parameter Luminance from the menu.
6. The Select Detector screen is now displayed. Select the Piranha Light Probe-M (the
M stands for monitor).
7. Tap Select.
8. The real-time display for luminance is now displayed. Tap Reset. Place the light
detector on the surface where you want to measure the light.
9. Press and hold the shutter. Read the value
on the real-time display. You can now
move the Piranha Light Probe to other
points and measure the light.
If you are measuring very low light intensities it may occur that the Piranha does not
"start" to measure. You should then do as follows:
1. Do as described in step 1 to 8 above.
2. Press and hold the shutter. If the Piranha does not start to measure, lift the Piranha
Light Probe and direct it towards a bright spot (with the shutter button pressed). Do
not release the shutter button.
3. Place the Piranha Light Probe on the spot where you want to measure. Do not
release the shutter button.
4. Read the result on the display. Do not release the shutter button.
5. Move the Piranha Light Probe to the next spot where you want to measure. Do not
release the shutter button.
6. Read the result on the display. Do not release the shutter button.
7. Continue and do not release the shutter button.
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