Computerized Multi-Gas Calibration System – Series 6100

The Environics® Series 6100 Computerized Multi-Gas Calibration System is a computer controlled, advanced instrument for dynamic multi-point gas calibration of ambient air analyzers.

Both in service and new Series 6100 can be optimized for low levels of ozone, down to 2 ppb repeatably at no extra cost! For in service units, we optimize the calibration and no new parts are required.

The Series 6100 automatically carries out zero, precision, span and multi-point calibrations using hydrocarbons, SO2, NO, NO2, CO, O3 and other gases of interest. The Model 6100 complies with all U.S. Environmental Protection Agency requirements.

The Series 6100 has a single chassis supporting up to three thermal mass flow controllers, an ozone generation module, a reaction chamber for gas phase titration, a mixing zone and control electronics.

Commands are keyed from the front panel and displayed on a backlit 4 line by 20 character liquid crystal display. The instrument can also be remotely operated using the RS-232 serial data interface or contact closures, both are standard in the Series 6100.

The Model 6100 is equipped with two mass flow controllers, but a third can be integrated to support a larger range of dilutions. The mass flow controllers are calibrated to a National Institute of Standards and Technology (NIST) traceable primary standard. The calibration data consists of a comparison of desired versus actual flow over the entire dynamic range of the instrument with linear interpolation between points. Calibration data is stored in non-volatile memory and may be updated by the user with an appropriate standard.

The Series 6100 ozone generator is factory calibrated according to a NIST traceable ozone standard. This temperature controlled, UV-based ozone generator includes a precision photo-optical feedback circuit to compensate for lamp aging effects.

The Series 6100 is offered in either a regular rack mount or portable configuration.

Both in service and new units can be optimized for low levels of ozone, down to 2 ppb repeatably to meet 40 CFR Part 58, Appendix A requirements at NCORE and trace sites!

Product Features and Benefits

  • Automatic calculation of dilution and span gas flows based on commanded concentration eliminates the need for manual computation and allows rapid transition from point to point
  • User-friendly interactive software with plain language prompts is simple to use, reducing technician training time and effectively eliminating error
  • Internally-stored mass flow controller calibration data enhances accuracy by as much as a factor of ten and streamlines field recalibration. Mass flow controllers are factory calibrated at 11 points.
  • Ozone generator pressure compensation guarantees repeatable and stable ozone generation at pressures other than the original calibration pressure.
  • Internally-stored ozone generator calibration data insures linear, repeatable ozone generation without photometer control. Ozone generator performance complies with U.S. EPA criteria for ozone transfer standards.
  • Complete, two-way RS-232 Serial Data Interface (standard) allows remote operation of the instrument including data collection, initiation of zero, gas selection, span and multi-point calibrations.


  • Concentration Mode: In response to software prompting, user chooses gas port, span (cylinder) gas concentration, output gas flow (total) and output gas concentration. Series 6100 automatically offers concentrations at the total flow specified.
  • Flow Mode: Allows user to manually command a preferred rate of flow for each mass flow controller, individually or together, and with or without ozone
  • Gas Phase Titration: Utilizes blend and generate ozone routines to lead user through GPT using "excess NO" technique
  • Generate Ozone: Allows user to specify, and then create a precise concentration of ozone
  • Maintain Ports: User enters the name of the span gas in the source cylinder, its concentration (ppm) and the port to which the cylinder is connected
  • Display: Allows user to monitor flow rates for each mass flow controller individually. Also offers ozone oven block temperature during generate ozone and gas phase titration routines.




Concentration: ± 1.0% setpoint
Flow: ± 1.0% setpoint
Flow Repeatability: ± 0.05% F.S.O.

Warm up time: 30 minutes

* Performance specifications are valid when all Mass Flow Controllers are operating between 10% and 100% of full scale flow.

Mass flow controllers are calibrated using a NIST traceable Primary Flow Standard, using a Reference Temperature of 25 °C (77 °F) and a Reference Pressure of 760 mm Hg (29.92” Hg)

Ozone Generator
Concentration Range: 0.02 - 0.5 ppm at 5 - 10 slpm
Optional Ranges: 0.05 - 1.0 ppm at 5 - 10 slpm

Accuracy: /- 2% or /- 0.003 ppm
Repeatability: /- 2% or /- 0.003 ppm (for 30 days)

Ozone Generator

Concentration Range: 0.02 - 0.5 ppm at 5 - 10 slpm
Optional Ranges: NEW! 2 ppb low ozone; 0.05 - 1.0 ppm at 5 - 10 slpm


Inlets Balance: External 1/4" Swagelok*
Span(s): External 1/4" Swagelok*

One external 1/4" Swagelok*
*(or compatible fitting)

Operating Pressures at inlets (flow dependent)
Minimum: 20 psig (1.38 Bar)
Nominal: 25 psig (1.72 Bar)
Maximum: 30 psig (2.07 Bar)

Wetted Surfaces
Tubing: Teflon®
MFCs: Stainless Steel
Seals: Viton®
Glass Chambers: Pyrex®

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

Performance Temperature Range
59° - 95 °F (15° - 35 °C)

Standard: 20 lbs
Including options: 30 lbs

Dimensions (w x h x d)
Portable: 17" x 7" x 15"
Rack: 19" x 7" x 15"


Voltage: 100 to 250 VAC, 50/60 Hz
Current: 2 Amps (maximum)

Operating Modes

Front panel keypad
Internal timer control
RS-232 serial data interface
I/O control (8 inputs / 8 outputs)

Data I/O

RS-232 serial data interface
I/O Control (8 inputs / 8 outputs)


  • Rack mount
  • Permeation oven
  • Solenoid valve on output
  • 3rd mass flow controller
  • Extra gas inlets

Other Equipment by this Supplier

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.