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LasIR™ Fence Line Monitoring Gas Analyzer

LasIR™ Laser-based Fence Line Gas Monitor for Emissions Monitoring

Unisearch LasIRTM Gas Analyzer is a continuous monitor designed to measure open path both compliance The Controller uses a near infrared (NIR) Tunable Diode Laser Absorption Spectrometer System utilizing a single mode laser mounted in a thermoelectric cooler for unsurpassed accuracy and performance.

Since the spectral purity of the laser is high and the selected absorption feature is unique, measurements can be made free of interferences from any other gas. A Windows based software package displays the data on either a Host laptop PC or the client’s existing data acquisition system.


Have questions? Call +61 2 9622 6327

  • TDL (Tunable Diode Laser) technology for unmatched accuracy & reliability
  • High sensitivity ppb to percent level measurements
  • One analyzer can be used for up to 16 measurement points
  • Moisture can be added as a second channel for many species
  • Multi-component​ measurements are available for certain species, i.e. CO/CO2, NH3​/HCN, CH4/C2H6​, H2S/CO2/H2​O
  • Performance designed Compliance Monitor
  • Gas sampling/conditioning not required
  • Corrosive/toxic applications
  • Calibration not required
  • Inline/Offline Audit option available
  • Exceeds US-EPA CEMS Regulation requirements
  • MACT & MATS  PS18 Compliant
  • Boiler MACT O2 and CO Compliance
  • Approved Zero & Span Calibration checks
  • Extremely Fast (<1 second) response time
  • Compact and simple to install
  • Ambient conditions from 40°C to 70°C
  • Operates in high dust/moisture applications
  • Laser located in controller allowing for simple signal control and diagnostic access
  • Off Stack/Process extractive option
  • Hazardous Area Div I & II options
LaserNear IR tunable diode laser Telecommunication grade lasers for longevity, reliability and availability
Detection Limitssub-ppmv to % levels depending on species and application.
Consult the factory for your specific application.
CalibrationFactory Test results sent with every unit Internal reference cell, external portable audit module, or in‐line flow through cell
Dynamic Range5 orders of magnitude
Data StorageInternal storage & External storage via Ethernet, RS232 or MODBUS-TCP/RTU
DimensionsOpen Path Telescope:
7″(W) x 10″(H) x 14″(L)
12″(W) x 12”(H) x 8″(D)
Response Time< 1 second
Environment Conditions‐10°C to +50°C,
5 – 100% RH,
800 – 1,200 mbar
Outputs and NetworkingUp to thirty-two 4‐20 mA Analog Outputs, Ethernet, MODBUS-TCP/RTU, RS232, Six Dry-Contact NC & NO Status Relays
Data Logging and Displaying SoftwareLasIRView (with Data Review and Statistical Analysis)
Power Supply+12 VDC; 1A
(100 – 240 VAC @50‐60Hz to +12 VDC adapter supplied)
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