| Customization: | Available |
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| Brand: | Kelisaike |
| Customized: | Customized |
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Item | UV Hot-Wet Method | NDIR | |
Spectral Range | Complete and continuous absorption spectra obtained through holographic grating and diode array detection | Non Dispersive, characteristic absorption spectra obtained through band-pass filter | |
Linear Response | High wavelength resolution secures linear response | band-pass filtration compromises linear response | |
SO2 Loss | Hot-wet prohibits SO2 dissolution | Condensation inevitably causes SO2 loss | |
Sampling System | Heat tracing. Requests only dust filtration, simple and no corrosive | Cold-dry. Requests dust filtration, condensation, water removal and corrosion proof | |
Zero Calibration Period | Long (DOAS algorithm) | Short | |
Anti-Interference | The combination of complete & continuous absorption spectra, high wavelength resolution, DAOS algorithm erases interference from dust, moisture and background gases | Vulnerable to moisture interference | |
Gas Cell | Connected by optical fiber, easy to replace and low maintenance cost | Complex to replace and maintenance | |
Maintenance | |||
Reliability | No moving parts | Moving parts existed |
Project | Indicators |
SO2 Detection range | Min:0-50ppm,Max:0-100%, |
NO Detection range | Min:0-50ppm,Max:0-100%, |
O2 Detection range | 0-25%, Electrochemical or zirconia |
Linearity error | ≤±1%F.S. |
Repeatability | ≤1% |
Zero drift | ≤±1%F.S./ week |
Span drift | ≤±1%F.S./ week |
Ambient temperature | 5ºC~45ºC |
Response time(T90) | <60s |
Size | 19" *3U*320mm |
Analog interface | 3-way 4-20mA output,2-way 4-20mA output |
Data interface | 4-way switch input; 8-way relay output |
Communication Interface | 1-way RS-232,1-way RS-485(Supports Mod-bus protocol) |
Power | 220VAC/50Hz 100W |
Protection grade | IP42 |
Sample gas input and output interface | Ø6 Tube Fittings |


