Environics Continuous Emissions Monitoring Calibration Systems (CEMCS) have been trusted in CEM vans and labs for over 20 years and meet or exceed US EPA 40 CFR Part 51 Method 205 Appendix M requirements.

Our systems are custom built, computerized, mass flow controller based gas calibration systems which allow you to dilute a single high concentration cylinder of span gas to low levels for the calibration of gas analyzers. 

The standard Series 4040 can generate blends down to a 10,000:1 ratio with standard MFC sizes, and more with custom options.

Units can be ordered and retrofit to run on a 24V power source so you can use your unit anywhere.

Flexibility:  Our CEMCS precisely dilute high concentration Protocol-1 or certified gas cylinders to an infinitely variable range of concentrations from high percents to low parts per million.  Never find yourself stuck on site without the exact dilution you need.

Cost Savings:  Reduce your gas consumption and cylinder rental expenses by up to 60%. The Series 4040 typically pays for itself in just 12 to 18 months, depending on gas usage.

Accuracy: Our systems utilize precise thermal mass flow controllers enhanced by Environics’ proprietary control technology, delivering up to 10 times greater accuracy compared to standard configurations. For detailed performance data, see our  Full-scale error vs. Setpoint error study.

Repeatability:  With a repeatability of ±0.05% of full scale, our systems ensure consistent, reliable results calibration after calibration.

Traceability:  Each system’s mass flow controllers are factory-calibrated using a computer-controlled primary flow standard traceable to NIST (National Institute of Standards and Technology), ensuring confidence in every measurement.

Audit Trail:  Automated calibration capabilities simplify record-keeping and ensure a complete and easily maintained audit trail.

Custom Options: With thousands of units in operation worldwide, we’ve developed a broad library of configurations to meet a wide range of customer needs. Every system is tailored to your specific application and requirements.

Contact us below to discuss your requirements and learn how we can provide the right solution for you.