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Why do I care about slew rate?

Posted by Jennifer Collins & William Lewental on Jul 23, 2020 2:00:00 PM

In a critical process it may be necessary to slowly bring the vacuum level up or down at a specified rate so as to not disturb process material. This can be referred to as the slew rate, or ramp rate, of the vacuum level. A new feature for the Stratavac Touch is the ability to set a slew rate along with a setpoint for a valve and the controller handles the details.
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Topics: StrataVac 2018, Vacuum Control, Multi-sensor Vacuum Controller, Vacuum Technology

StrataVac | Behind the Name

Posted by Jennifer Collins on Jul 8, 2020 1:30:00 PM

How did STRATAVAC get its name? The prefix Strata is for Stratum. Webster's Dictionary defines Strata as “a layer of material, naturally or artificially formed, often one of a number of parallel layers one upon another”. STRATAVAC, DigiVac’s Multi-Gauge Vacuum Controller, is customizable for a number of Vacuum Applications based on its ability to add additional driver cards to the vacuum instrument. And "Vac" for, well, vacuum ;). Strata (many layers) of Vac (vacuum) capabilities. Now, let's dig into a few of the DigiVac STRATAVAC and STRATAVAC Touch lines features and benefits.
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Topics: Vacuum Analytics, StrataVac 2018, Vacuum Control, Vacuum Technology

Pharmaceutical | Freeze-drying and Vacuum Ovens

Posted by Jennifer Collins on May 4, 2020 9:00:00 AM

Pharmaceutical Freeze-drying and Vacuum Drying for Research and Manufacturing in the .01 Torr to 400 Torr Range Vacuum Pressure is used in Pharmaceutical Manufacturing to:  Help create bulk and active ingredients for FDA approved drug products Increase the shelf-life of a drug product Sterilize medical devices  Lyophilization, also known as freeze-drying, is a process used for preserving biological material by removing the water from the sample, which involves first freezing the sample and then drying it, under a vacuum, at very low temperatures. The low pressure environment helps minimize oxidation during drying. Lyophilized samples may be stored much longer than untreated samples. The resulting precipitate is a shelf-stable powder. This powdered drug is later reconstituted at point of care for patient use.
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Topics: Medical/Pharma, Researcher topics, Vacuum Regulation, Vacuum system setup, vacuum system needs, Rough Vacuum, medical, laboratory, vacuum drying, freeze drying, vacuum oven

Medical Vacuum Applications | Vacuum Sterilization

Posted by Jennifer Collins on Apr 9, 2020 12:37:00 PM

Vacuum Instrumentation for Vacuum Drying and Sterilization of Medical Devices Sterilization of medical equipment is vitally important to render a product free from viable microorganisms (such as bacteria, fungi, and viruses).  Steam is used in the many sterilization processes. The steam is put under pressure that is higher than atmospheric pressure (> 1 bar). A sterilizer configured to run a vacuum cycle will be equipped with a vacuum system. A typical vacuum cycle will begin with a series of alternating steam and pressure injections. The use of a vacuum controller to lower the vacuum pressure this will remove air from the chamber.
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Topics: Medical/Pharma, Researcher topics, Vacuum Regulation, Vacuum system setup, vacuum system needs, Rough Vacuum, medical, laboratory

Don't Forget the Grease!

Posted by Jennifer Collins on May 30, 2019 2:48:06 PM

How many connections do you see? When putting together distillation systems that function under vacuum, you cannot forget to grease all the connections or leaks will happen. Tracking down a leak after everything is set-up just leads to frustration and wastes time!
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Topics: Accessories, Vacuum system setup, vacuum system needs, Vacuum grease

Benefits of Throttle and Bleed Vacuum Control

Posted by Jennifer Collins on Feb 13, 2019 2:50:33 PM

The most commonly used vacuum pumps run at one speed. Therefore, the pump is always driving toward the deepest vacuum level possible where they function optimally. Just because this is the sweet spot for your vacuum pump, doesn’t mean it’s the best vacuum level for your process.
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Topics: StrataVac 2018, Vacuum Control, Multi-sensor Vacuum Controller, Vacuum Technology, valves

Recap of AVS 2018 - Long Beach, CA

Posted by Kerry O'Brien on Nov 5, 2018 1:19:35 PM

Two weeks ago (10/23), the DigiVac team walked into AVS 65 at the Long Beach Convention Center with excitement, eager to show exhibit attendees our new product developments. On display, we had a few products, some new, and some known but updated in appearance and functionality. Our booth visitors found the traditional thermocouple Bullseye with a Bluetooth connected to our Vacuum Gauge 2.0, StrataVac 2018 with one thermocouple sensor and our brand new StrataVac Touch connected to our recently launched VacStable valve, a thermocouple sensor and an MKS 523 gauge. Everything was a hit!
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Topics: Vacuum Technology