TDLAS Gas Analyzer With Gas Conditioning System High Temperature Extraction Type Monitoring HCL/HF/NH3
Here are some key details about TDLAS (Tunable Diode Laser Absorption Spectroscopy) gas analyzers:
- Make use of tunable diode lasers that can be precisely tuned to the absorption wavelength of the gas to be measured.
- Lasers in the near-infrared range are commonly used, matching the absorption bands of gases like methane, H2O, CO2, CO, NH3.
- The laser beam passes through the sample gas and the amount of laser light absorbed by the target gas molecules is measured.
- The gas concentration is proportional to the measured absorption following the Beer-Lambert law.
- Extremely fast measurement response times, on the order of seconds or less. Enables real-time analysis.
- High sensitivity and selectivity. Can measure gas concentrations down to ppm or ppb levels.
- Suitable for process control and monitoring applications requiring speed and precision.
- Provides in-situ measurements without requiring extractive sampling.
- Immune to cross-interferences from other gases or changes in temperature and pressure.
- Tuning the laser wavelength mitigates interferences from other gases. Multiple lasers can be used in one TDLAS analyzer.
- Requires periodic calibration using a known concentrated certified reference gas.
- Main applications include measurement of gases like CO2, CO, CH4, H2O, NH3 in industries such as natural gas, chemicals, oil refining.
- Major suppliers include Yokogawa, ABB, Siemens, Emerson, Coulton, NEO Monitors.
In summary, TDLAS analyzers provide rapid and sensitive in-situ gas quantification for critical process monitoring applications.
Applications
☑ SCR, incineration & combustion processes
☑ Emission monitoring:Power generation, engine development, waste incineration furnaces, …
☑ Environmental monitoring: Landfill & green-house gases, livestock, …
☑ Chemical engineering: Production control & monitoring …
☑ Safety: Leak detection, refrigeration, toxic gases, .
☑ Climate control & monitoring: Livestock, climate chambers & rooms
| Measured gas |
HCL/HF/NH3 |
| Method |
Tunable Diode Laser Spectrometry (TDLAS) |
| Range |
HCL/HF: 0-50ppm,0-100ppm,0-500ppm( Customized)
NH3:Above 20ppm
|
| Accuracy |
± 1% full scale reading depending on integration stability (temperature & pressure) |
| Precision |
1ppm |
| Displayed resolution |
0.1ppm |
| Response time |
Less than 15S (at gas flow rate of 3 L/min) |
| Sampling Gas Temperature |
≥180℃ |
| Analog Output |
4`20mA DC, Insulating output, maximum load is 900 ohm, |
| Digital Output |
RS232/485 |
| Power Supply |
90-240VAC / 50/60Hz 120W |
| Warm up time |
30 minutes |
| Interface |
RS232 |
| Ambient Temperature |
Temp:-10-50℃ Humidity:0-90%RH |
| Dimension |
760(H)×500(L)×255(W)mm(analysis cabinet)
700(H)×450(L)×210(W)mm(control cabinet)
|
