TDLAS200 Laser Methane Sensor
1.Introduction
The laser gas telemetry module is manufactured based on laser
absorption spectroscopy technology. It emits a laser beam of a
specific wavelength to detect whether there is a target gas in the
optical path range of the laser, thereby obtaining the
concentration of the target gas.
2.Features
- High sensitivity, only responds to the target gas
- Built-in reference cell, can be automatically calibrated
- Easy to integrate, digital interface directly outputs status and
concentration
3.Measuring Principle
"Methane molecules absorb light of a specific wavelength"
--Molecular absorption spectrum
"The amount of light absorbed by a transparent medium (methane gas
mass) is proportional to the thickness and concentration of the gas
mass" --Beer-Lambert's law
According to the above physical principles, a beam of light of a
specific wavelength can be used to penetrate the leaking methane
gas mass. According to the degree of weakening of the beam, the
concentration of methane in the gas mass can be measured, and it
only responds to methane (unique selectivity).
Using a detection cell with multiple reflections and allowing the
laser to repeatedly pass through the gas being measured can
multiply the detection sensitivity.
4.Technical Parameters
Product model | TDLAS200 |
Detection object | Methane (CH4) |
Measurement principle | Laser absorption spectrum (TDLAS) |
Static detection limit | 0.5ppm@25℃10SPS (typical value, please contact us for details) |
Volume | 53ml |
Fastest response time | 0.1s |
Measurement range | 0~5000ppm |
Measurement deviation | 0-200ppm true value +/-2ppm 200-1000ppm true value +/-1% 1000-5000ppm true value +/-2% |
12hrs drift | +/-1.5ppm |
Operating temperature | -20~50℃ |
Power supply | 5-12VDC 1W (typical) 3W (maximum) |
Dimensions and weight | 115×59×38mm |
Gas interface | Pagoda direct M-5AU-4 |
Fastest response time | Detection time 0.1s |
*1 Please ensure that the power input voltage of the module is not
less than 5V
*2 Pump selection recommendation <500ml/min
5.Dimensions of the detection module
Dimensions of the detection module host: 115×59×38mm (excluding
cables and gas connectors)