The Alicat Blog

Alicat Mass, Flow and Pressure Instruments Now Offer EtherCAT Protocol

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Alicat Scientific’s line of mass flow, pressure and liquid instruments can now be ordered with the EtherCAT protocol. Users of Beckhoff PLCs for industrial automation can now connect Alicat devices with the high-speed and robust EtherCAT protocol.

In the chemical, medical, manufacturing and power industries, Alicat instruments rapidly and precisely monitor and control critical process parameters. The speed and reliability of Alicat devices are particularly well suited to vacuum coating processes, such as Atomic Layer Deposition and Chemical Vapor Deposition. All ...

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EtherCAT in vacuum and industrial applications

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Manufacturers of Vacuum Deposition systems are increasingly turning to software-based industrial PLCs. These PLCs offer a variety of benefits, including greater productivity, precision performance, cost savings, speed-to-market and the ability to add processes like motion control and machine vision in the future.

Because there are so many different Ethernet fieldbus standards available, it’s difficult to choose one. Adopting the wrong standard can mean unnecessary cost and sacrificing competitive advantage due to slower performance.

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Precision & Repeatability in Fiber Optic Manufacturing

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In the optical fiber industry, manufacturers’ needs center around precision and repeatability. It’s somewhat analogous to archery, where accuracy means hitting the bullseye. If you can hit the same point on the target every time, that’s precision. Repeatability is being able to demonstrate the same precision every time you walk up to the line and shoot. Let’s take a look at how optical fibers are manufactured, and where Alicat fits into the picture.

How Optical Fibers Are Manufactured

The fiber optic manufacturing ...

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About that Pressure Control Loop feature? It’s so cool

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As an applications engineer at Alicat Scientific, I talk to people in every industry all over the world and learn about how they use our product. One of the most interesting applications I’ve seen is in a chemical reactor, where our mass flow controllers are used to control pressure and make sure that processes are repeatable.

Our flow controllers can be set to control on pressure while measuring mass flow. Our mass flow controllers measure volumetric flow rate, mass ...

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Customizing mass flow and pressure controllers: brilliant to baroque

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Many customers, even our most loyal ones, don’t realize that we customize just about EVERY Alicat instrument order. That’s because all our instruments are built when you order, and configured and programmed to best suit the application and conditions for which you’re buying them. Customizations can range from having a meter automatically tare itself every 24 hours, to engineering new limits of what our pressure controllers can handle! To give you an idea of how we work out your new ...

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How can I take advantage of PID Tuning?

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Alicat flow and pressure controllers use closed loop control algorithms to achieve their highest degree of control stability. The algorithms are a mathematical relationship that dictates the response of the valve to the flow or pressure conditions. It assesses the difference between the set point and the process value—whether it be mass flow, volumetric flow, or pressure—as an error. The degree of error determines what kind of input to send to the valve, reaching the correct value in the quickest ...

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Alicat Mass Flow Controllers Powers MDC’s XpressStick Gas Delivery Module

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Gas connection module benefits from Alicat’s MCE’s high precision flow control

Alicat Scientific’s MCE mass flow controllers have been integrated into MDC Vacuum Products’ XpressStick™ MFC Gas Stick. With precision control of gas flows of up to 20SLPM and onboard display, Alicat’s MCE provides gas programming functionality to the gas connection module, which links pressurized gas inputs to vacuum chambers.

The Alicat MCE accurately controls gas flow rates as low as 0-0.5 sccm full scale or as high as 0-20 slpm ...

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Modbus TCP/IP Added to Alicat Industrial Automation Protocol Options

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A full range of communication protocols to integrate Alicat mass flow and pressure instruments into process scheme

Modbus TCP/IP compatibility has been added to Alicat Scientific’s line of mass flow, pressure, and liquid instrumentation. The new option allows PLCs running the Modbus industrial automation protocol to connect to Alicat instruments over Ethernet cable.

Modbus edited_800Alicat instruments rapidly and precisely monitor and control critical process parameters in chemical, medical, manufacturing and power industries. All ...

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Where’s Alicat supported?

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Canada, South Africa, Costa Rica, Europe, Australia, China, India, Brazil, USA … where does Alicat not have regional support??? Well Antarctica, but can anyone else say they have distribution there? Nope!

Through the years Alicat Scientific has built a network of knowledgeable sales channel partners around the world to work with you to determine your mass flow and pressure needs. They maintain constant communication with the Alicat headquarters to ensure that the information they possess is up to date ...

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The valve offset parameter

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How does Alicat do it?! How can a proportional control valve hit a setpoint from zero so quickly and accurately?

Part of the answer is our valve offset setting. It’s like having a sprinter poised in the starting blocks, versus standing flat-footed, when the starter pistol sounds.

Valve offset is an adjustable control parameter which affects the amount of drive power applied to a closed valve. When we’re building a controller for a customer—and nearly all of our instruments are built-to-order—this ...

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