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Ambient Ozone Monitor-Model 202

  • Accurate and precise measurements of ozone
  • Ranging from low ppb (precision of ~1.5 ppb) up to 250,000 ppb (0-250 ppm)
  • Based on technique of absorption of UV light at 254 nm
  • Flash card memory and a quiet
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Description

The 2B Technologies Model 202 Ozone Monitor™ is designed to enable accurate and precise measurements of ozone ranging from low ppb (precision of ~1.5 ppb) up to 250,000 ppb (0-250 ppm) based on the well-established technique of absorption of UV light at 254 nm. Flash card memory and a quiet, long-life internal air pump are now provided standard on the Model 202 Ozone Monitor. The Model 202 Ozone Monitor™ is lightweight (5.5 lb., 2.5 kg.) and has a low power consumption (12V DC, 0.60 amp, 7.2 watt) relative to conventional instruments and is therefore well suited for applications such as:

  • Vertical profiling using balloons, kites, RPVs and light aircraft where space and weight are highly limited
  • Long-term monitoring at remote locations where power is highly limited
  • Urban arrays of ground-based detectors
  • Personal exposure monitoring for studies of health effects of air pollutants
  • Environmental health and safety monitoring
  • Laboratory studies of the effects of ozone exposure on materials and organisms.

The Model 202 has been designated by the EPA as a Federal Equivalent Method (FEM): EQOA-0410-190.

Schematic Diagram

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Options

  • GPS for continuous logging of latitude, longitude, and altitude (for 10-s data mode and above)
  • Bluetooth for wireless data transmission
  • Rechargeable lithium-ion battery provides 12 hours of continuous operation
  • External particle filter
  • Serial-to-USB adapter
  • Cold-weather package (pump, lamp heater for use down to -20 degrees C)
  • High-altitude upgrade (pressure sensor for use up to 25 km altitude)
  • Low-power option
  • Extra-long-life internal air pump
  • 4-20 mA analog current output
  • Rack-mount case configuration

Application Note

The Model 202 Ozone Monitor is ideal for use in field deployments in remote areas, in situations requiring low weight/small size/low power consumption, and where accurate and precise FEM-quality measurements are desired.  This application note describes one such study, which used a Model 202 to compare measurements in the Chesapeake Bay region (shown in red below) with other nearby monitoring stations.  Ozone at the site often exceeds the U.S. National Ambient Air Quality Standards and causes the State of Maryland to be in noncompliance.  A goal of the study was to understand the causes and mechanisms of the high ozone events. Read more in the summary below.

Industrial Technical Services from Mississauga, Ontario is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels.

 

 

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Download : Model 202 Application Note: Chesapeake Bay Ozone Study - Ozone at the Land/Water Interface

Specifications:

Measurement Principle UV Absorption at 254 nm
Federal Equivalent Method (FEM) Yes, EQOA-0410-190
Linear Dynamic Range 0 to 250 ppm
Resolution 0.1 ppb
Precision (1σ; rms noise) Greater of 1.5 ppb or 2% of reading
Accuracy Greater of 1.5 ppb or 2% of reading
Limit of Detection (2σ) 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, µg m-3, mg m-3
Pressure Units mbar, torr
Temperature Units °C, K
T and P Corrected Yes
Operating Temperature Range 0 to 50 °C standard; optional -20 to 50 °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 3.5 x 8.5 x 11 inches (9 x 21 x 29 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: (Optional 4-20 mA Current, External USB Converter; request quote)
Data Transfer Baud Rates 2400, 4800, 19200
Output Ranges User-Defined Scaling Factor in Menu
DewLine™ Yes
Quiet Long-Life Internal Air Pump Yes
Flow Meter Yes
Options Battery; External Particle Filter; Serial-to-USB Converter; GPS (for 10-s data mode and above); Bluetooth; 4-20 mA Current Output; Cold-Weather Package (pump, lamp heater); High-Altitude Upgrade; Extra-Long-Life Internal Air Pump; Low-Power Option; Rack-Mount Case Configuration
Upgradable to Model 205 Dual Beam Yes

System Includes

  • Model 202 Ozone Monitor with quiet, long-life internal air pump
  • AC Power Adapter (100-240 VAC to 12 VDC) with Country-Specific Plug
  • Flash Card Memory for virtually unlimited data storage
  • SD Card
  • SD Card Reader
  • Cigarette Lighter Adapter
  • Zeroing Cartridge
  • Operation Manual on USB Stick
  • Calibration Data and NIST-Traceable Calibration Certificate
  • Instrument Birth Certificate
  • One-Year Warranty

Industrial Technical Services from Mississauga, Ontario is a single source Instrumentation and Automation company. We provide certified calibrations, PLC programming, custom controls and Panels.

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