- Ozone measured 0-250 ppm by UV absorption at 254 nm, dual beam
- Quiet long-life internal air pump (now standard)
- Low power consumption (~8 watt)
- Internal data logger (EEPROM), logs 16,383 lines of data
- Real-time clock
- Both serial and user-scalable analog voltage outputs (4-20 mA current output optional)
- Flash card memory (SD card) for virtually unlimited, portable data storage
- Three 0-2.5 VDC analog inputs for logging other measurements, such as external temperature, pressure, and humidity
- Convenient user interface to microprocessor, including calibration parameters (gain and zero)
- Selectable measurement time of 2 s or data averaging times of 10 s, 1 min, 5 min and 1 hr (custom averaging times available)
- DewLine™ for elimination of any water vapor interference, a unique feature of 2B Tech instruments
- Dual beam feature allows for heightened precision and improved baseline stability for applications where high spatial resolution is required.
Measurement Principle | UV Absorption at 254 nm; Dual Beam |
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 1.0 ppb or 2% of reading for 10-s average |
Accuracy | Greater of 1.0 ppb or 2% of reading |
Limit of Detection (2σ) | 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, 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 |
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