Dual beam ozone monitor. EPA-certified Federal Equivalent Method (FEM) with a 30-cm path length and a heated graphite scrubber in place of the traditional catalytic carbon scrubber. Ideal for monitoring applications in non-attainment regions and in heavily polluted air where interferences are likely from particulates, mercury, and/or volatile organic compounds.

• Heated graphite scrubber virtually eliminates interferences in the ozone measurements produced by this instrument
• Measurement range of 0-500 ppb with 0.5 ppb precision
• FEM designated for regulatory compliance monitoring in accordance with the Clean Air Act (modification to EQOA-0514-215)

Overview

• UV Absorbance-based ozone monitor with our patented heated graphite scrubber technology (U.S. Patent No. 10,295,517) to measure ozone virtually free of interferences
• Ideally suited for measurements of ozone in heavily polluted air where interferences are likely from particulates, mercury, and/or VOCs
• Enhanced optical path length of 30 cm provides a precision of better than 0.5 ppb for 10-second measurements
• Output new ozone measurements as often as every 2 seconds
• Designated by the EPA as a Federal Equivalent Method (FEM) as a modification to our Model 211 Scrubberless Ozone Monitor:  EQOA-0514-215
• Our paper published in Atmospheric Measurement Techniques describes the heated graphite scrubber
• Has the potential to bring many regions into compliance with the new national ambient air quality standard simply by making a more accurate measurement

Features

• Measurement of ambient ozone with greatly reduced susceptibility to interferences from other UV-absorbing species such as aromatic VOCs and mercury
• Dual beam, long path (30 cm) optical bench with high precision (< 0.5 ppb)
• DewLine™ for elimination of water vapor interference, a unique feature of 2B Tech instruments
• SD flash memory for virtually unlimited portable data storage
• Internal long-life sample pump (15,000 hours)
• EPA Federal Equivalent Method (FEM) for compliance monitoring (EQOA–0514–215)
• Convenient user interface, including remote operation via RS-232 communication
• NIST-traceable calibration (calibration suggested annually)