The Endress+Hauser Group

Media center


Your career with Endress+Hauser

Product tools

Contact Information


E-direct complements our traditional offering by providing you with a quick, effective way to purchase easy-to-configure, entry-level instrumentation.


Natural Gas

Reliable and robust gas analysis solutions to continuously ensure pipeline safety

SpectraSensors tunable diode laser absorption spectroscopy (TDLAS) analyzers measure transfer.

Moisture H2O in natural gas pipelines

Low moisture content is critical to meet quality specifications and to protect pipelines from corrosion. Measuring range starting from 0 to 50 ppmv.

Traditional approach

High levels of solid and liquid contaminants at varying concentrations (glycol, methanol, compressor oil, sulfur compounds) challenge measurements of moisture

  • Sensors relying on the adsorption onto sensitive surfaces have wet-up or dry-down delays

  • Contaminants may destroy some moisture sensors

  • Cross-interference affects moisture readings

  • Al2O3 sensors are slow and subject to other components in natural gas

Our solution

SpectraSensors, Tunable Diode Laser – Absorption Spectroscopy (TDLAS):
The rugged solution used in natural gas pipelines with very little maintenance, no interference, and with no detrimental effects from glycol, methanol, amines, H2S, moisture slugs, etc.

Find detailed application notes on gas analysis solutions

Typical analytes and measuring ranges

  • Analyte: H2S - Range: 0-10 to 0-5000 ppmv

  • Analyte: H2O - Range: 0-50 to 0-2500 ppmv

  • Analyte: CO2 - Range: 0-5 to 0-20%

Unique benefit

  • Accurate, non-contact measurement with no wet-up or dry-down delays, in real-time

  • Calibration-free, no routine maintenance

  • Independent from glycol, methanol or amine

  • No consumables

Contact us about Natural Gas Solutions

  • Monitoring contaminants, e.g. H2S, H2O, to protect pipelines from corrosion and blockage

    SpectraSensors, Inc with its TDLAS analyzers was acquired by Endress+Hauser in 2012. Kaiser Optical Systems was also acquired bringing the Raman-based Optograf spectrometer to the portfolio.

  • Reliable and robust gas analysis solutions to continuously ensure pipeline safety

Success stories


Endress+Hauser Inc.
2350 Endress Place Greenwood , IN 46143 United States
Tel.: 888-363-7377
Tel.: 888-ENDRESS
Tel.: 317-535-7138
Fax: 317-535-8498
Send email