laser gas detector，NUOAN

Products XT-TDLSCAN200

Features

XT-TDLSCAN200LINE-TYPE optical gas beam combustible gas detector

- Tunable Diode Laser Absorption Spectroscopy (TDLS) technology, line-of-sight beam measurement for extensive coverage. - Intelligent laser wavelength scanning; intelligent zero-point locking; zero false alarms; maintenance-free operation. - Strong infrared laser penetration capability; operates reliably in harsh environments (heavy rain, dense fog, dust, snow/ice). - Explosion-proof infrared remote control; enables on-site remote adjustment and calibration.

- Optical sensing principle, short response time, high detection accuracy, and long service lifetime. - Real-time optical path monitoring; eliminates lens condensation/icing; provides optical path blockage alerts. - On-site LED gas concentration display; LED status indicators; integrated audible & visual alarm.

- Precise laser wavelength matching, excellent gas selectivity with immunity to cross-interference from other gases. - Built-in reference gas cell; real-time intelligent laser status diagnostics; automatic calibration; high reliability. - Visible laser indication for easy installation and light adjustment at the transmitting and receiving terminals.

technical specification

DETECTION GAS	Methane
DETECTION PRINCIPLE	Tunable Diode Laser Absorption Spectroscopy (TDLAS)
DETECTION METHOD	Open-path
DETECTION RANGE	5~30m (near), 30~60m (medium), 60~100m (far)
MEASUREMENT RANGE	0~1 LEL·m, 0~5 LEL·m
RESOLUTION	0.01 LEL·m
ACCURACY	±5% Full Scale (F.S.)
RESPONSE TIME	T90 ≤ 3s
DISPLAY MODE	LCD digital display, LED indication
ALARM MODE	LED light alarm; compatible with explosion-proof sound and light alarm (optional)
ALARM THRESHOLD	Low Alarm: 0.5 LEL·m, High Alarm: 0.75 LEL·m (0~1 LEL·m) Low Alarm: 1 LEL·m, High Alarm: 2 LEL·m (0~5 LEL·m)
ADJUSTMENT	Infrared remote control
POWER SOURCE	24VDC (18VDC-30VDC)

POWER CONSUMPTION	TX < 10W (MAX), RX < 8W (MAX)
OUTPUT SIGNAL	4~20mA (three wires) 4~20mA+HART (optional) S485 Modbus (four wires) Three sets of relay switch output (2A 30V DC) 24V DC output (driving sound and light alarm) 4G/5G/NB-IoT/LORA wireless communication transmission (optional)
ELECTRICAL INTERFACE	Three interfaces, M25x1.5, NPT3/4″(F), NPT1/2″(F)
AMBIENT TEMPERATURE	-40°C to +70°C
RELATIVE HUMIDITY	0~99%RH (non-condensing)
SENSOR LIFESPAN	≥ 10 years
EXPLOSION-PROOF MARKING	Ex db IIC T6 Gb/ Ex tb ⅢC T80°C Db
PROTECTION LEVEL	IP68
HOUSING MATERIAL	316 Stainless Steel
DIMENSIONS	253.6mm x 101mm x 151mm (LxWxH)
WEIGHT	6,380g (TX); 6,430g (RX)

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