QuadraTherm® 640i Air Mass Flow Meter

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QuadraTherm® 640i Air Mass Flow Meter

SIERRA INSTRUMENTS

 

QuadraTherm  640i Insertion Thermal Mass Flow Meter

 

QuadraTherm 640i Insertion Thermal Mass Flow Meter Overview

Industry's Most Accurate Gas Thermal Insertion Mass Flow Meters

The QuadraTherm® 640i is the most accurate insertion-probe thermal mass flow meter for gas mass flow rate measurement on the market today, achieving gas mass flow rate accuracy never before possible, +/- 0.75% of reading above 50% of full scale. The QuadraTherm 640i gas mass flow meter marks an accuracy breakthrough in thermal dispersion technology achieving extreme precision with "percent of reading" accuracy, which for the first time rivals accuracies of Coriolis technology for measuring gas mass flow rate.

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More Thermal mass Flowmeter Videos

Thermal

Thermal Mass Flow Meters Offer Oil & Gas Companies Lowest Cost of Ownership

Tuning Your Boiler for EPA Boiler MACT Compliance

The EPA’s Boiler MACT (Maximum Achievable Control Technology) regulations are heating up. Boiler MACT is an EPA rule to limit hazardous air pollutants (HAP) from commercial and industrial boilers and process heaters. Originally published in 2011 as a mandate driven by the Clean Air Act...

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Thermal Mass Flow Meters Offer Oil & Gas Companies Lowest Cost of Ownership

Thermal Mass Flow Meters Offer Oil & Gas Companies Lowest Cost of Ownership

The Wall Street Journal recently reported that oil prices have hit a rock bottom $40 a barrel, the lowest since 2009. How does this affect the oil companies? Well, the consumer gets the benefit of the low pump price which does loosen discretionary spending, but the oil & gas companies are hurting-spending less money on capital investment due to tightened budgets.

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Why Dry Sensor Design Is Key for Stability, Accuracy and In-Situ Validation

Why Dry Sensor Design Is Key for Stability, Accuracy and In-Situ Validation

Designing a stable sensor that will last over the lifetime of your thermal mass flow meter is the holy grail in thermal mass flow meter design. The truth is that most flow meter manufacturers use a "wet" sensor design, filled with epoxies and cements. As conditions in your application change, the sensor is heated and cooled over time, expanding and contracting the cement inside the sensor—and you know what happens to cement as it is repeatedly heated and then cooled, it shifts and cracks. This "wet" sensor design greatly compromises the accuracy of the thermal sensor over time.

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Principle of Operations

NEW Video Animation: How Do Thermal Mass Flowmeters Work?

NEW Video Animation: How Do Thermal Mass Flowmeters Work?

As if your were actor Dennis Quaid in the popular 1987 movie Innerspace, journey inside the pipe to learn the operational principle of thermal mass flow technology and see, from a molecules perspective, why thermal flow meters have become extremely popular due to high accuracy, no moving parts, negligible pressure drop, sensitive direct mass flow measurement with high turndown (up to 1000 to 1) giving ability to measure very low to very high flows with the same instrument.

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Natural Gas Measurement

Part 1: Challenges with Submetering Natural Gas

Part 1: Challenges with Submetering Natural Gas

In my latest article in Gases & Instrumentation magazine, I explore energy management as it relates to the natural gas industry. Natural gas exists in abundance in this country, with production expected to increase 44 percent by 2040. With such unprecedented growth in production of this natural resource, utility companies must focus on providing the most accurate gas billing possible.

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Qmix

For the First Time, Field-Adjust For Gas Composition Changes, Retain Accuracy, Save Time and Money

For the First Time, Field-Adjust For Gas Composition Changes, Retain Accuracy, Save Time and Money

For the first time, customers can adjust their gas composition in the field on thermal flow meters to solve EPA reporting challenges. When gas composition changes, typical thermal meters must be sent back to the factory to be re-calibrated in order to maintain required accuracy levels.  All of this is a costly, time consuming endevour.

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If gas composition changes, field-adjust to maintain flow meter accuracy?

If gas composition changes, field-adjust to maintain flow meter accuracy?

Changes in gas composition cut into productivity in the field, exactly when you need accuracy in flow meter measurement the most. But what if you could retain that precision, even when those changes occur? Now you can do just that with qMix Software.  If your gas composition changes over time, you can now quickly field-adjust the QuadraTherm thermal mass flow meter. You avoid the expense of sending the instrument back to the factory for recalibration by reprogramming it in the field to assure optimum accuracy.

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Insitu Calibration

The Truth About In-Situ Calibration Validation of Thermal Flowmeters

The Truth About In-Situ Calibration Validation of Thermal Flowmeters

In-situ calibration validation is one of the great benefits of thermal mass flow technology. This NEW video reviews in-situ calibration validation and details how thermal sensor stability is the only way a calibration validation is actually valid! Get the truth about in-situ calibration so you can make informed decisions. Watch the video now! For a more detailed look at five in-situ calibration validation approaches, and how each method has varying cost and complexity, download our in-depth white paper, In-Situ Calibration, now.

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Tech Note

Flare Gas & Combuster Gas Measurement

Flare Gas & Combuster Gas Measurement

It’s a fact oil wells almost always produce natural gas along with the petroleum. Nine times out of ten the excess gas (typically hydrocarbons) is flared off or simply vented as-is during upset conditions in the process. The environmental impacts of "flaring" this excess gas into our atmosphere has resulted in government regulations like 40 CFR Part 60 Subpart OOOO (also known as Quad O) as well as new RSR MACT rule for refineries requiring oil & gas companies to report the flare gas emitted. Traditionally, in upstream oil and gas applications orifice plates and turbine meters have been used to measure the flare gas to comply with these government regulations.

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Flare Gas Mass Flow Metering

Innovations Promise More Economical Choices

Innovations Promise More Economical Choices

As the drive towards energy independence in the United States continues at full speed, oil and gas companies are turning to hydraulic fracturing to increase production. Increasingly stringent state and national regulations for flare gas in particular now require the installation of mass flow measurement instruments to measure waste and excess gases burned off as a result of the hydraulic fracturing process. For gas wells alone, the EPA estimates that the cost of compliance will rise to$754 million per year by 2015.1

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