Gas Sensors

Andros 6500 and 6520

OEM Gas Analyzers for Auto Emissions

Advanced Energy’s Andros 6500 and 6520 gas analyzers offer unparalleled accuracy and performance via simplified design and implementation. Unlike analyzers that require moving components, the 6500 and 6520 use pulsed-infrared sources to achieve high accuracy and reliability.
  • Highly accurate calibration
  • High stability and rapid warm-up
  • Unique optical architecture
  • Comprehensive software architectures
  • Overview
  • Technical Specs
  • Documents
  • Service & Support
  • Distributors


The Andros® 6500 and 6520 gas analyzers (non-dispersive infrared (NDIR) gas sensors) are individually calibrated for operation from 0 to 50°C over all specified concentrations. The results are stored to provide accurate analysis. Enhanced optics and electronics virtually eliminate zero drift. Only two “zeroes” are required during the first three minutes of operation.

The systems communicate with hosts via RS232 or USB. You can define the TTL outputs and the analog and tachometer inputs. These can be integrated into the data output stream for your convenience.


  • Meet and exceed ISO 3930/OIML R99, Class 0, and BAR 97 specifications
  • Virtually eliminate zero drift via enhanced optics and electronics
  • Control key system devices (e.g., gas flow solenoids, sampling pumps, etc.)
  • Reduce or eliminate the need to calibrate
  • Easily upgrade older products thanks to comprehensive software


  • Measures up to five gases (three via NDIR and two via plug-in sensors)
  • RS232 and USB
  • DC pump and solenoid valve drivers
  • Analog to two digital inputs
  • Differential pressure transducer (6520 only)
  • Performance

    Response Time

    Response times are specified at a sample flow rate of 1 liter per minute through the 6500 sample cell

    Data Refresh Rate

    1 second

    Warm-Up Time

    30 s ready, 3 min usable, 30 min to full performance

    Host Communication

    USB or RS232C asynchronous serial; 19,200 bps or 9600 bps (default is 19,200)

  • Electrical Specifications

    Input Power

    +12 VDC nominal (+9 to +16)

    Power Consumption

    1.8 W average at 12 VDC

  • Physical Characteristics

    L x W x H

    19.18 x 7.37 x 5.03 cm (7.55 x 2.90 x 1.98 in)


    0.3 kg (0.8 lb)

  • Environmental Specifications

    Operating Temperature Range

    0 to 70°C (32 to 158°F), accuracy not specified > 50°C

    Temperature Compensation

    Incl. automatically for temp. change > 4°C for O2

    Operating Humidity

    To 95% RH (Non-condensing)

    Operating Altitude

    -300 to 3000 m (-1000 to 10,000 ft)

Specifications are subject to change without notice. Not all options and accessories are available for all models and configurations. Dimensions listed generally refer to standard configurations and module bodies only. Please confirm technical specifications and customizations with a sales representative. Advanced Energy is not responsible for errors or omissions.

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Product Support

U.S.: +1 800 446 9167
Asia: +86 29 8874 1895
China: 400 8899 130
EMEA: +44 800 032 1546
U.K.: 08000 321 546

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