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Help CenterEM-5-UL Five Gas Analyzer (SO2, CO2, CO, NOx, O2)
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EM-5-UL Continuous Emission Online Monitoring System, coal-fired power plants, ceramics factory
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EM5 series flue gas analyzers are independently developed by Hangzhou Zetian Technology Co., Ltd., based on years of experience in research and development, for domestic and overseas environmental and industrial control site monitoring online analysis. Based on DOAS and chemometric algorithms (PLS) , this analyzer can measure SO2, NO, NO2, O2 , NH3, Cl2, O3 , H2S and etc.With high accuracy and reliability, fast response time, wide selfdeveloped and industrial measurement range and application fields, it has achieved even surpassed similar products home and abroad. It can be widely used in environmental online monitoring, industrial process control, safety monitoring, etc.
Technical Principle
EM-5 flue gas analyzer applies UV DOAS technology. The optical technology platform consists of
light sources,
gas chamber, optical and spectroscopic (including diaphragm, holographic grating, linear array detector) and
other optical components.
Ultraviolet light is sent by the light source through the optical window into white cell gas chamber (optical path 5-15 meters, adjustable) ;absorbed by the sample gas through the gas chamber. The light carrying sample
absorption information gathers through lens coupled into fiber and then transmits through the optical fiber into
spectrometer. After light splitting and photo-voltaic, conversion, absorption spectrum is obtained and analyzed
to calculate the concentration of the related components in gas.
Technical Features
- High measurement accuracy
- The minimum detection limit of SO2 , NO2, NO can be 1mg/m2
- No moisture absorption by ultraviolet , avoiding disturbed by moisture and dust
- No cross interference between the gas being measured (see table 1).
- Directly measure NO2 and NO without NO2 → NO converter
- Low detection limit
- High reliability
- Low zero drift and span drift
- Modularization design
- No optical moving parts and resist to vibration
- Strong gas chamber, saving cost
- Spectrum automatic adjustment technology
- Free from maintenance for long period
- Adopts the pulse source for light source with 10-year service life
Specification
| Measuring Technique | DOAS(SO2,NOx),Electrochemistry(O2) |
| Measuring Range | 0-20-100ppm (SO2,NOx), 0-25%(O2) |
| Linearity Error | ≤±1%F.S. |
| Repeatability | ≤±0.5%F.S. |
| Zero Drifting | ≤±2%F.S./7d |
| Measuring Range Drift | ≤±2%F.S./ 7d |
| Response Time | < 25s( T90 ) |
| Warm-up Time | None |
| Relay Output | 14 |
| Binary Input | 6 |
| Analog Output | 4×4 -20mA |
| Analog Input | 2×4 -20mA |
| Digital Communication | RS232/ RS485 /GPRS |
| Enclosure Rating | IP65 |
| Ambient Temperature | -10ºC~40ºC |
| Ambient Humidity | 0% Rh~95%Rh |
Wide applicable scope
Chloralkali plant PVC process
Titanium white production process.
Sulfur recovery process.
Natural gas purification process.
Methyl iodide analysis for the coal chemical industry.
On-line air monitoring.
Coal-fired power plants.
Cement plant.
Industrial furnaces.
The desulfurization process monitoring.
Denitration process monitoring.
Incinerators
1. Whole instrument OEM & ODM
2. Module parts OEM & ODM
3. Flexible cooperation mode: retail, wholesale, distributors
4. Environmental & industrial monitoring solutions
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