The On-line Energy Meas urement of Natural Gas New Technologies |
|---|
| Floris Huijsmans, Johan Bats |
- Abstract:
- Since the early eighties, Process Gas Chromatographs have been the de facto standard for on-line energy measurement. Being a robust, accurate and widely accepted technology, it is however relatively slow and therefore not suited for control applications.
Instromet recently developed both a new generation of Process Gas Chromatographs, and a fast Correlative Energy Meter. This allows to serve the complete on-line energy market, from the accountable measurement systems requiring ultimate precision to control applications with the accent on speed of response.
The EnCal 3000 represents a new era in Process Gas Chromatography for natural gas. The combination of MEMS based analytical components with narrow-bore capillary columns improves analytical performance, analysis time, utility consumption and overall dimensions with a factor 3 to 5 compared to systems based on conventional technology.
The EnSonic is a Correlative Energy Meter, calculating the on-line gas properties based on only 3 input parameters using a patented correlative algorithm. The continuous input of the Velocity of Sound at elevated pressure (VoSH) and at near-atmospheric conditions (VoSL), together with the measurement of the CO2 concentration, provides the base for the on-line assessment of all gas properties within seconds, at an accuracy level comparable to conventional Process Gas Chromatographs.
The paper explains the 2 technologies in detail with extensive field test results, and gives examples of typical applications for both devices. - Download:
- IMEKO-TC9-2004-082.pdf
- DOI:
- -