The Tunable Diode Laser Spectroscopy (TDLS) is the perfect technology to use when you are looking for a selective measurement and a fast response time on some gas components as NH3, HCL, HF, low or high CO, or even O2 when conditions are too rough for standard O2 Zirconia In-Situ analysers. It uses a solid-state laser source with a wavelength that can be adjusted to the gas component unique spectrum, also called gas component “fingerprint”. TDLS method is a non-contact optical technology and therefore the emitter (laser source) as the sensor stays protected from any contamination or corrosion and so the maintenance operation and the cost of operation are very low compared to other technologies.
The LAS 300 XD uses a semiconductor laser light source that is rapidly tuned over the absorption peak of the gas being measured.
The LAS 300 XD uses fast, advanced signal processing electronics and Direct Absorption Spectroscopy (DAS). This combination leads to very low noise DAS measurements that are comparable or often better than those made using wavelength modulation spectroscopy (WMS).
Main advantages of LAS 300 XD technology:
- Sensitive. With a large dynamic range
- Accurate. The laser absorption relates directly to the quantity of gas being measured at a molecular level. This leads to extremely accurate measurements using fundamental and proven signal-processing algorithms in both single gas and multi-gas applications.
- Linear. No complex calibration curves required. Unaffected by changes in background species.
- Fast. Rapid laser tuning ensures an accurate measurement even with fast changing process conditions.