Gas Mixing and Gas Delivery System

Featured Product from Environics, Inc.


Download Full Datasheet for the Series 3000 (pdf)

Series 3000
Gas Mixing / Gas Delivery System
This "On Demand" gas delivery and gas blending system will provide cost savings and repeatability of your mixture.

The Environics® Series 3000 gas delivery/blending system offers on-site gas blending of 100% pure bulk gases and is configured to provide a solution to using costly premixed cylinders of gas. Unlike premixed cylinders, the Environics model 3000 provides a repeatable blend of gases, using precision thermal mass flow controllers. The system offers flexibility in addressing particular process and market needs. Although two and three gas mixtures are more common, gas mixtures of more constituents can be produced. The primary benefits of the system are cost savings in using pure gases versus premixed cylinders as well as the repeatability of the mixture. The system will undoubtedly pay for itself because of these savings.

The main controls of the system are HMI (Human Machine Interface); color touch screen and PLC combined. A series of I/O modules connect to all the electro-mechanical devices. Ethernet connection comes standard on all S3000. We also provide a free software utility that allows you to remotely monitor and operate the instrument over an Ethernet connection. The system offers options such as remote operation, alarms, a gas humidifier and an oxygen compatible construction.

Precision mass flow controllers (MFC) are used to control the flow rate of each gas for blending. Each MFC is calibrated at 11 points on a primary flow standard traceable to NIST. Using the 11 points of calibration data, the software of the S3000 applies linear interpolation to provide a more accurate and linear flow rate; ultimately providing a precision blend of gases.

Optional precision mass flow meters (MFM) can be installed on the outputs of the MFCs. These electronic meters monitor the flow rate of each flow controller and the PLC mathematically calculates the actual blend concentration based on the metered flows. This provides an independent check on the MFC performance. Each MFM is also calibrated at 11 points with linear interpolation applied.

The system is manufactured in a NEMA 4 wall mount enclosure, with internal electrically grounded aluminum panels for support and a clear polycarbonate door to protect the controls. Optional enclosures are available. Fitting connections and tubing are 316 stainless steel.

When actively mixing, the instrument sends the diluted gas mixture through an in-line static mixer to ensure a homogenous mix of gases. The system provides a controllable positive pressure to meet the requirements of a process downstream. The mixer can be configured to provide gas to a ballast tank, turning off and on as the pressure rises and falls in the tank. This is useful for gas conservation, when the demand for gas is sporadic or intermittent in use.

An optional visual and/or audible alarm can be installed onto the top of the instrument to alert the operator of specific fault conditions. A condition that would trigger an alarm is if the interpreted concentration from the optional flow meters falls outside a user adjustable tolerance. NEW FEATURE! These alarms can also be emailed to keep you updated even when you are not onsite. This requires the IP address of the email sever have a static IP address.

PRODUCT FEATURES AND BENEFITS

  • Optional precision mass flow meters (MFM) can be installed on the outputs of the MFCs.
  • Flow standard is accurate up to 1% of reading
  • Color touch screen and PLC combined.
  • Repeatability up to +/- .05% of full-scale.
  • Optional visual and/or audible alarm, email alarms

APPLICATIONS

Gas Mixers for Sensor Screening and Research Systems
Environics gas mixing and gas delivery systems are used extensively by sensor development companies as well as sensor manufacturers. Our systems are ideal for production screening (sorting) of sensors as well as research and development. The Environics systems are an efficient and versatile piece of laboratory equipment.

Download Data Sheet

Each system is a custom built, computerized, mass flow controller based systems which allow you to automatically blends and dilutes gases to generate precise gas mixes for your analytical research or production purposes.Our most popular mixing systems used by sensor developers and manufacturers are:

The Series 3000 Gas on Demand system is a computerized gas panel system and is usually used to dynamically produces and delivery mixes containing two or three gases, though more complex mixtures can also be created. The main controls of the system are HMI (Human Machine Interface); color touch screen and PLC combined.

The Series 4000 is a multi-component gas mixing system that automatically mixes up to three (3) individual gases in a balance gas. The user interface is a Microsoft® Windows application that communicates with the Environics system via a USB interface.

Accuracy: Our technology is based on very precise control of thermal mass flow controllers. The mixing systems are capable of taking a high concentration cylinder of span gas and blending it with a balance gas to produce percent, ppm, ppb and ppt level standards, all to ±1% set point accuracy. The Full-scale error vs. Setpoint error document shows the 10x improvement in accuracy of a thermal mass flow controller when using Environics controlling technology.Repeatability: Our systems have a repeatability of +/-0.05% of full scale.Traceability: The instruments' mass flow controllers are factory calibrated using a computer controlled primary flow standard traceable to the United States' National Institute of Standards and Technology (NIST). Price Savings: By using pure gases in place of expensive pre-mixed blends, your system will help pay for itself. Optional Alarms: An optional visual and/or audible alarm can be installed to alert the operator of specific fault conditions. NEW FEATURE! These alarms can also be emailed to keep you updated even when you are not onsite. This requires the IP address of the email sever have a static IP address. Contact Us for more information on this exciting new feature!Custom Options: We have thousands of systems in the field and have developed an extensive library of applications and solutions to meet our customers' needs. Common options include: an RS-232 Serial Data Interface, Permeation Ovens, Purge Circuit, Status Board, Heated Gas Handling System, or Extra Component Gas Inlet Ports.

About Environics - World Leader in Gas Mixers, Gas Dilution and Calibration Systems
Environics is a world leader in computerized gas flow instrumentation. Our headquarters for design, manufacturing, sales and service is located in a modern 11,000 square foot facility in Tolland, Connecticut. We are ISO 9001 certified, having received ISO 9001 Quality Systems Certification in April, 1997.

We are a profitable, privately held company, founded in 1986 and incorporated in the State of Delaware. As of April 2011, we are a Women Owned business, certified through the Woman Owned Small Business Program run by the United States SBA. Our five-year projections show continued growth through the introduction of new products and product innovations. All service is handled factory direct. Sales are handled direct and by selected manufacturers representatives and distributors worldwide

Environics Technology
Our gas mixing technology is based on very precise control of thermal mass flow controllers (MFCs). Normally, thermal MFCs offer an accuracy +/- 1% of full-scale flow. However, when combined with Environics computerization and calibration, this accuracy specification is improved to +/- 1% of setpoint. The Full-scale error vs. Setpoint error document shows the 10x improvement in accuracy of a thermal MFC when using Environics controlling technology. Our calibrators and dilution systems exceed the accuracy required by the EPA for Ambient Calibrators (ref: Method 205, 40CFR51, 40CFR60, 40CFR75). For more technical information, see our Technical Documents section, which contains current articles and CFR's pertinent to our technologies.

We encourage you to challenge us with your most difficult requirements. We specialize in custom systems. We have thousands of systems in the field and have developed an extensive library of applications and solutions to meet our customers' needs. The application of our technology has enabled us to become the world leader in user-friendly computerized gas flow instrumentation.

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