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2B-Technologies - Model POM -Personal Ozone Monitor
2B Tech has taken the next step in miniaturization of UV-based ozone monitors by developing the Personal Ozone Monitor or "POM". The basic POM unit has dimensions of 4 x 3 x 1.5 inches and weighs only 0.8 lb / 1.0 lb without/with battery (360 g / 450 g ). It has a built in GPS so that ozone measurements may be logged continuously along with geographic location. By folding the optical path in the shape of a "U," it was possible to achieve the same path length in the POM as in the Models 202, 205, and 106-L and thus have similar precision and accuracy (~1.5 ppb). The POM has been designated by the US EPA as a Federal Equivalent Method (FEM) for ozone: EQOA–0815–227.
- Personal exposure monitoring for studies of health effects of air pollutants
- Health and safety monitoring at industrial sites using ozone
- 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
This note describes a study in which the POM was flown on a drone above Chesapeake Bay, to investigate the chemistry inside the plume of a large freighter at sea. The versatility of the POM was showcased in this work, which also made use of another POM to make complementary measurements at a ground station nearby.
- Measurement Principle: UV Absorption at 254 nm
- Federal Equivalent Method (FEM): Yes, EQOA–0815–227
- Linear Dynamic Range: 0 ppb to 10 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 (10-s measurement mode, with default adaptive filter settings)
- NIST-Traceable Calibration: Yes
- Measurement Intervals: Measurement mode: 10 s (Fast mode: 2 s)
- Flow Rate (nominal): ~0.8 Liter/min
- Flow Rate Requirement: >0.5 L/min
- Baseline Drift: < 2 ppb/day
- < 5 ppb/year
- Sensitivity Drift: < 1%/day
- < 3%/year
- Measurement Time, Frequency: 10 s, 0.1 Hz (Fast mode: 2 s, 0.5 Hz)
- Response Time, 100% of Step Change: For 10-s output: 20 s, 2 points (For 2-s output: 4 s, 2 points)
- Averaging Times: 1 min, 5 min, 1 hr
- Data Storage: 8,192 lines (2-s fast mode ~4.6 hr; 10-s meas. mode ~1 day; 1-min avg ~6 days; 5-min avg ~1 mo; 1-hr avg ~1 yr)
- Ozone Units: ppb
- Pressure Units: torr
- Temperature Units: K
- T and P Corrected: Yes
- Operating Temperature Range: 0 to 50 °C
- Operating Altitude/Pressure Ranges: ~0-13.5 km (150-1,013 mbar) [modifications for higher altitudes available as an option]
- Power Requirement;
- Supplied by battery or 110/220 VAC Power Pack: 7-12 V dc, nominally 250 mA at 12 V, 3.0 watt
- External Battery: 7.4 Volt, 1.6 amp hour, Lithium Ion Battery, 5-8 hr
- Size: without GPS and battery: 4.0 x 3.0 x 1.5 inches (10.2 x 7.6 x 3.8 cm)
- add GPS: 5.0 x 3.0 x 1.5 in (12.7 x 7.6 x 3.8 cm)
- Weight: without battery: 0.8 lb (0.36 kg)
- with battery: 1.0 lb (0.45 kg)
- Data Transfer Baud Rate: 19200
- DewLine™: Yes
- GPS: Yes
- Options: Analog output; wall-mount bracket; modifications for higher altitude operation
- POM™ Personal Ozone Monitor™
- AC Power Adapter (100-240 VAC to 12 VDC) with Country-Specific Plug
- Cigarette Lighter Adapter
- 7.4 V Lithium Ion Battery
- Battery Charger
- Serial Port Cable
- USB Cable
- Zeroing Cartridge
- USB stick with Operation Manual, 2B Display Software and USB Driver
- Global Positioning System (GPS)
- Instrument Birth Certificate
- Calibration Data and NIST-Traceable Calibration Certificate
- One-Year Warranty