PVB Humidity Meter

Architectural Laminated

Automotive Laminated

Used for:

Measuring humidity at the roll, during lamination and after lamination. The PVB Humidity meter measures the water contained in the PVB before and after lamination.

If needed, the layer thickness can also be measured.

Principle of operation:

PVB humidity measurement is important to prevent delamination. Indeed, adhesion works best with humidities between 0.4 and 0.65%. If the water content exceeds this range, e.g., due to humidity entering the system from outside, the adhesion is reduced and the PVB layer can detach from the glass (delamination). In order to prevent this from happening, the water content needs to

be closely monitored during the production, storage, transportation, and lamination of the glass.

It is composed of a light source with a wavelength range of 400 – 4700nm and a reflective mirror.

To measure humidity, the sample is placed between the light source and the reflective mirror. A wave length of 1450nm to 1940nm is used:

Features:

• The PVB humidity meter is calibrated for each customer based on their samples.
• Special alternating light technique which distinguishes itself by a very high time constancy
• Display: colour display TFT with screen saver; 480 x 272 dots, 7” WVGA Touchscreen, resistive 4-wire
• Data interfaces: 1 x USB and 1 x Ethernet interfaces

Technical characteristics:

Measurement range: 0–1% humidity / 0–1 / 0–2 mm thickness

Accuracy: +/- 0.01 %; Reproducibility: 0.005 %,