Robust Results Come in Small Sizes

What is GlobalMRV’s Axion R/S Portable Emissions Measurement System (PEMS)?

GlobalMRV’s Axion R/S is one of the most versatile and lightweight PEMS solutions on the market today. Easy to install and operate, Axion R/S measures mass-flow emissions of CO, CO₂, NO, HC, and O₂ in real-time.

Using LabVIEW©-based proprietary technology, Axion R/S provides accurate and timely information for decision making. The flexibility, minimal set-up time, and rapid deployment of Axion R/S PEMS enable large fleets to collect comprehensive exhaust flow data for immediate use. Measuring more than 50+ impact factors, Axion is a versatile solution for on-road and in-lab emissions data analysis.

Versatile, Lightweight, and Quick Data Acquisition for In-Lab and On-Road Environments

How does Axion R/S PEMS work?

Axion R/S PEMS is placed in the back of a vehicle, hooks up with wiring, and is connected to your vehicle’s OBD port. Installed in an industry-leading 15-20 minutes, Axion R/S PEMS gives a smooth signal of delivery, allowing users to measure, verify, and report CO, CO₂, NO, HC, and O₂ exhaust emissions, and other key calibration data.

Our 4th-generation Axion R/S PEMS delivers accurate and reliable emissions data all while measuring trace ambient pollutants and delivering comprehensive data reports. Best of all, Axion R/S can be rented as part of our Hardware-as-a-Service (HaaS) package.

Onsite, online, phone, and email support are included with a qualifying Axion R/S PEMS HaaS agreement.

Measures CO, CO₂, NO, HC, O₂, and More


21.7”L x 16.9”W x 8.5”H (550mm x 430mm x 215mm)

Weight, Power, and Flow

Weight: 37 lbs. (16.8 kg)

Power: 12 to 15 VDC

Amperage: 4-6 amps

Gas Data Sampling Rate: 1 hertz

Sample Flow: 10 liters/minute

Parameters Measured and Calculated

  • Time, vehicle speed, RPM, intake air temperature, manifold absolute pressure, and/or mass airflow, intake air flow
  • Grams of pollutant per second (g/s), exhaust air flow, and fuel consumption
  • Multipoint Calibration
  • Pollutants:
    CO, CO₂, and HC: Using Dual Non-Dispersive Infrared Analyzers
    – NO and O₂: Using Dual Electrochemical Cells
  • Optional:
    – PM Module: PM10, PM2.5

    – TDLS NH₃ (Ammonia) Module

    Ambient Sensor Module: Temperature, Humidity, and Pressure

    NO: UVRAS option available
    – Incoming and outgoing humidity measurement and compensation

    – Particulate Mass Measurement

    – Particle Number Measurement

    – Multipoint Calibration capabilities

Data Analytics

  • 50+ impact factors
  • 50+ data points every second of every test
  • 10+ gas analyses are performed every second of every test
  • Axion data is available for review within 5 minutes of post-test data uploads.
  • GlobalMRV portal with optional additional vehicle maintenance data analytics
  • With the portal, set up customized alerts, display data over maps for instant route event insights, and create customizable dashboards to display test data for your needs
  • Downloadable raw data files displaying large datasets (can be displayed for spreadsheets)
  • Control Area Network (CAN) and CAN flexible data (CAN FD) compatible
  • Compatible with ETAS INCA


Applicable operational engines include vehicles operating in real-world driving conditions, such as:

  • Lawn equipment
  • Motorcycles
  • ATVs
  • Passenger vehicles
  • Trucks and semi-trucks
  • Construction equipment
  • Marine vessels
  • Locomotives

Hardware as a Service (HaaS)

On the fence about making an Axion R/S PEMS purchase? Try it out with our Hardware as a Service (HaaS) rental package.

Customers looking to enjoy the Axion R/S PEMS without making a PEMS purchase outright can rent our PEMS, mini-PEMS, and iPEMS devices as part of our Hardware as a Service (HaaS) package plan.

Contact us for more information.


Easy to Deploy

GlobalMRV PEMS, iPEMS, and mini-PEMS units can set up in as little as 15 minutes


Flexible and Affordable

Our Hardware as a Service (Haas) model allows you to rent PEMS, iPEMS, and mini-PEMS for a fraction of the cost


Instant Results

Receive feedback and results instantly with our 24/7 monitoring capabilities

Ready to Get Started?

GlobalMRV helps institutions measure, report, and verify emissions for all different testing needs. Contact us today for a risk-free, complimentary consultation.