The SEMTECH LASAR is a multi-gas analyzer that accurately measures gas concentrations from trace levels to full concentrations.

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SEMTECH LASAR

SEMTECH LASAR: Laser Absorption Spectrometer with Amplified Resonance

SEMTECH LASAR is an optical feedback, cavity enhanced, laser absorption spectrometer, capable of measuring both trace levels and high concentrations of a wide range of gases. This high precision, multi-gas analyzer has been designed with no moving parts, hygroscopic optics or liquid N2 cooling requirements and, therefore, has wide applicability for both test cell and on-board vehicle applications.

This video explains the technology behind the SEMTECH LASAR system.

  • Features
  • Specifications
  • Trace Gas Analysis: The highly sensitive system is capable of measuring gases at ppb level.*
  • Multi-Gas Analysis: The SEMTECH-LASAR provides exceptional selectivity, enabling simultaneous multi–gas measurement without interferences, regardless of the composition matrix.*
  • No Sample Pre-Treatment Required: Low pressure in the sampling system significantly reduces adsorption/desorption and removes water condensation in the line.
  • No Drift: Information contained in the signal enables automated zeroing of the analyzer every 100 msec. Built-in advanced pro-active stabilization solutions and self-monitoring artificial intelligence enables long-term stability.
  • Robustness: The SEMTECH LASAR contains no moving parts, no hygroscopic optics and does not require liquid N2 cooling. It has been designed and built to meet the stringent requirements of test cell and on-board, mobile applications.
  • Low Fouling: The sampling system enables low flow rate sampling without reducing sample transfer time. Deposition of contaminants in lines and filters is largely eliminated, significantly reducing system maintenance.
  • Ease of Integration / Commissioning: The SEMTECH LASAR is pre-calibrated for your emissions measurement application. It includes a touch screen interface and on-board PC for local control and real-time display of results. The SEMTECH LASAR can be monitored over the internet, with immediate access to results, diagnostics, and raw signal information from any remote location.
  • Traceability: 30 to 90 days of raw spectra and data collection and operation parameters are stored locally, enabling additional post processing of data for traceability and validation.

*Contact Sensors, Inc. to discuss your application and fully define the performance of your custom designed solution.

Sampling
Flow Rate: 3 - 9 L/hr at sampling point
Max. Sample Temperature: 600°C (1100°F) For higher temps, contact Sensors
Max. Sample Humidity: H2O(g) < 30% - Standard; H2O(g)>30% - TBD
Sample Pressure: 1000 mbar ± 100 mbar @ sampling point - Standard; Higher sample pressures - optional
Sampling Line: Non condensing conditions @ 50 - 100 mbar: PFA, PTFE, or Silcosteel Stainless Steel
Condensing conditions @ 50 mbar: 40C PFA, PFTE, or Silcosteel Stainless Steel Heated Lines
Dimensions
Size: Standard 19" 4U rack
Weight: 20 kg (44 lbs)
Options: Wall Mounted; C1D1, C1D2, ATEX
Electronics
Display / Control: 5.7" diagonal color touch screen
PC OS: Windows® XP®
Software: WinProCeas©
Data I/O
Standard: Ethernet; RS232; RS485; Modbus/JBus
Optional: 10 Hz data refresh rate
Analog outputs; other I/Os on request
Installation Requirements
Operating Temperature: 15-25°C (59-77°F) Standard
10-40°C
(50-104°F) Optional
Power Requirements: < 200W; 110-220 VAC; 50-60 Hz

 

Gases Measured
Diatomic
H2 O2      
Nitrogen
NH3 NO N2O NO2 HCN
Sulfur
H2S COS CS2    
Oxides
SO2 SO3 CO CO2 H2O
Halogenides
HF HBr HCl    
Alcohols
CH3OH C2H5OH      
Aldehydes
CH2O C2H4O      
Hydrocarbons
CH4 C2H2 C2H4 C2H6  

The SEMTECH LASAR can measure gases from the ppb’s to 100% concentration levels with linearity of instrumental response up to 4 orders of magnitude.

The use of non-fibered lasers provides great flexibility in the selection of spectral range(s), providing the user with a wide array of calibration ranges, sensitivities and response times.

Please contact Sensors to discuss your application and our engineers will devise a configuration based on your analytical needs.