Summary
JNYQ-O-15 Laser Gas Analyzer
The JNYQ-O-15 laser analyzer adopts the principle of Tunable Diode Laser Absorption Spectroscopy (TDLAS), which can measure the concentration of specific gases in process gas components, including CO, CO2, O2, H2S, HCL, HF, etc. This system has the characteristics of high sensitivity, fast response speed, no interference from background gases, and non-contact optical measurement.
Detailed description
The JNYQ-O-15 laser analyzer adopts the principle of Tunable Diode Laser Absorption Spectroscopy (TDLAS), which can measure the concentration of specific gases in process gas components, including CO, CO2, O2, H2S, HCL, HF, etc. This system has the characteristics of high sensitivity, fast response speed, no interference from background gases, and non-contact optical measurement.
Monitoring principles
The laser process gas analysis system is based on semiconductor laser absorption spectroscopy (DLAS), also known as "single line spectroscopy" measurement technology. The system uses a tunable semiconductor laser as the light source, and modulates the laser frequency by modulating the working current intensity of the semiconductor laser, so that the laser scanning range is slightly larger than the single absorption spectral line of the measured gas. As a result, the laser beam of a specific wavelength emitted by the semiconductor laser is selectively absorbed by the measured gas when passing through the measuring tube, resulting in a attenuation of laser intensity. So the system utilizes the Beer Lambert relationship between different gas components with different characteristic absorption spectra and gas concentration, infrared or laser absorption spectra. By detecting the absorption size of the absorption spectra (i.e. laser intensity attenuation information), the concentration of the measured gas can be obtained.
Characteristic
• Not subject to cross interference from background gases;
• Can be applied to harsh working conditions such as electric coke capture;
• Low maintenance cost;
• Not affected by dust and window pollution interference;
• Not affected by changes in environmental parameters of the measured gas;
• Integrated design, compact structure, high reliability;
• Modular design, capable of replacing all functional modules on site, including laser modules;
• High degree of intelligence, convenient operation and maintenance;
• No need for sampling preprocessing system, simple system structure;
• Fast response speed, with a response time of no more than 1 second, ensuring timely process control;
• No sample gas emissions, environmentally friendly and pollution-free;
• Direct analysis of process gases with high measurement accuracy.
Technical parameter
|
category |
parameter |
index |
|
Technical indicators |
Monitoring components |
CO, CO2, O2, H2S, HCL, HF, etc |
|
range |
The specific range is determined according to customer requirements |
|
|
Linear error |
≤±1%F.S./Half a year |
|
|
Span Drift |
≤±1%F.S./Half a year |
|
|
Repeatability |
＜1% |
|
|
Explosion proof level |
ExdIICT6 Gb |
|
|
Protection level |
IP66 |
|
|
Response time |
Preheating time |
≤15min |
|
Response time (T90) |
≤1s |
|
|
Interface signal |
Analog output |
2-way 4-20mA current (isolated, maximum load 750Ω) |
|
Relay output |
3-way output (relay specification: 24V, 1A) |
|
|
Analog input |
2-way 4-20mA current (temperature and pressure compensation) |
|
|
Communication interface |
RS485/RS232/GPRS |
|
|
Electrical characteristics |
source |
24VDC（18～36VDC） |
|
Power dissipation |
＜10W |
|
|
Working conditions |
Ambient temperature |
-30～60℃ |
|
Storage temperature |
-40～80℃ |
|
|
Purging gas |
0.3-0.8MPa industrial nitrogen or purified instrument gas, etc |
Key words:
Flue gas analyzer, flue gas online monitoring, VOCS online monitoring, waste incineration online monitoring
Classification:
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