The Droplet Measurement Technologies (DMT) liquid water sensor consists of a heated coil in a protective shroud. An electrical current is passed through the coil which results in the coil heating up. The current through the coil is regulated to maintain it at a steady temperature. During flight, liquid water impacts the coil and causes it to cool off. The system compensates by increasing the current through the coil to maintain the steady temperature. Through a mathematical calculation, the amount of current required to maintain the coil temperature can be related to a liquid water concentration.
$230.62 – $1,080.75