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NEO Monitors LaserGas - Model II OP -Open Path Monitor for High Performance Gas Analyser
LaserGas™ II Open Path is a compact, high performance gas monitor for ambient long distance monitoring. The LaserGas™ II OP consists of a transceiver and retro-reflector unit. The retro-reflector unit consists of one or several cube corners in a weather proof enclosure, which reflects the light back to the transceiver. The detector collects the returned light for calculation of the gas concentration. An optional auto-alignment unit can also be applied to ensure consistent alignment over time.
The monitor is installed on our proprietary x/y alignment platform (goniometer). Adapters for fixed installation on platforms or for tripod use are available. The instrument also includes a visible aiming laser and sighting optics for easy alignment even over long distances. Hoods for protection of the optical windows on transceiver and reflector side can be supplied.
- Easy to install, limited need for maintenance
- Response time down to 1 second
- No cross interference from other gases
- Very low detection limits (ppb and low ppm)
- Unaffected by fog or rain down to <1% transmission
- Optional Ethernet connection and auto-alignment unit
- Wide range of detectable gases
- Mounted on our proprietary x/y alignment platform (goniometer). Adapters for fixed installation on platforms or for tripod use are available
- Equipped also for hazardous areas
Open Path monitors are critical in emission monitoring across a wide range of industrial applications:
- Oil and gas industry
- Petrochemical refineries
- Landfill sites
- Chemical plants
- Metal industry
- Fireprotection
- Traffic exhaust
- and more
- Compact high performance gas monitor for ambient long distance monitoring
- No cross interference from other gases
- Easy to install
- Limited need for maintenance
- Low cost of ownership
- Proven and reliable
- Path length: Typically 10 - 500 m
- Response time: 1-2 sec
Environmental conditions
- Operating temperature: -20 ºC to +55 ºC
- Storage temperature: -20 ºC to +55 ºC
- Protection classification: Transceiver unit IP66 (retro-reflector and battery unit IP65)
Inputs / Outputs
- Analog output (3): 4 – 20 mA current loop (concentration, transmission)
- Digital output: TCP/IP, MODBUS, Optional fibre optic
- Relay output (3): High gas-, Maintenance-Warning - and Fault (normally closed)
Ratings
- Input power supply: 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
- Battery supply unit (optional):
- Input: 90-264 VAC,
- 50/60 Hz, Output: 24
- VDC, fused 1A
Installation and Operation
- Installation: Special X/Y alignment platform, tripod or auto alignment unit.
- Purging of windows: By fan or blower (only recommended for certain applications)
Maintenance
- Interval: Recommended every 6 - 12 months
- Calibration: Check recommended every 12 months
Safety
- Laser class: Class 1 according to IEC 60825-1
- CE: Certified
- EMC: Conformant with directive 2014/30/ EU
Explosion protection (optional)
- ATEX zone 1:
- II 2 G Ex px II T5
- II 2 D Ex pD 21 IP66
- T64 ºC
- IECEx/ATEX zone 2:
- II3 G Ex nA nC [op is]
- IIC T4 Gb
- II 3 D Ex tD A22
- T100 ºC
- CSA: Class I, Div. 2, Groups A, B, C and D; Temp. Code T4; non-incendive
Dimension and weight
- Transceiver unit: 500x70x180 mm, 6.5 kg
- Transceiver unit (Eex P): 500x270x320 mm, 8.2kg
- Retro reflector unit: Size depends on number of reflectors (1 - 25 reflectors)
- Power supply unit: 180x85x70 mm,1.6 kg
- Battery supply (optional): Size depends on version (10 h / 24 h) max. 280 x 190 x 180 mm, 13.8 kg