The principle of laser hygrometers.

Principle of the high-response laser moisture meter Model 4010LX

We adopt TDLAS. TDLAS stands for Tunable Diode Laser Absorption Spectroscopy, which is also known as wavelength-tunable semiconductor laser absorption spectroscopy. Laser light generated by a semiconductor laser is irradiated into a measurement cell, and the intensity of the laser light that has passed through the measurement cell is measured. This TDLAS allows for a rapid response to changes in moisture concentration and enables accurate monitoring of saturated vapor amounts. Additionally, the use of dew point meters, which can measure moisture concentration quickly and accurately, is increasing in determining the purchase price of natural gas in Europe and the United States. The measurement range can detect low dew points down to -60 °C dp. For more details on the principles of laser dew point meters, please refer to the URL below.

Other measuring instruments