The SY-GLD200D open laser gas telemetry instrument consists of a laser transceiver and a reflection device. Based on laser absorption spectroscopy technology, it monitors the concentration of methane gas in real-time online between the laser transceiver and the reflection device, in order to detect gas leaks in a timely manner and provide warnings.

Product features of open laser gas telemetry instrument:
◆ Convenient access
Using standard communication protocols, it is easy to communicate with the upper computer, control system, and auxiliary equipment
◆ Long monitoring distance
Capable of monitoring 200 meters in a straight line
◆ Safe and reliable
Adopting explosion-proof design

Working principle of open laser gas telemetry instrument:
When the instrument is working, the transmitting and receiving device emits a detection laser within a specific wavelength range (the center wavelength is also different for different gases being measured) to the outside. The detection laser encounters the reflecting device, and some of the laser returns to the detection unit of the transmitting and receiving device. In the beam path, if there is a gas mass formed by the leakage of the measured gas, the gas mass will absorb the detection laser. The ratio of unabsorbed light to absorbed light is proportional to the concentration of the gas mass, and the concentration of the gas mass can be inferred by calculating this ratio.

Technical parameters of open laser gas telemetry instrument:
◆ Detecting gas methane (CH4)
Detection principle: Laser absorption spectroscopy technology
Detection laser power ≤ 10mW
◆ Detection of laser safety Class I laser, eye safety
Detection distance: 0-10m/0-100m/0-200m
Detection range: 0-100% LEL/0-20000ppm · m
Detection error within ± 3%/± 5%
Output mode RS485 or 4-20mA; Beam obstruction or weak signal: 3mA
Response time<1 second
The shell material comes standard with 304 stainless steel (optional 316L)
◆ Cable interface NPT3/4
◆ Input voltage DC 24V
◆ Maximum current 200mA
◆ Electrical connection comprehensive cable
◆ Environmental temperature -40 ℃~+70 ℃
◆ Environmental humidity 0~90% RH, no condensation
Installation method: wall mounted or 4 "riser installation
Explosion proof grade Ex d IIC T6 Gb
◆ Protection level IP68

Application scope of open laser gas telemetry instrument:
It can be widely used in workplaces that require monitoring of natural gas leaks, such as petroleum, petrochemical, natural gas, chemical, mining, and power plants. Suitable for Zone 1 and Zone 2 in explosive gas environments and Zone A20, A21, and A22 in explosive dust environments.