A new H2O moisture and analyzer technology is available that employs tunable laser diode (TDL) spectroscopy to provide highly accurate and virtually instantaneous measurements of trace amounts of a particular gas (H2O in this instance). By its nature, the TDL based gas detection method is not susceptible to aging affects, making its factory calibration a timeless constant. The result is a very low maintenance analyzer that does not require consumables or scheduled calibration.
TDL-based analyzers have revolutionized the measurement of gases in petrochemical streams such as natural gas. The technology employs a simple measurement that uses a fundamental principle: molecules vibrate when excited by light at specific wavelengths.