The Environics, Inc. Post

Top 5 Maintenance Tips from our Service Department

Posted by Rachel Stansel on Thu, Jan 11, 2018 @ 10:22 AM

We often receive calls and emails asking about the best way to maintain our mixers and dilutors. There are several important things that you can do to keep your unit running in top shape. They will also help you extend the life of your unit.

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Tags: customer focus, Environics Inc, gas mixing, Ambient Air calibration, zero air generator, Series 4000, Series 4040, Series 4020, troubleshooting6100, troubleshooting6103, Troubleshooting

Custom System Focus - Explosive Gas Mixing and Dilution

Posted by Rachel Stansel on Thu, Sep 04, 2014 @ 02:24 PM

At Environics, all of our units are custom built for our customers' specific needs.  Customers who need to dilute/mix explosive gases often come to us for help creating highly specialized systems. Most often, this is in order to calibrate gas detectors or for research or calibration purposes.  To meet these unique needs, Environics designed a modified version of our Series 4040 gas dilution system which included a dual chassis design.

The electronics enclosure includes the power supply and PC boards for controlling the Mass Flow Controllers (MFC) and direct acting solenoid valves in the second enclosure. The electronics enclosure connects to a computer via a 9 pin serial port connector and cable. The 4040 software, on the computer, communicates with the microcomputer board inside the electronics enclosure.

The second enclosure is sealed and houses the MFCs, valves and components to support the enclosure purge. A continuous purge flows through the enclosure while it is running. This serves two purposes. The first is to carry out heat built up by the internal components. The second is to dilute any potential leaks that may develop. The gas plumbing inside this enclosure was vacuum leak tested to 1X10-8 ATM CC/SEC He.

In addition to continuous purge flow, the enclosure is pressurized to approximately 5” H20 while running the enclosure purge. This provides and indicator that the purge is activated as well as preventing any air leaks into the enclosure from outside. A safety vent was  added to vent the enclosure to atmosphere if the pressure inside the enclosure reaches 20” H20. This could happen if for some reason the purge vent becomes blocked or the pressure on the purge rotameter is too high.

The two enclosures are connected electrically via two control cables labeled MFCs and VALVES. An earth ground wire is connected from the electronics chassis to the aluminum mounting plate inside the purged enclosure. This safely discharges any static electricity that can build up in a system with flow.

Have a similar need or need help with another unique set of conditions?  You can contact us at (860) 872-1111 or here for more information.

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Tags: Environics Inc, gas mixing, gas dilution, calibration, customer focus, explosive gas mixing, custom gas mixing system

Environics Around the Globe

Posted by Rachel Stansel on Thu, Apr 03, 2014 @ 01:31 PM

As a US-based company, we are often asked where we ship internationally.  Both direct and through distributors and reps, we sell worldwide.  

Here is a map of the locations our units have shipped from us over the past few years (the blue pointers are our distributors).

Are you using an Environics system in a location that isn't marked?  Let us know so we can add you to the map!

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Tags: Zero Air, Environics Inc, gas mixing, customer focus

Customer Focus - Working with High Concentrations of Explosive Gases

Posted by Rachel Stansel on Wed, Oct 09, 2013 @ 09:40 AM

Often, customers come to us looking for a gas flow management system to fit a very particular set of criteria.  In some cases, this requires just minor customization of a current Environics model.  In other cases, a completely unique design is required.  Today, I share with you one interesting example.  Although I focus on the first system we designed, we have since made similar systems for other customers whose needs parallel these.

Our customer needed to dilute explosive gases at high concentrations in order to calibrate gas detectors.  After working with our sales and engineering teams, we designed and built a modified version of our Series 4040 gas dilution system which included a dual chassis design.

The electronics enclosure includes the power supply and PC boards for controlling the Mass Flow Controllers (MFC) and direct acting solenoid valves in the second enclosure. The electronics enclosure connects to a computer via a 9 pin serial port connector and cable. The 4040 software, on the computer, communicates with the microcomputer board inside the electronics enclosure.


The second enclosure is sealed and houses the MFCs, valves and components to support the enclosure purge. A continuous purge flows through the enclosure while it is running. This serves two purposes. The first is to carry out heat built up by the internal components. The second is to dilute any potential leaks that may develop. The gas plumbing inside this enclosure was vacuum leak tested to 1X10-8 ATM CC/SEC He.

In addition to continuous purge flow, the enclosure is pressurized to approximately 5” H20 while running the enclosure purge. This provides and indicator that the purge is activated as well as preventing any air leaks into the enclosure from outside. A safety vent was  added to vent the enclosure to atmosphere if the pressure inside the enclosure reaches 20” H20. This could happen if for some reason the purge vent becomes blocked or the pressure on the purge rotameter is too high.

The two enclosures are connected electrically via two control cables labeled MFCs and VALVES. An earth ground wire is connected from the electronics chassis to the aluminum mounting plate inside the purged enclosure. This safely discharges any static electricity that can build up in a system with flow.

Have a similar need?  You can contact us at (860) 872-1111 or here for more information.

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Tags: Gas Flow, Environics Inc, gas mixing, gas dilution, customer focus

Customer Focus - Use of Hypoxia to Detect Deficits After Concussion

Posted by Rachel Stansel on Fri, Jul 26, 2013 @ 10:49 AM

From time to time, we like to showcase the research of our customers.  Our team is always interested in learning more about the huge variety of research projects and discoveries made in labs using Environics systems.

The Environics Reduced Oxygen Breathing device is used worldwide in the training of aviators and others who regularly are flying at altitude.  Using the ROBD2, they learn what it feels like to be hypoxic.  However, the system is not solely used for training.  Several researchers have used the ROBD2 for hypoxia related projects.  Today, we focus on the results of a recently published study by lead author, Leonard Temme (Vision Sciences Branch, Sensory Research Division, U.S. Army Aeromedical Research Laboratory at Fort Rucker, AL).

Mild traumatic brain injury (mTRI) is more commonly known as concussion.  In general, it is suggested the recovery from this type of injury takes 7-10 days, although there is more and more research in terms of those who suffer mTRI repeatedly (such as football players).  This recovery time is based on observations made in individuals under unstressed environmental conditions such as a doctor’s office or hospital. The authors wanted to examine how putting someone under stress would affect people who have a history of such a trauma.  The question was would a person with a medical history of a concussion who seems recovered become symptomatic when exposed to a stress such as sleep deprivation, pharmaceuticals, extreme temperature, anxiety or hypoxia.

A chance observation made during a training study led the authors to this question.  Pilots were exposed to a normobaric hypoxic condition that simulated conditions seen at 18,000 feet using an ROBD2. While “flying” under standard conditions, the pilots behaved comparably.  However, when the pilots were breathing air with only ~10% oxygen, one pilot lost control of the aircraft without realizing it. Looking into this pilot’s medical history, the researchers found he had experienced a significant concussion ejecting from a high-performance aircraft.  This chance observation led the authors to this question:  Would a stressor, in this case hypoxia, help uncover a symptom that was unobservable under normal conditions? 

To begin, two sets of 36 subjects between 18-50 were gathered from the community:  one group with a history of mTBI and one without.  The subjects were then matched “on the basis of age, gender, tobacco smoking consumption, weight, height, and body mass index” for comparison purposes.  Utilizing eight tests from the BrainCheckers test battery, the subjects were examined under both standard conditions and three different reduced oxygen conditions. 

While seven of the tests showed no significant difference between groups, the performance on the M2S test, which is a measure of short-term visual memory, did.  Under reduced oxygen stress, those with a history of mTBI showed a significant impairment when compared with the control group. 

The researchers’ findings open up potential avenues for using hypoxia to test brain stress following mTBI.   The authors’ state, “Such a capability would be particularly important since mTBI, even when apparently completely recovered using conventional examination strategies, may include deficits observable only under stress.”

Having a way to clinically measure recovery from mTBI would be a great advantage.  It will be interesting to follow these studies. 

To read the full article, click here.

Have an interesting project using your Environics system?  Share it with us and you may be the included in our next focus!

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Tags: Hypoxia, pilot training, hypoxia training, customer focus, ROBD2

Customer Focus - Development of a Highly sensitive H2S Gas Sensor

Posted by Rachel Stansel on Fri, Dec 14, 2012 @ 11:25 AM

From time to time, we like to showcase the research of our customers.  Our team is always interested in learning more about the huge variety of research projects and discoveries made in labs using Environics systems.

Recently, we received a note from Ying Wang at the University of Connecticut on a research project utilizing an Environics 4000 gas mixing system. Ying is a member of Dr. Yu Lei's lab in the department of Chemical, Materials & Biomolecular Engineering.  The lab has two main areas of study. First is the development of various (bio)sensors, whose uses range from the diagnosis, drug discovery, screening and food safety, and pollutant monitoring.  Recent work has also involved the detection of biological and chemical agents.  The second focus is the synthesis of nanostructured materials and their application, with the goal of developing new nanomaterials that can be applied to the fields of sensing and biosensing.

A recent paper published in RSC advances, the researchers utilized their Environics system in the fabrication and testing of a sensor device which featured a aligned CuO nanowires capable of H2S detection.  Sensitivity was examined under a variety of conditions, including levels between 10 to 1000 ppb and temperatures from 25 to 420 °C.  The CuO nanowire sensor showed a detection limit of 2.5 ppb and a linear response range of 10 ppb to 100 ppb.

Have an interesting project using your Environics system?  Share it with us and you may be the included in our next focus!

(image source: http://pubs.rsc.org/en/Content/ArticleLanding/2012/RA/c2ra00718e)

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Tags: gas mixing, gas mixer, customer focus, sensor