- 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:Ā 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
Model 211-G Ozone Monitor
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
- 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)
- DewLineā¢ 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 monitoringĀ (EQOAā0514ā215)
- Convenient user interface, including remote operation via RS-232 communication
- NIST-traceable calibration (calibration suggested annually)
- Model 211-GĀ Ozone Monitor
- 2.5A power adapter
- Serial port cable (9PinF-9PinF)
- External ozone scrubber
- Hex ball driver (7/64″)
- SD card and SD card reader
- USB flash drive preloaded with operation manual and other useful documentation
- NIST-traceable calibration certificate
- External lithium-ion battery (not included with standard purchase)
- External particle filter
- Cold-weather upgradeĀ (-20 to 50Ā°C)
- Bluetooth upgrade for wireless data transmission
- 4-20 mA analog output upgrade
- Serial-to-USB adapter (not included with standard purchase)
- High-altitude upgrade (allows operation up to ~25 km)
- Coming Soon! Stay Tuned!
Specifications
Spec Sheet
| Measurement Principle | UV Absorbance at 254 nm; Dual Beam |
| Federal Equivalent Method (FEM) | Yes, 0-500 ppb for 20-30Ā°C: EQOAā0514ā215 |
| Ozone Scrubber Technology | Heated graphite scrubber (U.S. Patent No. 10,295,517) |
| Linear Dynamic Range | 0-500 ppb |
| Resolution | 0.1 ppb |
| Precision (1Ļ rms noise) | Greater of 0.5 ppb or 1% of reading for 10-s average |
| Accuracy | Greater of 1.0 ppb or 2% of reading |
| Limit of Detection (2Ļ) | 1.0 ppb for 10-s average |
| NIST-Traceable Calibration | Yes |
| Flow Rate (nominal) | ~2 Liter/min |
| Flow Rate Requirement | >1.2 L/min |
| Baseline Drift | < 1 ppb/day < 3 ppb/year |
| Sensitivity Drift | < 0.5%/day < 3%/year |
| Response Time, 100% of Step Change | 20 s for 10-s averaging; 4 s for 2-s measurement |
| Measurement and Averaging Times | 2 s, 10 s, 1 min, 5 min, 1 hr |
| Internal Data Logger Capacity | 16,383 lines (10-s avg. = 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 | 10 to 50 Ā°C |
| 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, 1.8 A at 12 V, 22 watt |
| Size | Rackmount: 17″ w x 14.5″ d x 5.5″ h (43 x 37 x 14 cm) |
| Weight | 13.4 lb (6.1 kg) |
| Data Outputs | LCD, RS232, SD data card, 0-2.5 V Analog, optional 4-20 mA Analog |
| Data Transfer Baud Rates | 2400, 4800, 19200 |
| Output Ranges | User-Defined Scaling Factor in Menu |
| DewLineā¢ | Yes |
| Long-Life Pump | Yes, 15,000 hr |
| Flow Meter | Yes |
| Options | Battery; External Particle Filter; Bluetooth; External Serial-to-USB Adapter; 4-20 mA Current Output; Lamp Heater; High-Altitude Upgrade, ~25 km (pressure sensor) |
Downloads
Support
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+1 (303) 273-0559
Tech Support
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Case Studies
Case Studies for this product are coming soon!
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.
Create a Support Ticket
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