- FEM single beam (UV-based) ozone analyzer; accurate and precise ozone measurements
- Lightweight with low power consumption and a quiet, long-life internal air pump
- Applications include ambient monitoring in remote locations where power is limited; vertical atmospheric profiling; urban arrays of ground-based ozone monitors; personal exposure monitoring; laboratory studies
Model 202 Ozone Monitor
2B Tech’s original single channel EPA-certified Federal Equivalent Method (FEM) ozone monitor. The Model 202 was first manufactured in 2002 and features real-time ozone measurements produced every 10 seconds. Robust and versatile ozone monitor used for a variety of ambient ozone monitoring applications.
- 0-20 ppm with 1.5 ppb precision
- EPA-certified FEM (EQOA-0410-190)
- Highly portable, low power, benchtop ozone monitor
Overview
- Ozone measured 0-20 ppm by UV absorption at 254 nm, single beam
- Quiet long-life internal air pump (now standard)
- Low power consumption (~7.2 watt)
- Internal data logger (EEPROM), logs 16,383 lines of data
- Real-time clock
- Both serial and user-scalable analog voltage outputs
- Flash card memory (SD card) for virtually unlimited, portable data storage
- Three 0-2.5 VDC analog inputs for logging other measurements, such as external temperature, pressure, and humidity
- Convenient user interface to microprocessor, including calibration parameters (gain and zero)
- Selectable measurement time of 10 s or data averaging times of 1 min, 5 min and 1 hr (custom averaging times available)
- DewLineā¢ for elimination of any water vapor interference, a unique feature of 2B Tech instruments
- Model 202 Ozone Monitor
- 1.25A power adapter
- Serial port cable (9PinF-9PinF)
- External ozone scrubber
- SD card reader
- Hex ball driver (7/64″)
- USB flash drive preloaded with operation manual and other useful documentation
- NIST-traceable calibration certificate
- External particle filter
- Cold-weather upgrade (-20 to 50Ā°C)
- High-altitude upgrade (25km)
- Serial-to-USB converter (not included with standard purchase)
- Rack-mount configuration upgrade available
- Ambient Size-Segregated Particulate Matter Characterization from a Port in Upstate New York, O.D. Moyebi, B.P. Frank, S. Tang, G. LaDuke, D.O. Carpenter and H.A. Khwaja,Ā AtmosphereĀ (2022)Ā 13, 6, 984.Ā MDPILink
- Rate of Atmospheric Brown Carbon Whitening Governed by Environmental Conditions, E.G. Schnitzler, N.G.A. Gerrebos, T.S. Carter, Y. Huang, C.L. Heald, A.K. Bertram and J.P.D. Abbatt,Ā Proceedings of the National Academy of SciencesĀ (2022)Ā 119, 38, e2205610119.Ā PNAS Link
- Sugarcane Responses to Elevated Ozone, B.B. Moura, Y. Hoshika, R.V. Ribeiro and E. Paoletti,Ā 2002 IEEE Workshop on Metrology for Agriculture and ForestryĀ (2022), pp. 169-173, doi:10.1109/MetroAgriFor55389.2022.9965040.Ā Ā IEEE Link
- Chemical Composition of Gas and Particle Phase Products of Toluene Photooxidation Reaction under High OH Exposure Condition, Y.-S. Lau, M.-N. Chan, H.-Y. Poon, Y. Tan, S.-C. Lee, J. Li and K.-F. Ho,Ā AtmosphereĀ (2021)Ā 12, 915.Ā Ā MDPI Link
- Air Quality Observations in the East of Quito, Ecuador in 2018-2020: Comparisons between Pre- and Post-COVID-19 Conditions, M. Cazorla, inĀ WIT Transactions on Ecology and the EnvironmentĀ (2021)252, pp. 177-185.Ā OnlineLink
Specifications
Spec Sheet
| Measurement Principle | UV Absorption at 254 nm, single beam |
| Certifications | Federal Equivalent Method (FEM), 0-500 ppb for 10-40Ā°C: EQOA-0410-190 CE |
| Linear Dynamic Range | 0 to 20 ppm |
| Resolution | 0.1 ppb |
| Precision (1Ļ; rms noise) | Greater of 1.5 ppb or 2% of reading |
| Accuracy | Greater of 1.5 ppb or 2% of reading |
| Limit of Detection (2Ļ) | 3.0 ppb (in 10-s measurement mode) |
| NIST-Traceable Calibration | Yes |
| Measurement Interval | 10 s (Data averaging options: 1 min, 5 min, 1 hr) |
| Flow Rate (nominal) | ~1 Liter/min |
| Flow Rate Requirement | >0.6 L/min |
| Baseline Drift | < 2 ppb/day < 5 ppb/year |
| Sensitivity Drift | < 1%/day < 3%/year |
| Measurement Time, Frequency | 10 s, 0.1 Hz |
| Response Time, 100% of Step Change | 20 s, 2 points |
| Averaging Times | 1 min, 5 min, 1 hr |
| Internal Data Logger Capacity | 16,383 lines (10-s meas. = 1.9 days; 1-min avg = 11 days; 5-min avg = 1.9 mo; 1-hr avg = 1.9 yr) |
| SD Card Logger Capacity | Minimum 2 GB (> 5-year capacity for 10-s measurement mode) |
| Ozone Units | ppb, ppm, pphm, Āµg m-3, mg m-3 |
| Pressure Units | mbar, torr |
| Temperature Units | Ā°C, K |
| T and P Corrected | Yes |
| Operating Temperature Range | 0 to 50 Ā°C standard; optional -20 to 50 Ā°C with low temperature modifications (pump and lamp heater cold-weather package) |
| Operating Altitude Range | ~0-13.5 km (150-1,013 mbar) standard; optional ~0-25 km (30-1,013 mbar) with upgraded pressure sensor |
| Power Requirement; Supplied by battery or 110/220 VAC Power Pack |
11-14 V DC or 120/240 V AC, 600 mA, 7.2 watt (6.2 watt with cell heater unplugged) |
| Size | 3.7H x 8.5W x 11.8L inches (9.5 x 21.5 x 30 cm) |
| Weight | 5.5 lb (2.5 kg); 2.8 lb (1.3 kg) without instrument case |
| Analog Inputs for Internal Logging of Other Instruments | 3 Analog Inputs, 0-2.5 V; For example could log external T, P and RH |
| Data Outputs | RS232, 0-2.5 V Analog, LCD Display |
| Data Transfer Baud Rates | 2400, 4800, 19200 |
| Output Ranges | User-Defined Scaling Factor in Menu |
| DewLineā¢ | Yes |
| Quiet Long-Life Internal Air Pump | Yes |
| Flow Meter | Yes |
| Options | External Particle Filter; Serial-to-USB Converter; Cold-Weather Package, -20 to 50Ā°C (pump, lamp heater); High-Altitude Upgrade (25 km); Rack-Mount Case Configuration |
Downloads
Support
Call Us
+1 (303) 273-0559
Tech Support
Open a Ticket
Create a Support Ticket
Instructions
Please use the following web form to open a service ticket for calibration and/or repairs on your instrument, and be sure to provide its serial number.
If you are experiencing problems with your instrument, it will greatly aid our troubleshooting efforts if you would:
- Use the serial connection of the instrument to capture sample data,
- Save the (raw, unmodified) data in a text file,
- Upload the file as an attachment and submit it with your service ticket.
Case Studies
Case Studies for this product are coming soon!
"My research team uses five 2B Technologies Model 202 and 205 ozone analyzers and a Model 306 ozone calibration source. These instruments have been central to my research program on indoor ozone chemistry. They are easy to use, robust, and have required little maintenance over several years."
