Signal’s ammonia gas analysers are designed for monitoring stack emissions, engine exhaust, ambient air monitoring and gas manufacturing applications.


Heated Chemiluminescent Detector (CLD) NOX analysers for NO/NO2/NOx measurement in engine emissions, combustion studies, process plant, Emission monitoring and medical gas production.

very low quenching from CO2 and H2O

electronic proportional flow controllers

special ozone generator uses air as feed gas

long life NOx converter (5 years)


Heated Tunable Diode Laser Spectroscopy (TDLS) based ammonia analyser for fast and accurate measurement in process & environmental monitoring, automotive and research applications.

Low detection limit 0.2ppm

Excellent gas selectivity

Large dynamic range

Long term stability

418 LUFT

Luft, R.F. capacitive bridge circuit detector for highly specific gas detection with advanced optical design allowing direct ambient measurement and a wide range choice with auto range (ppm to 100%).

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