Sustainable Construction
Lorem ipsum dolor...
The new Model 211 Scrubberless Ozone Monitor uses the proven ultraviolet (UV) absorption method in combination with our patented (US Patent No. 8,395,776 B2) gas-phase scrubber technology to measure ozone virtually free of interferences. The instrument is ideally suited for measurements of ozone in heavily polluted air where interference is likely from particulates, mercury, or VOCs. The Model 211 combines the stability of our proven dual beam ozone monitors with our selective scrubber technology to provide accurate ozone measurements in the most polluted air. The enhanced optical path length of 30 cm provides a precision of better than 0.5 ppb for 10-second measurements, and the instrument can output new ozone measurements as often as every 2 seconds. The Model 211 now comes with SD flash card memory as a standard feature. The Model 211 Scrubberless Ozone Monitor has been designated by the EPA as a Federal Equivalent Method (FEM): EQOA–0514–215.
Features
Specifications
Measurement Principle | UV Absorbance at 254 nm; Dual Beam |
Federal Equivalent Method (FEM) | Yes, EQOA–0514–215 |
Linear Dynamic Range | 0-2,000 ppb (0-2 ppm) |
Resolution | 0.1 ppb |
Precision (1σ rms noise) | Greater of 0.5 ppb or 1% of reading for 10-s average |
Accuracy | Greater of 1.0 ppb or 2% of reading |
Limit of Detection (2σ) | 1.0 ppb |
NIST-Traceable Calibration | Yes |
Flow Rate (nominal) | ~2 Liter/min |
Flow Rate Requirement | >1.2 L/min |
Baseline Drift | < 1 ppb/day |
Sensitivity Drift | < 0.5%/day |
Response Time, 100% of Step Change | 20 s for 10-s averaging; 4 s for 2-s measurement |
Measurement and Averaging Times | 2 s, 10 s, 1 min, 5 min, 1 hr |
Internal Data Logger Capacity | 16,383 lines (10-s avg. = 1.9 days; 1-min avg = 11 days; 5-min avg = 1.9 mo; |
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 | 10 to 50 °C |
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; | 11-14 V dc or 120/240 V ac, 1 A at 12 V, 12 watt |
Size | Rackmount: 17" w x 14.5" d x 5.5" h (43 x 37 x 14 cm) |
Weight | 14.7 lb (6.7 kg) |
Data Outputs | RS232, 0-2.5 V Analog, optional 4-20 mA Analog, optional USB adapter |
Data Transfer Baud Rates | 2400, 4800, 19200 |
Output Ranges | User-Defined Scaling Factor in Menu |
DewLine™ | Yes |
Long-Life Pump | Yes, 20,000 hr |
Flow Meter | Yes |
Options | Battery; External Particle Filter; Bluetooth; External Serial-to-USB Adapter; 4-20 mA Current Output; Lamp Heater; High-Altitude Upgrade (pressure sensor) |