Technical Resources: Articles, Tech Notes, etc.

Technical Notes by ZEGAZ Instruments

Manual Chilled-mirror vs ZEGAZ CEIRS™ Technology

This note compares and contrasts manual chilled-mirrors with CEIRS™ Technology.

 
TDLAS vs ZEGAZ CEIRS™ Technology

This note compares TDLAS and CEIRS™ for measurement of moisture in natural gas.

Why Calibrations are not needed for ZEGAZ Dewpoint analyzers

This note compares TDLAS and CEIRS™ for measurement of moisture in natural gas.

At What Pressure Should the HC Dew Point be Measured?

This note discusses the two different pressure regions where hydrocarbon dew point is measured at and the pros and cons of each approach.

The Fallacy of Calculating Hydrocarbon DewPoints

This note explain why using a GC-based calculation of hydrocarbon dew points carries significant errors and cannot be used reliably to determine the hydrocarbon dew point in natural gas.

Presentations by ZEGAZ Instruments

Comparison of Common Water Measurement Technologies

This slide presentation compares the most common methods of detection of moisture in natural gas, including ceramic oxides, TDLAS, quartz crystal, and chilled-mirrors.

 
 
 
 
 
 
Measuring or Calculating Phase Diagrams?

This slide presentation discusses the significant errors embedded in calculations of phase diagrams.  Experimental data comparing empirical measurements and calculations are presented.

 
 
 
 
 
 

Typical Natural Gas Dew Point Specifications

A Typical Specification for Pipeline Natural Gas

This page show the typical specification for pipeline natural gas.  It includes specifications for hydrocarbon dew point.

Interstate Natural Gas—Quality Specifications & Interchangability

A comprehensive article about Interstate Natural Gas Quality Specification in US

Typical BioGas Specifications

Specifications for BioGas.

American BioGas Council Recommendations

The document lists the purity recommendations for American BioGas Council.

 

Useful Industry Articles About Dew Point Measurement

Hydrocarbon Dew Point Measurement and Model Evaluation of Synthetic and Real Natural Gases
Article about various methods for controlling hydrocarbon dew point
 
Measuring Hydrocarbon Dew Points
Article about measuring dew points and theoretical calculations
 
Controlling the hydrocarbon dew point of pipeline gas
Article about various methods for controlling hydrocarbon dew point
 
The Need For Accurate Hydrocarbon Dew Point Determination
Article discusses determination of hydrocarbon dew point and some of the errors embedded in its calculation from GC analysis
Measurement and Prediction of Hydrocarbon Dew Points of Synthetic Natural Gas Mixtures
Article discusses determination of hydrocarbon dew point and some of the errors embedded in its calculation from GC analysis
 

Manufacturers and Consulting Firms in Dew Point Reduction Processes

List of companies involved in production of dew point reduction equipment or consulting engineering firms.  This list is for informational purposes only and does not indicate an endorsement of the following companies by ZEGAZ Instruments.  Let us know if you would like to be added to this list.

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Useful Links

How to specify a Hydrocarbon Dew Point Analyzer

This note explain how to best specify a hydrocarbon dew point analyzer