Baseline a MOCON company
P.O. Box 649
19661 Highway 36
Lyons, CO 80540

Toll Free: 800.321.4665
Phone: 303.823.6661
Fax: 303.823.5151
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Portable, hand-held Photoionization Detector (PID)

The VOC-TRAQ II total volatile organic compound (TVOC) detector is the easiest way to monitor and record TVOCs using any PC with a Windows® operating system. Using the award winning MOCON - Baseline piD-TECH® eVx photoionization detector makes the VOC-TRAQ II the most reliable, accurate, and inexpensive portable TVOC detector on the market.

Designed for ease of use whether you are an air quality consultant, safety engineer, maintenance manager, or just concerned about TVOCs in your indoor environment.

The USB compatible VOC-TRAQ II can operate while connected to a PC, or it can remotely store up to 36,000 sample readings with the detector’s internal memory using the optional rechargeable power supply. Alarm levels are programmable with LED and/or audible notification. The VOC-TRAQ II is also compatible with numerous USB accessory options.
Unit of Measure


Air Quality Analysis For:

  • Cleanrooms
  • Work Environments
  • Leak Detection
  • Public Places
  • Educational Facilities
  • Reseach and Development
  • Accessories

    N/A Included: USB cable (2.0 to mini-B), VOC-TRAQ II PC software

    Optional: Device stand, Rechargeable 24 hour battery for data logging without a PC, Calibration Cap w/ tube, Carrying Case, piD-TECH® eVx Lamp Cleaning Kit, piD-TECH® eVx Maintenance Kit

    Gases Monitored

    N/A Many Volatile Organic Compounds (VOCs)


    N/A MOCON - Baseline piD-TECH® eVx photoionization detector, 10.6eV Lamp

    Available Dynamic Ranges (Isobutylene)

    N/A 10.0 eV Part #043-739 6,000 ppm (Purple) 10.0 eV Part #043-741 60 ppm (Yellow) 10.0 eV Part #073-740 600 ppm (Red) 10.6 eV Part #043-734 10,000 ppm (Green) 10.6 eV Part #043-735 2,000 ppm (Purple) 10.6 eV Part #043-736 200 ppm (Red) 10.6 eV Part #043-737 20 ppm (Yellow) 10.6 eV Part #043-738 2 ppm (Blue)

    Operating Temperature

    N/A -20 °C to 60 °C (-4 °F to 140 °F)

    Operating Humidity

    N/A 0 - 90% RH (non-condensing)

    Response Time

    N/A T90: < 2 seconds (typical) green, purple, and red.
    < 4 seconds (typical) yellow and blue.


    N/A ± 3% of reading, with constant temperature and pressure


    N/A 1" dia x 3.6" H (2.5 cm dia x 9.1 cm H)


    N/A 1.9 oz (53.7 g)

    Internal Memory

    N/A 2 Mb EEPROM memory stores up to 36,000 readings


    N/A USB


    N/A Powered from USB 5 VDC power for operation [PC, wall connected USB power supply (5.0 VDC, 40 mA), or optional battery pack]


    N/A Software controlled

    Computer Requirements

    N/A Microsoft® Windows® 10 / 8 / 7 / Vista™ PC or equivalent via USB, 2.0 or greater