Tunable Diode Laser GAS Analyzer With Gas Conditioning System High Temperature Extraction Type Monitoring HCL/HF/NH3
A tunable diode laser gas analyzer (TDLA) is a type of gas analysis equipment that uses the principle of tunable diode laser absorption spectroscopy (TDLAS) to measure the concentration of a specific gas or gases in a sample. This technology is known for its high sensitivity, speed, and selectivity.
Here's a simple overview of how TDLA works:
1. **Laser Source**: The TDLA system includes a laser that emits light at a specific wavelength, which can be tuned to match the absorption line of the target gas.
2. **Gas Absorption**: When the laser light passes through the gas sample, the target gas molecules absorb some of the light. The amount of light absorbed is directly proportional to the concentration of the gas in the sample.
3. **Detection**: After the laser light has passed through the sample, a detector measures the intensity of the remaining light. By comparing this with the intensity of the light before it passed through the sample, the analyzer can calculate the concentration of the target gas.
**Advantages of TDLA include:**
- **Non-contact Measurement**: Since TDLA is a spectroscopic technique, it does not require the gas sample to come into contact with the analyzer, which can reduce maintenance and enhance longevity.
- **High Sensitivity and Selectivity**: TDLA can detect very low concentrations of the target gas, and it is highly selective because each gas has a unique absorption spectrum.
- **Fast Response Time**: TDLA can provide near-real-time measurements, which can be crucial in industrial process control and environmental monitoring applications.
- **Suitable for Harsh Conditions**: TDLA is often used in high-temperature, high-pressure, or corrosive environments where other types of gas analyzers may not be suitable.
As of my knowledge cutoff in September 2021, several companies manufacture TDLA equipment, including Yokogawa, ABB, Siemens, Endress+Hauser, and SpectraSensors. Always make sure to check with the manufacturer or distributor for the most up-to-date product details and specifications.
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)
|
