Zetian - Model LGT-200 - Laser Gas Analyzer (Flameproof)
From Industrial Process - Laser Gas Analyzer
LGT-200 laser gas analyzer uses TDLAS technology and long-path reflection technology, which greatly improves the detection limit. It can analyze O2 , CO2, NH3 , CO , CH4 , H2O, HCl, HF, etc, providing a new solution of online measurement of trace gases for natural gas, petrochemicals, environmental protection and steel and other industries.
System Configuration
LGT-200 consists of transmitter, receiver and display panel. The transmitter drives the tunable diode to emit laser of certain wavelengths, which passes through the gas cell, then reaches the receiver. The receiver performs signal processing to obtain second harmonic signal, then calculates the concentration base on the relationship between the second harmonic signal and the gas concentration. The display unit not only shows the measuring results, but also realizes loading and setting of parameters with magnetic pen.
Technical Characteristics
- High selectivity
TDLAS is high resolution spectrum technology, due to the 'fingerprint' characteristics of the spectrum, it is not affected
by the interference of other gases. This feature compared with other methods molecularhas obvious advantages
- High versatility
TDLAS is an effective general technology to all activist withinfrared absorption. Only need to change laser and standard
gas, the same instruments can be convenient to measure the other components. Based on this characteristic, it can be
easily changed to multi-component measurement instrument.
- High sensitivity
TDLAS has the advantages of rapid response speed and high sensitivity. In the case of not losing sensitivity, its time
resolution can be found in ms level.
Features
- Combine TDLAS and long-path technology to improve the detection limit
- Integration proof method, applicable to explosive situations
- Backplane is separated from flameproof enclosure,easy to maintain
- OLED screen featuring light weight, wide viewing angle, fast response adapt to industrial environments
- 'Single line spectrum' technology, free from interference of background gas.
- Multi-reflection technology achieves optical path up to 25m, improving detection limit greatly.
- Optical path length can be adjusted, measurement range covers constant to trace.
- Integrated flame-proof design, high reliability and stability.
- Innovative Hall button design, better than infrared key way.
- Optical non-contact measurement, small drift
Technical Data
- Response Time: ≤1s (T90)
- Linear Error: ≤ ±1%F.S.
- Span Drift: ≤ ±1% F.S./ half year
- Calibration Cycle: ≤2 times/ year
- Type Of Protection: ExdIICT6 GB
- Analog Output: 2×4-20mA output
- Analog Input: 2×4-20mA input
- Digital Communications: RS485/RS232/GPRS
- Working Temp.: -20?~+60?
- Purge gas: 0.3MPa ~ 0.8MPa N2, clean air
Applications
- Apply to trace HCl and HF analysis of chemical industry, environmental protection and other industries; trace H2S analysis of natural gas, petrochemical, environmental protection, coal and chemical industries; CO2 analysis of medical, coal chemical industry, environmental protection and other industries; trace CO analysis of electricity, cement, steel, environmental protection and other industries.
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