Dew point tester

Used for:

Measuring the dew point of insulating glass units in laboratory or on the field if a leakage is suspected.

Conforms to:

ASTM E546 and E576 standards.

Principle of operation:

The dew point tester consists of two cylindrical metal blocks chilled with dry ice positioned one over the other and separated by a gap of controllable distance. The glass sample is placed on the device, and a thermometer shows the temperature changing at the point of contact with the glass. Slowly reduce the air gap  between upper and lower metal blocks by turning the control ring while watching the temperature of the upper metal block. Note down the temperature as soon as moisture is observed on the other side of the glass pane.

Features:

The higher the dew point, the greater the amount of humidity in the glass pane.

The device can be used on vertical installed glass. Suction cups are provided with the instrument.

Technical characteristics:

Diameter of the exposed flat circular surface in upper block: Φ25,4mm ;

Volume of dry ice container:Φ75×145mm ;

Temperature range to -50 °C ;

Accuracy of digital thermocouple : 0.5 °C ;