Process Gas Analyzers
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Tunable Diode Laser Gas Analyzer
Teledyne’s LGA-4000Z series leverages the latest in Tunable Diode Laser Absorption Spectroscopy (TDLAS) to achieve an ultra-fast gas measurement in-line without resorting to extraction and sample conditioning. By tuning the laser to a specific absorption wavelength, based on the gas of interest, the attenuation of the light through a sample cell and the detector can be correlated to the concentration of each gas, per Beer-Lambert Law. The laser provides a narrow absorption band which minimizes the effect of interfering compounds in the process.
Gas Detection Parameters
Gas Detection Parameters
| Gas | Min Range | Max Range | Detection Limit |
| Acetylene (C2H2) | 0-50 ppm | 0-100% | 0.5 ppm |
| Ammonia (NH3) | 0-10 ppm | 0-100% | 0.5 ppm |
| Carbon Dioxide (CO2) | 0-1000 ppm | 0-100% | 40 ppm |
| Carbon Monoxide (CO) | 0-1000 ppm | 0-100% | 40 ppm |
| Ethylene (C2H4) | 0-100 ppm | 0-100% | 1 ppm |
| Hydrochloric Acid (HCl) | 0-100 ppm | 0-50% | 0.1 ppm |
| Hydrofluoric Acid (HF) | 0-20 ppm | 0-50% | 0.05 ppm |
| Hydrogen Sulfide (H2S) | 0-100 ppm | 0-100% | 5 ppm |
| Methane (CH4) | 0-200 ppm | 0-100% | 10 ppm |
| Oxygen (O2) | 0-1% | 0-25% | 0.01% |
| Water/Moisture (H2O) | 0-100 ppm | 0-100% | 0.1 ppm |
- Flame proof design, IP-66 rated enclosure, ATEX and IECEx Zone 1 IIC T6 Certified
- Modular design simplifies service and field part replacements
- Integral automatic gain control (AGC) algorithm ensure optimal signal integrity
- Excellent long-term drift characteristics, less than ± 1% FS over 6 months
- Local OLED display with magnetic buttons to maintain area classification
- Low power (rated 10W)
- 2 x 4-20 mA outputs, 2 x alarm relays, RS-485 / RS-232 / GPRS communications
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