NEO Monitors LaserGas - Model Q NO2 - NO2 Tuneable Laser Absorption Spectroscopy (TLAS)
NEO Monitors LaserGas Q NO2 is using Tuneable Laser AbsorptionSpectroscopy(TLAS) i.e a non-contact optical measurement method employing solid-state laser sources. The sensor remains unaffected by contaminants corrosives and does not require regular maintenance. The absence of extractive conditioning systems further improves availability of the measurements and eliminates errors related to sample handling. The monitor is mounted directly onto flanges, which include purge gas connections and a tilting mechanism for easy alignment. Continuous purge flow prevents dust and other contamination from settling on the optical windows. Once power and data lines are connected, measurements are performed in real-time.
Features
- Response time down to 1 second
- No gas sampling: In-situ measurement
- No interference from background gases
- Line measurement, integral concentration over the full stack diameter
- Integrated span check option available
- Suitable for harsh environment
- No zero drift
- Stable calibration
Applications
- LaserGas Q NO2 is designed for reliable and fast measurement of nitrogen dioxide, combustion process control, DeNOx and safety and emission monitoring applications.
Customer Benefits:
- In-situ monitoring
- Highly reliable real time analyzer
- Low maintenance cost
- Reduce emission to the environment
- Easy to install and operate
- Reduce daily operation costs
- Optimize process
- Well proven measurement technique
Technical Specifications
- Optical path length: Typically 0.5-6 m
- Response time: 1 – 2 sec
- Accuracy: Application dependent
- Repeatability: 1% of range (gas & application specific)
- Min range NO2: 0 - 50 ppm
- Max range NO2: 0 - 1000 ppm*m
- Detection limit: < 1ppm
- Temperature: Ambient to 450 ºC
- Pressure: 0.7 - 1.5 bar abs
- Windows material: CaF2
Environmental conditions
- Operating temperature: -20 ºC to +55 ºC
- Storage temperature: -20 ºC to +55 ºC
- Protection classification: IP66
Inputs / Outputs
- Analog output (3): 4 - 20 mA current loop (concentration, transmission)
- Digital output: TCP/IP, MODBUS
- Relay output (3): High gas, Maintenance Warning and Fault
- Analog input (2): 4 – 20 mA process temperature and pressure reading
Ratings
- Input power supply unit: 100 – 240 VAC, 50/60 Hz
- Output power supply unit: 24 VDC, 900 – 1000 mA
- Input transmitter unit: 18 – 36 VDC, max. 20W
- 4 – 20 mA output: 500 Ohm max. isolated
- Relay output: 1 A at 30 V DC/AC
Installation and Operation
- Flange dimension alignment: DN50/PN10 or ANSI 2’’/150lbs (other dimensions on request)
- Alignment tolerances: Flanges parallel within 1.5°
- Purge flow:
- Dry and oil-free pressurised air or nitrogen
- 10 - 50 l/min (application dependent)
- Maintenance
- Visual inspection: Recommended every 6 – 12 months
- Calibration: Check recommended every 12 months
- Validation: In-situ span check with optional internal cell (application dependent)
Safety
- Laser class: Class 1 according to IEC 60825-1
- CE: Certified
- EMC: Conformant with directive 2014/30/EU
- ATEX: PENDING
- CSA: PENDING
Dimension and weight
- Transmitter unit: 420 x 270 x 170 mm, 6.6 kg
- Receiver unit: 265 x 270 x 170 mm, 5.7 kg
- Power supply unit: 180 x 85 x 70 mm, 1.6 kg
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