General Description

The Wireless Data Acquisition Unit (WiDAQ) Pressure version delivers high precision measurements using its 24-bit A/D converter and low noise high precision measurement circuitry.

This device can accurately measure external sensors based on resistance and voltage as well as differential pressure using an onboard pressure sensor.

Excessive positive or negative pressures can move large quantities of moisture-laden air through holes in a building's shell, leading to condensation and mould growth within building cavities. Moist insulation is less efficient. Building experts have observed pressure-derived moisture problems at only 1 Pascal (enough to raise a column of water .004 inches) during severe humidity conditions." John Krigger, Residential Energy (3rd Edition), page 75.

Applications

Building Science Research

• Differential pressure sensing
• Moisture content, temperature and RH sensing