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Dew Point Duo vs. Condumax: Comparing Dewpoint Measurement Technologies in Natural Gas
Accurate dewpoint measurement is crucial in natural gas to maintain product quality and protect equipment. Here, we compare three technologies: HCD5000™ and DewPoint Duo™ by ZEGAZ Instruments, and Condumax II™ by Michell Instruments.
HCD5000™ and DewPoint Duo™ by ZEGAZ Instruments
ZEGAZ Instruments' HCD5000™ and DewPoint Duo™ leverage CEIRS™ technology (Chilled-Mirror Evanescent InfraRed Spectroscopy). This technology allows for precise, simultaneous measurement of hydrocarbon and water dew points. Key features include:
Spectroscopic Detection: CEIRS™ can distinguish between hydrocarbon and water dew points by analyzing their unique infrared absorption spectra. This means it avoids false readings from other contaminants or gasses present in the sample.
Low Maintenance: The devices use an optical crystal that is inert and resistant to contamination. This reduces maintenance costs and ensures consistent performance over time.
No Calibration Needed: Unlike other technologies, CEIRS™ does not require routine calibration, further reducing downtime and operational costs.
Energy Efficient: The design requires minimal power, reducing thermal stress and extending the life of the cooling system. This results in fewer breakdowns and less frequent need for part replacements.
Condumax II™ by Michell Instruments
The Condumax II™ employs a dark-spot light scattering technique to measure dew points and uses an electrochemical sensor for water content. Key features include:
Light Scattering Method: This method is sensitive to contaminants like glycol or methanol, which can cause false signals. It cannot distinguish between hydrocarbon dew points and other contaminants, leading to less reliable measurements. Furthermore, it requires a moisture dryer to eliminate interference from water dew point.
Higher Maintenance Needs: The metallic mirror in Condumax II™ can degrade over time due to exposure to corrosive substances like H2S and CO2. This results in higher maintenance costs, including frequent cleaning and calibration.
Separate Sensors for Water and Hydrocarbon: Condumax II™ uses different sensors for measuring hydrocarbon and water dew points, which increases complexity and the potential for errors. The moisture sensor is an outdated Aluminum Oxide sensor that is ill-suited for application in natural gas.
Dew Point Duo Vs. Condumax II™:
While both ZEGAZ Instruments and Michell Instruments offer solutions for dew point measurement in natural gas, the choice between them depends on the specific needs of your operation:
ZEGAZ Instruments' CEIRS™ Technology is based on a spectroscopic method that directly measures dew points with high accuracy and without interference from other substances. This makes it highly suitable for the simultaneous measurement of both hydrocarbon and water dew points in natural gas, without the need of any additional equipment. Its low maintenance needs and energy efficiency are significant advantages in terms of cost and reliability.
Michell Instruments' Condumax II™ relies on the old outdated light scattering method, which is more prone to false signals and requires more frequent maintenance. It also uses separate sensors for hydrocarbon and water measurements, adding complexity and potential costs.
Conclusion
For precision, reliability, and low maintenance, ZEGAZ's HCD5000™ and DewPoint Duo™ are more advanced options. Their CEIRS™ technology reduces false readings and upkeep, essential for maintaining gas quality and preventing costly issues.
Michell's Condumax II™, while widely used, may demand more frequent maintenance and calibration, especially in environments prone to contamination. Choosing the right technology is key to ensuring compliance, efficiency, and safety in natural gas operations.
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