Here are some key features of trace gas analyzers:
- Designed to measure very low concentrations of gases, down to parts-per-million (ppm) or parts-per-billion (ppb) levels.
- Utilize technologies like gas chromatography, mass spectrometry, tunable diode lasers, cavity ring-down spectroscopy.
- Require high sensitivity and precision for ppm/ppb trace gas analysis.
- Often use multi-pass optical cells to obtain longer optical pathlengths and enhance detection limits.
- Applications include monitoring toxic gases like HF,HCL,CH4,NH3 ,CO, H2S, SO2, VOCs at very low levels.
- Useful for measuring greenhouse gases such as methane, nitrous oxides for environmental research.
- Employed for verifying regulatory emissions compliance in industries like oil and gas, chemicals, wastewater.
- Both laboratory and field (portable) trace gas analyzers are available.
- Need sophisticated sample collection and conditioning systems to ensure accuracy.
- Regular calibration and maintenance essential to maintain sensitivity and prevent drift.
- Allow measurement of gases not possible with standard gas analyzers.
- Leading manufacturers include Thermo Fisher, Agilent, Picarro, Aerodyne Research, Gasmet.
- Provides critical ultra-low level monitoring capabilities for research and regulatory applications.
In summary, trace gas analyzers enable precise quantification of gases down to ppb/ppm levels for environmental and industrial process monitoring not possible otherwise.
Trace gas analyzer TDLAS technology ESE-LASER-U500 model based on the principle of tunable semiconductor laser absorption spectroscopy (TDLAS), laser gas analyzer scans and analyzes the gas absorption lines of specific wavelength, and realizes the gas concentration measurement by combining the digital lock-in amplifier and the advanced technology of long optical path. laser gas analyzer can realize high resolution, high precision, stable and reliable measurement of trace gases, and meet the requirements of process analysis and environmental monitoring.
Features
☑ ppb ultra high sensitivity Spectrum single line scanning, precise lock test wavelength
☑ Automatic compensation of atmospheric temperature, pressure and humidity
| Performance parameters |
| Gas |
Range |
Resolution |
Repeatability |
Linearity |
Drift |
| NH3 |
0-2000ppb |
2ppb |
≤2%FS |
≤2%FS |
≤ ±2%FS |
| CH4 |
0-5000ppb |
5ppb |
≤0.2%FS |
≤1%FS |
≤ ±0.5%FS |
| CO |
0-50ppb |
0.02ppm |
≤2%FS |
≤2%FS |
≤ ±2%FS |
| CO2 |
0-500ppm |
1ppm |
≤1%FS |
≤1%FS |
≤ ±1%FS |
| HCL/HF |
0-2000ppb |
1ppb |
≤2%FS |
≤2%FS |
≤ ±2%FS |
| |
| Warm up time |
30mins |
Digital output |
RS232/485 |
Analog output |
|
| Power supply |
AC100-240V/47-63Hz
120W
|
Relay output |
Load capacity: AC/DC 24V/1A; concentration overrun alarm, transmittance and laser temperature abnormal alarm (customized) |
| Environmental parameters |
| Optical path |
Above 30 meters |
Gas temperature |
<=60℃ |
Gas Pressure |
|
| Sampling flow rate |
1L/min |
Environmental temp |
-10~55℃ |
Environmental pressure |
|
| Size |
5U |
Weight |
10kgs |
Applications
☑ Trace gas measurement
☑ Greenhouse gas measurement
☑ Measurement of gas emission plume diagram
☑ Air quality monitoring
