Near infrared TDLAS NH3 (ammonia) ppm concentration analysis system 1512nm

TDLAS (Tunable Diode Laser Absorption Spectroscopy) is a new gas detection method developed by combining a diode laser with a long path absorption cell, which uses laser wavelength modulation to pass through the characteristic absorption region of the measured gas. The spectrum of the semiconductor laser source used in TDLAS technology has a width much smaller than the broadening of gas absorption lines, resulting in a single line absorption spectrum. Therefore, TDLAS technology is a high-resolution absorption spectroscopy technique. Ammonia: NH3 is a colorless gas with a strong pungent odor, lighter than air. This gas usually comes from concrete admixtures used in construction and additives and whitening agents in interior decoration materials. Long term exposure to ammonia can burn the skin, eyes, and mucous membranes of respiratory organs. If a person inhales too much ammonia, it can cause lung swelling and even death.