Description
The Dry Air Pac® Test Kit (Model DAP-TK) is a self contained device for visually monitoring moisture in air streams. The “Tester” consists of an adjustable needle valve. ASME safety relief valve and a sight glass gage housing containing moisture sensitive media. The media changes color in the presence of water vapor. When the media is blue, the air contains less than 20% moisture (relative humidity).
The media will change to pink when the moisture level in the air rises above 20% relative humidity. This means that ice plugs could be forming and you need to take action.