NEO Monitors LaserGas - Model Q CF4 -CF4 Gas Detector Sensors
Compared to previous generations of LaserGas™ products, LaserGas™ Q uses mid-infrared spectroscopy to achieve lower detection limits and can detect some common gases that do not have absorption spectra in the near infrared. The detector is not affected by pollutants and corrosive gases and does not require daily maintenance. Since there is no need for sampling pretreatment process, the measurement reliability is further improved and the error caused by the pretreatment process is eliminated. The analyzer is directly connected to the process pipe at both ends through the purge flange with purge gas interface and adjustable angle. The continuous purge gas prevents dust and other contaminants from contaminating the optical window. Just connect the power and signal cables to start real-time measurement.
- Fast response time
- No gas sampling: In-situ measurement
- Line measurement, integral concentration
- over the full stack diameter
- Suitable for harsh environment
- No zero drift
- Stable calibration
- LaserGas Q CF4 is designed for reliable and fast measurement of tetrafluoromethane in continuous emission monitoring especially in the aluminum industry.
- 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
- Optical path length: Typically 0.5 -6 m
- Response time: Typically 10 - 20 sec
- Accuracy: Application dependent
- Repeatability: 1% of range (gas & application specific)
- Range CF4 (preliminary): 0 - 4000 ppb*m
- Detection limit: < 20 ppb
- Temperature: Ambient to 200 ºC
- Pressure: Max 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: RS – 232 format, Optional 10 or 10/100 Base T Ethernet, Optional fiber optic (ASCII – format)
- Relay output (3): High gas-, Maintenance-, Warning- and Fault relays (normally closedcircuit relays)
- 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)
- Purging of laser: Clean dry air, ≈ 15 l/min (Mandatory)
- Purging of windows: Dry and oil-free pres surized air or gas, or by fan
Maintenance
- Visual inspection: Recommended every 6 – 12 months
- Calibration: Check recommended every 12 months
Safety
- Laser class: Class 1 according to IEC 60825-1
- CE: Certified, conformant with LVD 73/23/EEC, including 93/68/EEC
- EMC: Conformant with directive 2014/30/EU
- ATEX: PENDING
- CSA: PENDING
Dimension and weight
- Transmitter unit: 340 x 270 x 170 mm, 6.9 kg
- Receiver unit: 260 x 270 x 170 mm, 5.5 kg
- Power supply unit: 180 x 85 x 70 mm, 1.6 kg