In situ TDLAS Gas analyzer

In Situ TDLAS Gas Analayzer

The ITLA-1000xx (In-Situ Tunable Laser Analyzer) laser gas analyzer is a highly precise analyzer for gas measurement, developed based on tunable diode laser absorption spectroscopy. One-side mounting installation is much easier than cross-stack. By using a tunable semiconductor laser, the ITLA-1000xx series laser gas analyzer scans the specific absorption lines of the measured gas (no background gas) to get the second harmonic of the gas. Through processing and analyzing the second harmonic and the broadening information of the gas, the concentration of the gas is obtained.

System Composition

The main functional modules of the ITLA-1000xx include the transmitter, receiver, reference unit, and measurement unit. The transmitter drives the tunable diode to emit a laser of certain wavelengths, which passes through the gas cell and then reaches the receiver. The receiver performs signal processing to obtain the second harmonic signal, then calculates the processing to obtain the second harmonic signal, then calculates the concentration according to the relationship between the second harmonic signal and the gas concentration.



  • Non-contact optical measurement, low drift, and long service lite
  •  One-side installation, no complex optical path adjustment required
  •  Reference gas cell adopted; online calibration; no disassemble needed
  • Signal line spectrum" technology, free from the interference of background gas
  • In-situ measurement, no sample conditioning is required and avoiding the problems that sample is absorbed during the conditioning process, blocking, unit damage, etc.
  • Low maintenance cost
Model No ITLA 1000xx
Sensor Technology TDLAS
Measuring Ranges As Per Customer Requirement
Repeatability 1%
Linearity +1/F.S
Response time <1 SEC
Installation Method In- Situ Installation
Ambient Temperature -20 Deg C- +60 Deg C
Power Supply 24 VDC


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