- Home
- Companies
- Hangzhou Chunlai Technology CO., Ltd.
- Products
- Zetian - Model LGT-300 - One Side ...
Zetian - Model LGT-300 -One Side Installation Laser Gas Analyzer
LGT-350 laser moisture analyzer is a high 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, LGT 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.
- Non-contact optical measurement, low drift and with long service life.
- One-side installation, no complex adjustment of optical path required.
- Reference gas cell adopted; online calibration; no disassemble needed
- "SIngle line spectrum" technology, free from interference of background gas
- In-situ measurement, no sample conditioning required and avoiding the problems that sample is absorbed during conditioning process, blocking, unit damage and etc.
- Low maintenance cost
Main functional modules of LGT-350 includes transmitter, receiver, reference unit and measurement unit. 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 according to the relationship between the second harmonic signal and the gas concentration.
Principle: TDLAS (tunable diode laser absorption spectroscopy)
Technical Index
- Linearity Error: ≤ ±1%F.S.
- Repeatability: ≤ 1%
- Span Drift: ≤ ±1%F.S./halfyear
- Zero Drift: ≤ ±1%F.S./half year
- Maintenance Cycle: ≤ 2 times/year (clean optical window)
- Calibration Cycle: ≤ 2 times/year
- Response Time(T90): ≤ 1s
Signal I/O:
- Analog Output: 2 x 4-20mA output (isolation, max load 750 Q )
- Analog Input: 2 x 4-20mA input (temperature and pressure compensation )
- Relay Output: 2 (24V, 1A)
- Digital Output: RS485/RS232/GPRS
Work Condition:
- Power Supply: 24VDC or 220VAC
- Ambient Temperature: -20 °C ~ +60 °C
- Purge Gas: 0.3MPa - 0.8MPa industrial nitrogen, purification instrument air, etc.
Installation:
- Installation Method: In situ installation
- Apply to converter gas recovery gas analysis, CDQ circulating gas analysis; oxygen measuring electric fishing coke oven gas after analysis; pulverized coal injection gas analysis; ammonia escaping gas analysis in the cement industry; trace CO detection and analysis electricity, cement, environmental protection; HCl and HF trace analysis in environmental protection and chemical industry