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tfs tunable filter spectrometer multi-compound trace gas monitor
Online Gas Analyzer, Multi-component, MultiGas™ TFS™ Monitor


  • Measurement Technique
    IR absorption using Tunable Filter Spectrometry
  • Gasses Measured
    All IR active gases
  • Gas Cell Pathlength
    10 meter, with proprietary high throughput folded path design
  • Update rate
    1 - 120 seconds (software configurable)
  • Calibration
    Factory calibrated; no recalibration required
  • Zero Drift
    <15 ppb per day (typical)
  • Optics Purge Flow
    0.2 L/min of dry nitrogen or CO2 - free clean, dry air with dewpoint below -70°C
  • Pressure Transducer
    MKS Baratron® capacitance manometer
  • Purge Connection
    1/8 inch Swagelok®
  • Dimensions
    19 in. W x 7 in. H x 25 in. D
  • Installation
    19 inch rack mount chassis
  • Power Requirements
    120 VAC, 60 Hz, 3.3A / 230 VAC, 50 Hz, 1.7A
  • Weight
    35 lbs. (16kg)
  • Sample Temperature
    10 - 50°C (nominal)
  • Sample Flow
    0.5 L/min (nominal)
  • Sample Pressure
    1 atm ±0.1 (nominal)
  • Gas Cell Construction
    Nickel coated Al
  • Fittings
    4 Swagelok VCR®
  • Tubing
    ¼ inch stainless steel
  • Mirrors
    Nickel plated aluminum substrate, with rugged gold coating
  • Windows
  • O-rings
  • Communication Protocol
    Modbus TCP/IP or Modbus RS-485
  • Analog Output
    Four, 4 – 20 mA


All-optical TFS Monitor

The all-optical MultiGas TFS Monitor provides an alternative to the traditional analyzer technologies for gas concentration measurement.

Permanently Calibrated

The analyzer calibration is permanent, reducing the need for costly reference gas mixtures. The calibration stability is guaranteed through the use of an advanced spectral processing algorithm that compensates for baseline variations.

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