Blog

Category: Pressure measurement & control

  • Flexboy single use bag
    Inflating single-use bioreactor bags using dual-valve pressure controllers

    Inflating single-use bioreactor bags using dual-valve pressure controllers Background: installing & inflating single-use vessels Single-use bioreactors (SUBs) offer key advantages including increased sterility and subsequently simpler and faster changeover between batches or campaigns. After the product is removed from the bioreactor, the single-use bioreactor bag can simply be removed from its holding container and disposed […]

  • PEM fuel cell stack testing
    Hydrogen fuel cell regulation and testing solutions

    Hydrogen fuel cell regulation and testing solutions Hydrogen fuel cells are a clean, environmentally friendly alternative to traditional combustion processes. While they show tremendous promise, fuel cell regulation is critical to achieve the process efficiency required for them to become truly viable as an alternative energy source. Precise and adaptive regulation of system pressures and […]

  • Maintaining cryogenic temperatures with pressure control

    Maintaining cryogenic temperatures with pressure control Cryogens are substances that liquefy at or below 120 K under standard pressure (760 Torr). They are commonly used in applications to keep liquefied substances at extremely cold temperatures, including cryopreservation, rocket propulsion, and medical imaging. Two of the most well-know cryogens are liquid nitrogen and helium. Liquid nitrogen […]

  • milky way galaxy
    Overcoming the challenges of high-speed aerodynamic tests using pressure control

    Overcoming the challenges of high-speed aerodynamic tests using pressure control Aerospace development and testing applications often require high flow rates to pressurize large volumes. One example is in gas reservoirs, where the reservoir must be pressurized prior to conducting high-speed aerodynamic tests. Application requirements A customer approached Alicat looking to pressurize a 200 L gas […]

  • milky way galaxy
    Accuracy and repeatability in valve leak test stands are key to space exploration

    Accuracy and repeatability in valve leak test stands are key to space exploration At Alicat, we work with customers on a variety of aerospace applications, projects, and experiments to keep pilots safe, put satellites into space, and launch rockets. We work closely with our customers to understand their problems and find straightforward solutions to ensure […]

  • Increasing vacuum deposition speed and stability with upstream pressure control

    Placing pressure control devices upstream of the chamber in vacuum coating applications saves time, cost, and increases accuracy in vacuum deposition tools.

  • Creating a vacuum using a dual valve pressure controller and the Venturi effect

    Creating a vacuum using a dual valve pressure controller and the Venturi effect One of our customers needed a way to control the pressure in a reaction chamber between -200 to +200 cmH2O. While the customer’s building had an ample supply of compressed air, they had no vacuum source. Without suction, they were unable to […]

  • close up of flowing gas
    Characterizing a filter with a pressure controller and mass flow meter

    Characterizing a filter with a pressure controller and mass flow meter A common application of Alicat’s mass flow and pressure devices is the characterization of a static device with pressure drop, such as a filter or static orifice. Filters and static orifices have pre-defined curves for the relationship between pressure and flow rate. A customer […]

  • close up of flowing gas
    Replacing pin gauge testing with a pressure controller and mass flow meter

    Replacing pin gauge testing with a pressure controller and mass flow meter One of our customers developed a go/no-go test where he would check the diameter of a female fitting to ensure proper engagement of the male counterpart. At the time, he was using a pin gauge to measure the diameter of the test part. […]

  • close up of flowing gas
    Fast, accurate leak testing using one flow controller

    Fast, accurate leak testing using one flow controller Looking for a fast, accurate way to leak test your system? Whisper low pressure drop controllers provide a convenient, single instrument solution. A standard controller may also work, however stable leakages are best detected when the meter generates minimal pressure drop (line pressure due to frictional resistance). […]