:: VITS partnership
:: References

:: Online vs manual
:: Savings potential
:: Moving vs fixed heads
:: Double vs one-sided
:: Moisture detection

:: Contact us
:: Scienta online

























QCS for Impregnated paper > Moisture detection


Moisture detection

There are basically two methods of moisture detection. One is based on the absorption of NIR (near infrared) light and the other is based on Microwave resonance. They both have certain benefits over the other and the optimal choice depends on the product or paper grade itself.

The comparison below highlights the relevant differences and is meant to help select the optimal method for your production.

NIR vs
MICROWAVE /
Features
NIR measurement Microwave measurement
Color sensitivity
-light colors
-dark colors
Low
High
Insensitive
Insensitive
Additives
sensitivity
Low Low
Accuracy High Medium
Calibration Must be done for each quality separately.
Can be cumbersome with frequent quality changes.
Sufficient to do for a group of similar qualities. Easier with frequent quality changes.
Repeat quality -
calibration
Could solve the issue of frequent calibration. Not needed.
Accuracy with low
B/W base paper
Accuracy is maintained. Accuracy low.
TRADE-OFF Accuracy maintained with all base paper qualities.
High color sensitivity with dark colors.
Calibration difficult with frequent quality changes.

Less expensive than microwave.
Accuracy lost with low B/W papers.
Insensitive to colors.
Calibration not an issue with frequent quality changes.

More expensive than NIR.


for more information on any particular point

:: Contact us!