The KF100 Flue Gas Ultraviolet Analyzer, based on UV absorption
spectroscopy technology and chemometric algorithms,can be used to
measure the concentration of SO2, NOx,O2,NH3,CL2,O3,H2S and other
gases. With high accuracy, high reliability, fast response, and
wide applicability, it can be widely used in online environmental
monitoring,industrial control,security monitoring and other
occasions. The performance indicators of the KF100 series have
reached or exceeded those of other domestic and foreigh competing
products.
>>> Technical Features
1) The analyzer gets the UV absorption spectrum from the following
optical technology platform that consists of a light source, a gas
chamber, fiber optics, a spectrometer(including a diaphragm,
holographic gratings, and a linear array )
2) The UV-visible light emitted from the light source enters into
the gas chamber through the optical window, where it is absorbed by
the sample gas flowing through the gas chamber. Then the light
carring the absorption information of the tested samples gas is
converged by a lens and coupled into the optical fibre. After the
light is transmitted into the spectrometer through the optical
fibre for light splitting and sampling, the absorption spectrum of
the gas can be obtained.
3) By using the DOAS technology to analyze the spectrum, the
concentration of relevant contents in the gas can be analyzed.
>>> Measuring principle
1) The light souce emits ultraviolet beam which transfers to gas
cell through optical fiber.
2) After absorption by measuring gas, the light beam transfers
through optical fiber to spectrometer.
3) Being dispersed through the grating, and converted into electric
signal by the array sensor, a continuous absorption. spectrum of
measuring gas is thereafter obtained.
>>> Technology Comparison
| Item | UV Hot-Wet Meriod | NDIR |
| Spectral Range | Complete and continous 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
corrison proof |
| Zero Calibration Period | Long(DOAS algorithm) | Short |
| Anti-Interface | The combination of complete% continous 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 |
| Reliability | No moving parts | Moving parts existed |
>>> Technical Specifications
| SO2/Nox Analyzer |
| Technical Principle | UV-DOAS |
| Installation type | Hot-wet Extractive |
| Measurement Range | 0-200ppm, 0-1000ppm,0-3000ppm |
| Zero Drift | ≤ ±2%F.S. |
| Span Drift | ≤ ±2%F.S. |
| Accuracy | ≤ ±1% |
| Response Time(T90) | ≤ 60s |
| Linearity | ≤ ±1%F.S. |
| O2 Analyzer |
| Technical Principle | Zirconial/Electrochemical |
| Measurement Range | 0-25% |
| Response Time(T90) | ≤ 60s |
| Linearity | ≤ ±2%F.S. |
| CO, CO2 Analyzer |
| Technical Principle | NDIR |
| Installation type | Extractive |
| CO Measurement Range | 0-1000 ppm |
| CO2 Measurement Range | 0-20% |
| Zero Drift | ≤ ±2%F.S. |
| Span Drift | ≤ ±2%F.S. |
| Accuracy | ≤ ±1% |
| Response Time(T90) | ≤ 60s |
| Linearity | ≤ ±2%F.S. |
>>> Technical Data for UV Gas Analyzer
| Project | Indicators |
| SO2 Detection Range | Min:0-50 ppm, 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 |
