NEO Monitors LaserDust - Model MP, LP, XLP - Medium Path, Long Path & Extra Long Path Monitors
NEO Monitors LaserDust Medium Path (MP), Long Path (LP), and Extra Long Path (XLP) Monitors are compact, optical dust monitors for true continuous in-situ measurement of dust concentration or opacity. The monitors are designed for measurement across pipes, stacks, and ducts with typical path lengths of 0.5 – 10 m LaserDust Monitors use a transmitter/receiver configuration to measure the dust concentration along the optical line of sight. Our true non-contact approach is superior to point type dust meters.
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With innovative laser technology the LaserDust com...
With innovative laser technology the LaserDust combines two measurement principles in one instrument. At low dust levels it operates with forward scattered light technology: The incident laser light is scattered by dust particles and collected onto a solid-state sensor for dust quantification. This highly sensible mode enables detection limits of < 0.5 mg/Nm3 and is unaffected by dust depositing on the windows. At high dust levels the LaserDust will measure transmittance or opacity: Light absorption by dust particles is captured by a 2nd sensor.
Specifications
- Response time down to one second
- Suitable for high temperatures
- Cross stack measurement up to 10 m
- High dynamic range (mg or g with one instrument)
- Scattered light detection for high sensitivity
- Non-contact measurement
- No moving parts
Applications
LaserDust the ideal choice for obtaining the best measurement data. Monitors are most typically used in:
- Aluminum smelters and steel works
- Waste incinerators, power plants or cement kilns
- Scrubber and filter optimization
- Bag house filter surveillance
- Dust explosion prevention
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 techniques
Technical Specifications
- Process temperature: Above dew point up to 700 º C
- Process pressure: 0.1 – 1.5 bar abs (optional windows for up to 5 bar)
- Detection limit: < 0.5 mg/Nm3 (in scattered mode)
- Measurement range: min. 0 – 15 mg/Nm3 (scattered mode), particle size >1micron max. 0 – 10.000 mg/ Nm3 (transmission mode), particle size >1micron
- Resolution: 0.05 mg/Nm3
- Optical path length**:
- MP: 0.5 – 3 m
- LP: 3 – 6 m
- XLP: 6 – 10 m
- Response time: 1 – 2 sec
- Pulse mode: 50 ms
Environmental conditions
- Operating temperature: -20 º C to +55 º C
- Storage temperature: -20 º C to +55 º C
- Protection classification: IP66
Inputs / Outputs
- Analog output: 4 – 20 mA current loop (concentration, transmission)
- Digital output: TCP/IP, MODBUS, Optional fibre optic
- Relay output: High dust-, Warning - and Fault relays (normally closed-circuit relays)
- Analog input: 4 – 20 mA process temperature and pressure reading
Ratings
- Input power supply unit: 100 – 240 VAC, 50/60 Hz, 0.36 – 0.26 A
- Output power supply unit: 24 VDC, 900 – 1000 mA
- Input transmitter unit: 18 – 36 VDC, max. 20 W
- 4 – 20 mA output: 500 Ohm max. isolated
- Relay output: 1 A at 30 V DC/AC
Installation and Operation
- Flange dimension:
- MP: DN50/PN10
- LP: DN80/PN10
- XLP: DN150/PN10
- Optional ANSI or other sizes on request
- Alignment tolerances: Flanges parallel within 1.5º
- Purging of windows: Dry and oil-free pressurised air or gas, or by fan
- Purge flow: 50 – 100 l/min (application dependent)
Maintenance
- Visual inspection: Recommended every 6 – 12 months (no consumables needed) Remote instrument check by Ethernet connection or external modem possible
- Calibration: Recommended every 12 months (against gravimetric analysis)
- Validation: Integrated zero and span check
Safety
- Laser class: Class IIIb according to IEC 60825-1
- CE: Certified
- EMC: Conformant with directive 2014/30/EU
Explosion protection (optional)
- IECEx/ATEX zone 2: II 3 GD T100 °C Ex nA nC II T5
Dimension and weight
- Transmitter unit: (MP, LP, XLP) 200 (plus 100 for purge unit) x 270 x 170 mm, 6.2 kg
- Transmitter unit: (Ex version) 200 (plus 100 for purge unit) x 270 x 310 mm, 7.9 kg
- Receiver unit (MP): 300 (plus 100 for purge unit) x 120 x 120 mm, 3.9 kg
- Receiver unit (LP): 380 (plus 100 for purge unit) x 120 x 120 mm, 5 kg
- Receiver unit (XLP): 410 (plus 100 for purge unit) x 270 x 170 mm, 8 kg
- Power supply unit: 180 x 85 x 70 mm, 1.6 kg
** Other OPLs on request
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