Flow Meter Accuracy: Demystifying Spec Sheets

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Accuracy is the very first specification listed on a mass flow meter spec sheet because measuring flow is the whole point. But flow meter accuracy specs can be confusing, and that can lead to difficulty in evaluating the equivalence of options. Alicat’s standard accuracy specification is plus or minus 0.8% of reading plus 0.2% of full scale. Add them together, and they equal 1% at full scale. Other manufacturers list only a percent of full scale, or some other ...

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Faster Flow Calibration for Gas Analyzer Audits

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Alicat’s “Whisper” series portable flow meters reduce the time it takes to conduct flow calibrations and audits of gas analyzers and gas dilution calibrators used in ambient air monitoring and other applications.

Auditing Gas Analyzers and Gas Dilution Calibrators

Flow calibrating a gas analyzer can consume your entire day. Most dreaded are low flow calibrations, which can take an hour or two alone. You watch the bubble or piston slowly rise to the top of the positive displacement tube at a pace of 10 ...

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How to choose meters and controllers for pressure or flow

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Alicat devices are available in thousands of possible configurations to ensure that the instrument you receive is the right fit for your application. In this first of a new series of blog posts centered on our available instrument options, we will be taking you through the main product categories in greater detail.

Gas Flow Measurement and Control

Alicat low-flow mass flow meter

If you are looking for precision gas flow instrumentation, then we’ve got ...

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LabVIEW Pressure Control Makes for Easy Medical Device Flow Characterization

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LDIT-logoLD Integrated Technologies is a consulting firm that specializes in system integration and automated testing projects. The firm often develops custom hardware, circuit design, embedded firmware and software to meet the needs of their customers. LDIT focuses especially on integration projects within the medical device, aerospace, manufacturing, automotive and oil and gas industries.

LabVIEW Pressure Control Makes for Easy Medical Device Flow Characterization

LD Integrated Technologies was working with a ...

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New LabVIEW Drivers for Alicat Instruments

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Talking to your Alicat products digitally has just gotten easier. Whether you’re integrating an Alicat into a LabVIEW dashboard, or you’re using our Flow Vision software to log, control or optimize your flows and mixes, the new updates available on the download pages are compatible with our new Gas Select™ 6v0 firmware update.

Alicat Scientific has released updated LabVIEW instrument drivers for its mass flow meters, flow controllers, and pressure controllers. These drivers are backwards compatible for older ...

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BASIS MFCs for OEMs now control to 20 SLPM

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Compact, versatile and accurate BASIS mass flow controllers are ideal for original equipment manufacturing and process integration applications buying in volume. Now the product line includes ranges of 100 sccm, 1000 sccm and the new 20 SLPM model, each with digital communications options.

With the expanded range the new model provides, BASIS can now fit into more applications, such as sample dilution, sparging into liquids, and additional gas mixing systems.

The BASIS mass flow controller family was specifically designed to provide a ...

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Flow range matters: it’s the speed limit

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Knowing the correct flow range for your application will help you select the best meter or controller for your system.

The flow or pressure device’s full scale should match the largest flow rate that you need to be able to measure. If your device has a higher or lower range than is required by your system, you will be unable to acquire a proper measurement.

In some applications the flow range is too wide for one device to handle. This is ...

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What’s so special about true mass?

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Volumetric vs. standard volumetric vs. true mass

“Measuring flow rates” of gases and other fluids means different things, depending:

  • volumetric rate: the space the material consumes, seen as “volume unit per unit of time” (e.g., liters per minute)
  • molar mass flow rate: widely abbreviated to “mass flow” this is the number of molecules per volume under specific conditions, expressed as “standardized volume units per unit of time—under normalized conditions” (e.g., standard liters per minute, or liters normal per minute)
  • true mass flow: measuring the ...
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New firmware release: better control, faster data, and new features

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One way an Alicat meter or controller stands out from the rest is how much control you have over what it does, and how it does it. We pioneered user flexibility with our input screen. Now, you’ve gained an added level of control: user-selectable engineering units, among other things. With the new 6Vx firmware update, you’ll notice this and other improvements on new and updated instruments.

Change units without a factory visit

That’s right, you can switch units between several types! You’ll ...

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Totalizers help limit greenhouse emissions

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Manufacturers of electrical power systems love Sulfur Hexafluoride (SF6): it’s a colorless, odorless gas which is chemically non-toxic to humans and animals, and has great usefulness in electrical insulation and arc prevention. Fill an electrical distribution switch box with SF6 and seal it, and you’ve increased the safety and longevity of the equipment.
Environmentally, though, SF6 has a drawback: while it doesn’t deplete ozone, it is the strongest greenhouse gas identified by the Intergovernmental Panel on Climate Change—by mass, ...

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