TVOC AMBIENT ANALYSER

The LasIR™ is a laser-based fence line gas analyzer designed for continuous, open-path emissions monitoring. It employs near-infrared tunable diode laser (TDL) absorption spectroscopy housed in a robust controller with thermoelectric cooling, allowing high sensitivity, selectivity, and rapid response. Because of its optical path configuration, it can monitor gases in situ without requiring extractive sampling or conditioning, making it especially suited for ambient and fence-line monitoring applications.

Features & Benefits:

Tunable Diode Laser (TDL) technology for high accuracy and reliability
Detects gas concentrations from sub-ppmv up to percent levels, depending on target species and application
Very fast response time (< 1 second) for real-time monitoring
Designed as a compliance monitor: minimal interference, no need for sample conditioning
Multi-component capability for certain gas combinations (e.g. CO/CO₂, NH₃/HCN, CH₄/C₂H₆, H₂S/CO₂/H₂O)
Supports up to sixteen measurement points with one analyzer system
Optional second channel for moisture measurement
Internal calibration reference cell; optional external audit module or flow-through cell for verification
Exceeds relevant US-EPA CEMS requirements; compliant with MACT & MATS, PS-18, Boiler MACT etc.
Hazardous Area (Div I & II) options; suitable for high dust or moisture environments

Parameter	Detail
Measurement Principle	Near-IR Tunable Diode Laser Absorption Spectroscopy (TDL)
Typical Applications	Fence line emissions, ambient air monitoring, compliance tracking
Detection Limits	Sub-ppmv up to percent levels (species & path dependent)
Dynamic Range	Spans roughly 5 orders of magnitude
Response Time	Less than 1 second
Sample Path / Open Path Dimensions	Open Path Telescope: 7″ W × 10″ H × 14″ L; Retro-Reflector: 12″ W × 12″ H × 8″ D
Environmental Operating Conditions	-10°C to +50°C, 5–100% RH, 800–1200 mbar
Outputs / Communications	Up to 32 × 4-20 mA analog outputs; Ethernet; MODBUS-TCP/RTU; RS-232; Dry-contact status relays (NC/NO)
Data Storage / Networking	Internal storage; external via Ethernet / RS-232 / MODBUS; software for data review & statistical analysis (LasIRView)
Power Supply	+12 VDC @ ~1 A; Adapter supplied for 100–240 VAC to 12 VDC (50/60 Hz)
Operating Modes	Auto-ranging / manual range selectable; remote range switching possible
Calibration Options	Factory test results; internal reference cell; optional external or inline audit module
Mass / Weight	Approx. 19 kg (≈ 41.9 lb)
Certifications / Compliance	U.S. EPA CEMS, MACT, MATS; PS-18, Boiler MACT compliance; built-in zero & span calibration checks