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Using the Product Correctly and Safely
Read this operation manual and LD-5/LD-5R operation manual carefully to the end before
using the product and make sure it is used correctly. Also, keep this manual handy.
Calibration of the LD-5/LD-5R Digital Dust
Indicator
Before shipment, we have calibrated the digital dust indicator using standard particles, but
the measurement sensitivity may change due to contamination of the interior of the
detector that can occur during use, electrical or mechanical changes, or its maintenance
status.
Therefore, in addition to the daily maintenance of the dust indicator, we recommend that
calibration be performed annually to maintain its accuracy. To have the LD-5/LD-5R
digital dust indicator calibrated, be sure to send it with the PM2.5 cyclone particle size
selector for LD-5 removed and the LD-5/LD-5R accessory air sampling port attached. The
air sampling port is required for calibration, so store it and do not lose it.
To have the LD-5/LD-5R digital dust indicator calibrated, be
sure to send it with its accessory air sampling port attached.
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