POM™, Personal Ozone Monitor

The World's Smallest Ozone Monitor

EPA Federal Equivalent Method (FEM)

POM Personal Ozone Monitor

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.



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 ppb
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 Range: ~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

System Includes