Specials
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LaserGas II Open Path

Product Code: NEO
Availability: In Stock
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 NEO Monitors LaserGas II Open Path (OP) Monitor is s a compact, high performance gas analyzer for long distance monitoring in ambient air. Measurement lengths of up to 1000 m. The OP Monitor utilizes a transmitter / reflector configuration to measure the average gas concentration along the optical line-of-sight. As option a self-contained, battery-powered version is available with a control keypad and a flash memory for data logging.

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.

  • Unaffected by dust, fog, or rain down to 1% transmission
  • Up to 1000 m measurement path
  • No cross interference from moisture (or other gases)
  • Stable calibration, no zero drift
  • No moving parts, no consumables
  • ATEX and CSA certified

Specifications

Optical path length up to 1000 m (one way) Optical path length up to 1000 m (one way)

Response time 1 – 2 sec
Averaging time Rolling average from 2 seconds to 24 hours (exp. decay)
Repeatability +/- Detection limit or +/- 1% of reading, whichever is greater
Linearity < 1%
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
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 closed-circuit relays)
Analog input 4 – 20 mA process temperature and pressure reading
Internal memory (optional) 8 MB flash memory (sufficient for 24 h logging at 60 sec averaging time)
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
Battery supply unit (optional) input: 90-264 VAC, 50/60 Hz output: 24 VDC, fused 1 A
Installation and Operation
Installation Special X/Y alignment platform or tripod
Alignment tolerances Typically +/- 1 m RAD deviation (application dependent)
Purging of windows Optional: Dry and oil-free pressurised air or gas, or with fan
Maintenance
Visual inspection Recommended every 6 – 12 months (no consumables needed))
Remote instrument check by Ethernet connection or external modem possible
Calibration Check recommended every 12 months
Security
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 2004/108/EC
Explosion protection (optional)
ATEX zone 1 II 2 G Ex px op is Gb II T4, II 2 D Ex pD 21 IP 66 T64°C
ATEX zone 2 II 3 G Ex nA nC op is Gc IIC T4, II 3 D Ex td A22 IP65 T100°C
CSA Class I, Div. 2, Groups A, B, C and D; Temp. Code T4; non-incendive
Dimension and weight
Transceiver unit 500 x 270 x 180 mm, 6.5 kg
Transceiver unit (EEx P version) 500 x 270 x 320 mm, 8.2 kg
Retro reflector unit Size depends on number of reflectors, e.g. 400 x 200 x 400 mm, 13 kg for 9 reflectors
Power supply unit 180 x 85 x 70 mm, 1.6 kg
Battery supply (optional)) 280 x 160 x 125 mm, 6.9 kg

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