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Category: Measurement and calibration applications

  • Appnote: Vent gas & green house gas emissions measurement

    Portable gas flow meters are use multiple flow sensors to capture pressure, temperature, and flow data quickly at the source.

  • Mass flow calibration where you need it
    A practical guide to flow calibration success

    This is an introductory guide to flow calibration success. It includes annual recalibration FAQ, calibration types, understanding calibration specifications, and relevant articles on the topic. Annual recalibration FAQ This FAQ shows the benefits of annual recalibration and answers your questions about our calibration solutions. Calibration types: NIST, ISO 17025, and A2LA We often receive inquiries […]

  • Understanding Alicat calibration and accuracy specifications

    Understanding Alicat calibration and accuracy specifications Each Alicat device comes with a NIST-traceable Certificate of Calibration, guaranteeing that its calibration can be traced back to the primary SI standards, such as mass and pressure. As a result, an Alicat device will output mass flow rates that fall within the same accuracy range as measurements obtained […]

  • Why recalibrate your Alicat device annually?

    To ensure maximum flow measurement accuracy, we recommend that Alicat meters and controllers are recalibrated annually.

  • Appnote: In-house check of gas chromatograph operation

    In-house check of gas chromatograph operation Gas chromatographs (GCs) detect materials at molecular level by preparing a sample of the material that is “carried” on a gas stream into the GC. The carrier gas flow stream is sent into small capillary flow tubes and then into detectors to sense and quantify the suspected materials. These […]

  • Appnote: Calibration of flow controllers for air canister sampling

    Calibration of flow controllers for air canister sampling Canisters built for air sampling draw air into them using vacuum and passive flow control. With no more of a user interface than a simple screw adjustment, the integrated flow controllers require connection to a volumetric flow meter to establish their test flow rates. The challenge in […]

  • Appnote: Measuring bidirectional air flow from furnace bellows

    Measuring bidirectional air flow from furnace bellows The flow meter is measuring the air flow to and from a contained furnace to help in maintaining consistent temperatures. Using the bi-directional meter allows for the replacement of two individual flow meters and all the associated plumbing. The temperature and pressure signals are also incorporated as safety […]

  • Appnote: Flame and burner monitoring

    Flame and burner monitoring The flow meter is used to measure the flow of fuels such as Propane, Butane, Acetylene, or Methane (Natural Gas) to a burner or flame head. Oxygen or Air flow can also be easily measured in the same device. Mass flow measurements are used to determine and regulate the theoretical energy […]

  • Appnote: Bioreactor outgassing

    Bioreactor outgassing Research projects involving isolated chambers with decomposing organic components often use rotameters: the gas is released from the chamber and metered into a gas analyzer (often a mass spectrometer) to determine the actual constituents of the gas. This diagram demonstrates how an Alicat micro-flow mass meter (MFM) can be used instead of a […]

  • Verification, validation and calibration

    Verification, validation and calibration Verification, validation and calibration are different but interrelated processes that are often confused. Ask three people what these terms mean, and you will get three different answers. At a basic level, the three terms may be defined as follows: Calibration ensures the measurement accuracy of an instrument compared to an known […]

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