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.

