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LaserGas II MP Cabinet

Product Code: NEO
Availability: In Stock
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The LaserGas II Multipass (MP) Monitor employs a multipass (Herriott) cell concept to combine long measurement path lengths with a compact analyzer design. The long path will enhance the detection limit. Thus, the MP is the analyzer of choice for measurement of trace levels of gases, offline in a controlled environment. It is also applicable for applications where too high process temperature and/or pressure make an in-situ measurement impossible.

The MP Cabinet monitor is a turn-key instrument. No other operations than connecting power and sample gas tubes are required during installation. To avoid fouling of optical parts in the Multipass cell the cleanliness of the sample gas must be ensured. Filtering the sample gas in an appropriate extractive system may be required for some applications.

  • Short response time (2 – 10 sec.)
  • Very low detection limits (ppb for most gases)
  • No cross interference from background gases
  • Stable calibration, no zero drift
  • No moving parts, no consumables
  • ATEX and CSA certified
C2H2 H2O NH3 + H2O
CO NO2 H2S + CO2
CO2 O2  

Optical path length 0.6 – 12 m (1.9 – 39 Feet) (depends on cell version)

Response time typically 2 – 10 sec (depending on cell and sample gas flow) 

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 °C to +55°C (-4°F to 131°F)

Storage temperature -20 °C to +55 °C (-4°F to 131°F)

Protection classification IP65 (Cabinet), IP20 (19” Rack)

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

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
Gas inlet / outlet 6 mm or 1/4 “ Swagelok (other dimensions on request)

Sample gas flow recommended 5 – 10 l/min

Sample inlet pressure 0.2 – 2.0 Bar abs (2.9 – 29 PSIA)

Purging of laser chamber (optional) Dry and oil-free pressurized air or gas, Nitrogen for O2 and H2O applications

Purge flow maximum 0.5 l/min

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

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) Note: Only for Cabinet version
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
Cabinet version 500 x 510 x 215 mm, 18.4 kg

19" Rack version 480 x 480 x 135 mm, 10 – 14 kg (dependent on measurement cell)

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