Introduction 

The Process Gas Laser Analysis System of LGA-4500(Extractive Model), the extractive process gas analysis 

based on the technology of diode absorption spectroscopy (DLAS),is able to make on-line analysis on carious process gases 

with high dust or high pressure after the extractive treatment and is with such features as strong adaptability and high reliability.

Features

1.Laser extractive measurement, high measurement accuracy, strong anti-interference ability

2. Optical non-contact detection, with the ability to direct measure gas with high temperature and strong corrosion

3. Simple and reliable extractive treatment equipment, with the possibility to be directly installed at the process pipeline

4.While system explosion-proof, supporting the automatic compensation of gas temperature and pressure.

5. Corrosion Resisting High Temperature Type Extractive Pipeline

System Composition

The Process Gas Laser Analysis System of LGA-4000 series Extractive Model) consists of the transmitting unit, the receiver unit, the measurement gas chamber and others. 

The detecting laser, emitted by the transmitting probe, shall pass through the measurement gas chamber, shall be received by the optical sensor of the receiving probe 

and shall be transmitted to the transmitting unit to process and to display after the receiver unit making spectral analysis. 

Technical Parameters

 Linearity error:      ≤±1%F.S.

 Span drift:          ≤±1%F.S./half-year

 Repeatability:       ≤±1%F.S.

 Explosion-proof grade:   Expxdia llC T5

 Protection grade: IP65

 Response time

 Warm-up time:     ≤15Min

 Response time:     ≤5s (T90)

 Interface signals

 Analog output:      2-path 4-20mA, isolation, maximum load of 750 ohm

 Relay output:       3-path relays, 24V, 1A

 Digital communication:  RS485 (RS232 or GPRS optional)

 Electrical characteristics

 Power supply:      100-240V AC/48-63Hz

 Power consumption: < 15W (with no heat tracing)

 EMC:               

 IEC 61000-4-2 IEC 61000-4-4  

 IEC 61000-4-5

 Electrical safety:    IEC 61010-1

 Fuse:   250V AC/1A

 Sample gas’s conditions

 Sample gas’s pressure: 0.5-3 bar (absolute pressure)

 Sample gas’s temperature: -30°C~140°C

 Operation conditions

 Work environment temperature: -30°C~60°C

 Storage temperature: -40°C~80°C

 Purging gas:     0.3~0.8MPa

 industrial nitrogen (99.99% purity for low range O2)or instrument air (without oil and water)

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