The Environics^® Series 4000 is a multi-component gas mixing system that automatically mixes up to three individual gases in a balance gas. The gas mixes can be used in generating precise gas calibration standards, creating gaseous atmospheres or producing gas mixes for analytical research or production purposes. The Series 4000 can produce gas concentrations from percent to ppb levels for single or multi-point calibration.

The system consists of two components: the Series 4000 instrument and the user's personal computer. The user interface is a Microsoft^® Windows application that communicates with the Environics system via an RS232 serial interface.

The Series 4000 consists of a single chassis supporting up to four mass flow controllers. The mass flow controllers are factory calibrated using a primary flow standard traceable to the United States National Institute of Standards and Technology (NIST). Each flow controller utilizes an 11 point calibration table with linear interpolation, to increase accuracy and reduce flow controller nonlinearity.

PRODUCT FEATURES AND BENEFITS

• Simultaneously mixes up to three gases in a balance gas at user set concentrations.
• Allows multi-point calibration of analyzers.
• Automatic calculation of dilution and span gas flows.
• Internally-stored Mass Flow Controller calibration tables .
• Modular design allows for additional gas circuits to be added.
• User definable cylinder library allows for easy selection of frequently used gas cylinders. Each cylinder may contain an unlimited number of component gases, with automatic K-factor calculation.

INSTRUMENT OPERATION

The Series 4000 has three basic modes of operation.

Concentration Mode

Allows user to create a blend by entering target gas concentrations for each source gas cylinder, and the desired total output flow for the mix.

Flow Mode

Allows user to specify the flow rate of each gas cylinder.

Program/Schedule Modes

Provides the ability to program the instrument for unattended operation. Programs can be recalled and run in any sequence, at various times/dates.

SPECIFICATIONS

Performance^*

  Accuracy
     Concentration:         ± 1.0% setpoint
     Flow:                  ± 1.0% setpoint
  Repeatability:             0.05%

  Warm up time:  30 minutes

Mechanical

  Gas connections
    1/4" Swagelok (or compatible fitting)

  Operating Pressures
    Minimum:       10 psig (0.67 Bar)
    Recommended:   25 psig (1.68 Bar)
    Maximum:       75 psig (5.04 Bar)

  Wetted Surfaces
    Tubing:  Electropolished 316 Stainless Steel
    MFCs:    Stainless Steel
    Seals:   Viton®
             (Optional: Kalrez®, Buna-N, Neoprene, Metal)

  Operating temperatures
    32° - 104° F (0° - 40° C)

  Weight
    2 MFC System:  18 lbs.
    4 MFC System:  23 lbs.

  Dimensions (w x h x d)
    Portable:  17" x 7" x 15"
               (43.18 cm x 17.78 cm x 38.1 cm)
    Rack:      19" x 7" x 15"
               (48.26 cm x 17.78 cm x 38.1 cm)

Electrical

  110 to 240 VAC, 50/60 Hz

Electronics

  12 Bit A/D and D/A Conversion
  RS232 Serial interface

Software

  Environics Instrument Control Software
    (supplied on CD-ROM or optionally on 3.5" disks)

PC Requirements

  IBM PC or compatible (486-33 or higher)
  Microsoft Windows 3.1 (or higher)
  (Compatible with Windows 95/98/Me/NT/2000/XP)
  8 MB RAM
  10 MB Hard Disk Space
  CD_ROM or 3.5" disk drive
  RS-232 Communication port (or optional USB/serial adapter)

OPTIONS

• Additional input ports (up to 4)
• Additional MFC's (up to 4)

Download a demo of the Series 4000/4040 software