In-Situ cross duct laser (TDLS) gas analyzer

LAS 5000XD

The In-Situ TDLS gas analyzer has been designed for meeting the requirements of a large range of CEMS and Process applications.

LAS 5000XD uses Tunable Diode Laser Spectroscopy (TDLS) and comes in various models for measuring parameters such as NH₃ + H₂O, HF, CO + CO₂, O₂, HCl + H₂O, etc.
It combines robustness, fast response time (1 s) and high accuracy measurement in harsh environments (ready for Ex Zone II).

Key operator benefits of LAS 5000XD In-Situ laser gas analyzer:

No sampling system needed
No gas temperature influence
Gas matrix interference free
Calibration free measurement

Thanks to ClearPath, interference of relative humidity, O₂ or CO₂ is removed in purging areas.

Download the brochure

New Embedded ClearPath functionality
Highly sensitive and selective measurement
High signal-to-noise ratio
No measurement drift
Response time 1 s
Large dynamic range from ppm to %
Real-time communication between Transmitter (Tx) and Receiver (Rx)
Robust, ready for Ex Zone II (certification to come)

Interference of relative humidity, O₂ or CO₂ is removed in purging areas.

No need for N₂ or dry air purge
High accuracy of O₂ measurement
High accuracy of H₂O measurement
High accuracy of CO₂ measurement

Low maintenance and cost of ownership
No need for N₂ or dry air purge: Oil & dust free air instrument is enough
Process optimization leading to reduction of operating costs

A WIDE RANGE OF APPLICATIONS FOR CEMS AND PROCESS

Ammonia slip control (DeNox)
Process and combustion control
HF emission control in aluminum plant
HCl/SO₂ abatement control
Ethylene cracking furnace control
HCl level in semiconductor production
Ammonia concentration control in pet food, fertilizer plants, etc.

Measurable parameters
Pollutant	Range
NH₃ + H₂O	0–10 ppm / 0–5000 ppm + 0–5% / 0–50%
HF	0–3 ppm / 0–500 ppm
CO ppm + H₂O	0-50 ppm / 0-1% + 0-10% / 0-50%
CO% + H₂O	0-1% / 0-100% + 0-10% / 0-50%
CO% + CO₂	0-1% / 0-100% + 0-1% / 0-100%
CO₂ + H₂O	0-1% / 0-100% + 0-10% / 0-50%
O₂	0-1%/ 0-100%
HCl + H₂O*	0-10 ppm / 0-5000 ppm + 0-10% / 0-50% (*gas temperature must be above 150°C).
Other gases	Available upon request: CH₄, H₂S, H₂, NO…

Technical Specifications
Technology	ADLAS (Advanced Detection Laser Absorption Spectroscopy) • Optimized Opto-Mechanical Design • High Speed Low-Drift Electronics • Powerful Signal Processing and Algorithm • Independent Spectroscopy Technique
Lower Detection Limit	< 1% of FS
Response Time (0–90%) – Short	1 s
Lack of fit/Linearity	≤ ±1%
Flue Gas Temperature (°C max) NH₃ + H₂O / HCl + H₂O / HF CO + H₂O / O₂ / CO + CO₂	+400°C (Depends on the concentration range) +1200°C (Depends on the concentration range)
Flue Gas Pressure	2 bars max (absolute)
Display on Tx	4 x 20 LCD
Communication	Modbus RTU (RS485) / Ethernet (RJ45) – Web server
Power supply type	+ 24 V DC, ripple and noise 50 mV
Power consumption	15 W (warm-up) < 15 W in standard use
Recommended T° (ambient)	-20°C to +55°C
IP index Tx & Rx enclosures	IP65
Flange specification requirement on stack	DN50 PN16, 2’’ – 150 lbs, Class 150
Flange material	SS 316 L
Air consumption (main purge – necessary)	5-50 L/min (to adjust according to site conditions) (dry and oil free, ISO 8573.1 Class 2-3)
Air consumption (secondary purge – recommended)	2-3 L/min (dry and oil free, ISO 8573.1 Class 2-3)
Stack diameter compatibility	From 0.5 to 20 m

Note – The technical specifications are defined in the following conditions: Gas temperature = 25°C / gas
pressure = 1013 mbar / pathlength = 100 cm / ambient temperature = 25 °C

Options
Junction Box	Analog I/O (2 x 4-20 mA/2 x 4-20 mA) – Digital Output (2 relays)
Thermal Shield	Thickness: 20 mm (100°C<Tp<300°C) ; 40 mm (300°C<Tp<600°C) ; 60 mm (Tp above 600°C).
Audit Cell
Inline Cell
Alignment Tool
Weather protection covers