Series 2040
Multi-Component Gas Blending and Gas Dilution System

The Environics® Series 2040 Multi-Component Gas Blending and Gas Dilution System offers the unique capability to blend and dilute gases in a single chassis system. This system stands out from competitors in its ability to generate infinitely varied concentrations within the operating range of the instrument.

Download Full Datasheet for Series 2040 (pdf)

gas blending and gas dilution systemThe 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 2040 can produce gas concentrations from percent to ppb standards to your analytical instrumentation at highly accurate levels with our user friendly computer controlled system.

The Series 2040 consists of a single chassis supporting up to six (6) mass flow controllers, a serpentine pre-mix zone and a zero dead-space final mixing zone. All gas wetted surfaces are electropolished stainless steel. Seals are gas compatible elastomers.

The Series 2040 employs mass flow controllers calibrated to a NIST (National Institute of Standards and Technology) traceable primary standard.

Commands are entered from the front panel and displayed on a backlit twenty-five line by eighty character liquid crystal display. Calibration sequences are stored in the internal microprocessor for recall by the keypad, optional RS-232 communications or optional status interface.

The Series 2040 is available in either a bench top configuration or an optional standard 19" rack mount.


  • Broad range of dilution ratios (1:1 - 10,000:1 depending on configuration) allows the user to significantly reduce the number of gas cylinders needed to perform compliance tests.
  • Multi-component capability permits the user to generate a wide range of complex standards with a minimum inventory of expensive, long lead-time, multi-component gas cylinders.
  • Automatic calculation of dilution and span gas flows based on the concentration commanded by the user eliminates the need for manual computation and allows rapid transitition from point to point and scale to scale.
  • Internally-stored mass flow controller calibration data improves accuracy.
  • High capacity memory permits storage and recall of up to 200 multi-component "recipes", saving time and reducing errors.
  • Twenty-five line by eighty character display permits viewing of data in worksheet form.
  • Modular design allows user to add additional gas circuits later, reducing initial investment and protecting against obsolescence.
  • Optional RS-232 Serial Data Interface permits remote operation and complete integration with a data station.


The Series 2040 has seven primary routines accessible through "soft" keys, located immediately below their on-screen labels.

  • Concentration Mode: User enters target output gas concentration for the span gas. The actual concentration is displayed during mixing.
  • Flow Mode: User enters target flow rate (cc's per minute) for each component gas. Actual flow rates are displayed after mixing is initiated.
  • Maintain Ports: User enters the name of the component gas in the source cylinder, its concentration and the port to which it is connected.
  • Divider Mode: Allows the user to operate the instrument as a computerized ten step gas divider.
  • Automatic Sequencer: Permits unattended automatic operation of the instrument on a programmable seven-day schedule.
  • Purge Mode (Optional): Purge component gas circuits and mixing zone.
  • Status (Optional): Allows user to remotely activate different modes of the system and also activate external devices


Performance (as a percent of setpoint)*

From 10 to 100% of Full Scale Flow
Concentration: ± 1.0%
Flow: ± 1.0% Repeatability ± 0.05%

*Mass flow controllers are calibrated using a NIST traceable Primary Flow Standard, using a Reference Temperature of 0o C (32°F) and a Reference Pressure of 760mm Hg (29.92 in. Hg)

Warm up time: 30 minutes

Balance: One external 1/4" Swagelok™*
Purge: One external 1/4" Swagelok™*
Analyte: One external 1/4" Swagelok™*

One external 1/4" Swagelok™*

Operating Pressures at inlets
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
MFC's: Stainless Steel
Seals: Viton
(Optional - Kalrez, Buna-N, Neoprene, Metal)

Operating temperatures
32° - 122° F (0° - 50° C)

Performance temperatures
59° - 95° F (15° - 35° C)

Minimum: 35 lbs. (16 Kg)
Maximum: 70 lbs. (32 Kg)

*(or compatible fitting)

Dimensions (w x h x d)
Portable: 17" x 7" x 23.5"
(43.18cm x 17.78 cm x 59.69 cm

) Rack: 19" x 7" x 23.5"
(48.26 cm x 17.78 cm x 59.69 cm)

Standard: 115 VAC (100 to 130 VAC), 50/60 Hz
Optional: 220 VAC (200 to 260 VAC), 50/60 Hz
Current: 3 Amps (maximum)

Inmos T 400 series, 32 Bit processor
12 Bit A/D and D/A Conversion

Operating Modes
Front panel membrane keypad
Internal timer control
Optional RS-232 serial data interface
Optional Status board interface

Data Output
Parallel printer port (Centronics™ compatible) Optional RS-232 serial data interface


  • RS-232 Serial Data Interface
  • Status Board
  • Solenoid Valve on Output
  • Extra Component Gas Port
  • Pressurization Package
  • Humidification Package