| Measurement Principle |
UV Absorption at 254 nm; Dual Beam |
| Federal Equivalent Method (FEM) |
Yes, 0-500 ppb for 10-40Ā°C: EQOA-0410-190 |
| Linear Dynamic Range |
0 to 250 ppm |
| Resolution |
0.1 ppb |
| Precision (1Ļ rms noise) |
Greater of 1.0 ppb or 2% of reading for 10-s average |
| Accuracy |
Greater of 1.0 ppb or 2% of reading |
| Limit of Detection (2Ļ) |
2.0 ppb for 10-s average |
| NIST-Traceable Calibration |
Yes |
| Measurement Interval |
2 s (Data averaging options: 10 s, 1 min, 5 min, 1 hr) |
| Flow Rate (nominal) |
~1.8 Liter/min |
| Flow Rate Requirement |
>1.2 L/min |
| Baseline Drift |
< 1 ppb/day
< 3 ppb/year |
| Sensitivity Drift |
< 1%/day
< 3%/year |
| Measurement Time, Frequency |
2 s, 0.5 Hz |
| Response Time, 100% of Step Change |
4 s, 2 points |
| Measurement and Averaging Times |
2 s, 10 s, 1 min, 5 min, 1 hr |
| Ozone Units |
ppb, pphm, ppm, Āµg m-3, mg m-3 |
| Pressure Units |
mbar, torr |
| Temperature Units |
Ā°C, K |
| T and P Corrected |
Yes |
| Operating Temperature Range |
0 to 50Ā°C standard; optional -20 to 50Ā°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 |
12 V dc or 120/240 V ac, nominally 650 mA at 12 V, ~8 watt (~7 watt with cell heater unplugged) |
| Size |
3.7H x 8.5W x 11.8L inches (9.5 x 21.5 x 30 cm) |
| Weight |
5.8 lb (2.6 kg); 3.1 lb (1.4 kg) without instrument case |
| Internal Data Logger Capacity |
16,383 lines (2-s fast measurement mode = 9.1 hr; 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 |
> 2 GB (> 5-year capacity for 10-s averaging mode) |
| 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; request quote) |
| Data Transfer Baud Rates |
2400, 4800, 19200 |
| Output Ranges |
User-Defined Scaling Factor in Menu |
| DewLineā¢ |
Yes |
| Quiet, Long-Life Internal Air Pump |
Yes |
| Flow Meter |
Yes |
| Options |
Battery; External Particle Filter; Serial-to-USB Adapter; GPS (for 10-s data mode and above); Bluetooth; 4-20 mA Current Output; Cold-Weather Package, -20 to 50Ā° C (pump, lamp heater); High-Altitude Upgrade 0-25 km (pressure sensor); Extra-Long-Life, Low-Temperature Internal Air Pump; Low-Power Option; Rack-Mount Case Configuration |
