TDLS Laser microgas analyzer_北京杜克泰克科技有限公司

TDLS Laser microgas analyzer

TDLS Laser microgas analyzer

Principle

EDK series products adopt enhanced TDLS technology with a scanning wavelength of 0,1nm to avoid cross-interference of the absorption wavelength of the target gas，Also known as the "fingerprint spectrum," it enables high-resolution near-infrared absorption measurements. Electronic phase-locking technology can extract and separate the absorption information of the measured gas from the photoelectric information. This detection method does not need a physical reference pool and provides continuous sensor state monitoring. EDK TDL6900 series products provide high precision and low detection limit solutions. The instrument has the characteristics of non-contact measurement, free calibration, low cost and easy operation with high accuracy and selectivity for the gas under test.

EDK TDL6900 series products can easily measure some trace gases that are not easy to measure by conventional methods, such as NH3, CH4, CO2, H2O, etc Monitoring and analysis of these gases are critical in many industrial applications. High sensitivity and wide dynamic range are essential features of tunable semiconductor laser spectroscopy (TDLS) technology for the measurement of sub-ppm to % of gases

Typical application	Series products
CH4 methane landfill	EDK 6901 A – Atmospheric trace CH4 monitoring
Biogas analysis and monitoring	EDK 6902 A - Atmospheric trace CO2 monitoring
Continuous monitoring of pollutant emissions	EDK 6903 A - Atmospheric trace NH3 monitoring
Escape emissions	EDK 6903 H - Trace NH3 monitoring in high temperature and humidity
Nature gas monitoring and analysis	EDK 6904 H- Trace HCl monitoring in high temperature and humidity
Agriculture field	EDK 6900 X - CH4/NH3、 CO2 (NDIR)、O2 (ECD)
Industrial process control
The flue gas denitration SCR/DeNOx
Climate change research
Environmental research
Breathing analysis

Advantages

Ultra high sensitivity

Functional safety, continuous status report

Long life (+10 years)

Quick response

Low power consumption

Low-cost solution (no consumables, spare parts, no need to calibrate)

Excellent low-cost components determine low-cost sensors

19 "mounting bracket

Friendly UI

Data storage and logging

Scalable multipoint sampling system

Zero & wide range calibration

Sensor status self-test

specification

gas	Limited detection	Typical range
NH3, (H2O)ammonia***
condition with high temperature and high humidity	0.8 ppm	0 – 20, 50, 100, (500) ppm
HCl, (H2O) Hydrogen chloride ***
condition with high temperature and high humidity	0.8 ppm	0 – 50, 100, (500) ppm
NH3 ammonia	0.4 ppm	0 – 100 (500) ppm
CH4 methane	0.4 ppm	0 – 100 (40'000) ppm
CO2 carbon dioxide	4.0 ppm	0 – 1000 (300’000) ppm
* other gases customizable
Limited detection is under the condition of constant temperature pressure humidity (20°C, 1013 hPa、50 ± 1.5 % r.H.) A sudden change in system temperature causes a faster change in the detection limit than a change in concentration. Based on the spectrum, detection limit, as the high temperature increases and decreases, such as NH3 @ 190 ° C.
Accuracy	± 2%FS according to integral stability (temperature & pressure)
precision	According to gases
Zero drift	More than two hours per cycle -- within accuracy
Span drift	More than eight hours per cycle -- within accuracy
Maximum temperature error	< 0.1 reading/°C
Linearity/repeatability	< ± 2%
Cross interference	According to gas matrix or actual condition
Resolution	0.1 ppm
Refresh rate	1s (settable maximum120 s)
T90 time	2s (@flow rate3 L/min)
Ambient temperature compensation	-10 ~65°C (The smallest possible temperature fluctuation)
Maximum sample gas humidity	% absolute humidity, according to the operation condition, need to input calibration, through expansion compensation pressure, temperature or mixed gas concentration, customizable
Maximum sample volume	5(1)L/ min; 3L/min in calibration
Power supply	VAC220-230/115 50/60 Hz
Shell	19’’ Standard rack installation (depth: 500mm)
Explosion-proof grade	ExdII CT4, ExdII CT5,(customizable)
Gas connection	Swagelok Φ6 mm
Measuring method	In situ extraction
Sampling pump	Internal
Analog output	4-20 mA Current loop (no isolation)
port	Ethernet
Display	5.7” touch screen
Data storage	Via USB port