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Model 202 Ozone Monitor

Features real-time ozone measurements produced every 10 seconds. Robust and versatile ozone monitor used for a variety of ambient ozone monitoring applications.
  • 0-250 ppm with 1.5 ppb precision
  • EPA-certified FEM (EQOA-0410-190)
  • Highly portable, low power, benchtop ozone monitor

Features real-time ozone measurements produced every 10 seconds. Robust and versatile ozone monitor used for a variety of ambient ozone monitoring applications.

  • 0-250 ppm with 1.5 ppb precision
  • EPA-certified FEM (EQOA-0410-190)
  • Highly portable, low power, benchtop ozone monitor

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Description

Measurement Principle UV Absorption at 254 nm, single beam
Federal Equivalent Method (FEM) Yes, 0-500 ppb for 10-40°C: 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 3.7H 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: (Optional 4-20 mA Analog Current output; 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, -20 to 50°C (pump, lamp heater); High-Altitude Upgrade (25 km); Extra-Long-Life Internal Air Pump; Lower-Power Option; Rack-Mount Case Configuration
Upgradable to Model 205 Dual Beam Yes

Product Details

  • 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