Ozone Monitor: Model 202 (EPA Federal Equivalent Method)
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The Model 202 Ozone Monitor is designed to enable accurate and precise (±1.5 ppb) measurements of ozone ranging from a few ppb to 100,000 ppb (0-100 ppm) based on the well established technique of UV absorbance at 254 nm. The Model 202 is light weight (2.1 kg.) and has a power consumption of only 4 watts. It can be used in almost any application where much larger ozone monitors have been used in the past and in many environments where measurements using traditional ozone monitors are impossible. The Model 202 has been certified by the EPA as a Federal Equivalent Method (FEM): EQOA-0410-190 The Model 202 has been used for the past decade in ozone monitoring networks of the U.S. National Park Service and National Forest Service. It also is widely used by NOAA, EPA, Environment Canada and the British Antarctic Survey for studies of ground-level ozone.
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Ozone Monitor: Model 205 Dual Beam
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The Model 205 Dual Beam Ozone Monitor™ was designed for even higher precision and faster response time than our popular Model 202. Data may be output as frequently as every 2 s, making it ideal for vertical profiling using balloons or aircraft measurements where high temporal resolution is required. For a given averaging time, the Model 205 has a higher precision (better than 1 ppb for 10 s averaging) and a more stable baseline than the Model 202. The Model 205 has all of the features of the Model 202 single beam instrument, including a real time clock; averaging times of 10 s, 1 min, 5 min and 1 h; an internal data logger; serial and analog data outputs; and a backup air pump to protect against data loss in the field.
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Ozone Monitor: Models 106 for Industrial Ozone Applications
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For industrial ozone applications, 2B Tech recently introduced the Model 106-L, 106-M and 106-H Ozone Monitors, where L, M and H refer to Low (0-100 ppm), Medium (0-1000 ppm) and High (0-20 wt%) ozone concentrations, respectively. These instruments use optical benches of different lengths in order to accomodate this extremely wide range of ozone concentation, spanning more than eight orders of magnitude. Additionally, the Model 106-H was designed with a flow through path that can be pressurized for in-line measurements with ozone generators. The Model 106 series uses our "Ozone Monitor on a Board" technology to make the instruments more compact and less expensive to manufacture, thus reducing the cost to our customers. The 106 series is also available for OEM applications (see panel below).
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Ozone Monitor on a Board™: Model OEM-106
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For OEM applications where users want to integrate their ozone monitor into a complex system such as an air pollution measurement package, we offer an "Ozone Monitor on a Board™" solution. The entire ozone monitor is mounted on a single printed cricuit board. The liquid crystal display and power switch may be removed and mounted outside the package if desired. The OEM board may be purchased with one of three different optical benches to optimize measurements in three different concentration ranges as follows:
OEM-106-L 0-100 ppm with 0.0001 ppm (0.1 ppb) resolution
OEM-106-M 0-1,000 ppm with 0.01 ppm resolution
OEM-106-H 0-20% by weight with 0.01% resolution
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Ozone Calibration Source: Model 306
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The Model 306 Ozone Calibration Source is a highly portable ozone transfer standard that may used to calibrate any ozone monitor or sensor. Ozone is generated at any chosen concentration in the range 0-1000 ppb in ozone-scrubbed ambient air at a volumetric flow rate of 3 L/min. No external air source is requried. The instrument may be programmed to output a series of up to 10 ozone concentration steps with a chosen time interval. The Ozone Calibration Source is provided with a NIST-traceable calibration, and the menu allows the user to calibrate the output to their own reference instrument. This Ozone Cal Source, which qualifies as an EPA transfer standard, is particularly useful for calibrating networks of ozone monitors in the field.
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Global Ozone (GO3) Project Instrument Package
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The GO3 Instrument Package provides everything needed for continuous measurements of ozone and meteorological parameters and the capability to upload those data to the GO3 database where measurements are displayed on an overlay in Google Earth. Measurements include ozone, temperature, barometric pressure, humidity, wind speed, wind direction and rainfall. The package includes the GO3 Ozone Monitor with a silent, long-life pump, Davis weather station, weather station mounting stand, notebook computer with data collection and uploading software installed, 50 feet of Teflon-lined Tygon inlet tubing, external ozone zeroing cartridge, external battery and charger for personal ozone monitoring, filter holder and pack of 10 Teflon particle filters, associated cables and power packs, and operating manuals.
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NO Monitor: Model 410
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The Model 410 Nitric Oxide Monitor measures NO in the range 0-2,000 ppb (0-2 ppm) with a precision of ±1.5 ppb. The NO Monitor is based on our patented method of continuous titration with ozone where the depletion of ozone is measured using the absolute method of UV absorbance. An advantage over the chemiluminescence method is that only infrequent calibration is required. The Model 410 may be used in combination with the Model 401 NO2 Converter to measure NOx and NO2 (by difference) in addition to NO. Measurements are made every 10 s, and data may be internally averaged for 1 min, 5 min or 1 hr and stored in the internal data logger. Because of it's smaller size and relatively low power requirement, the Model 410/401 combination is ideal for the application of roadside monitoring and for measurements of NO/NOx in remote locations.
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NO2 Converter: Model 401
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The Model 401 NO2 Converter™ is a portable, heated molybdenum converter for converting NO2 to NO. When air is sampled through the NO2 Converter, the Model 410 Nitric Oxide Monitor measures NOx (NO + NO2). As in chemiluminescence instruments, the NO2 concentration is obtained from the difference in the NOx and NO measurement. This approach to NO2 measurements has long been used in EPA-approved chemiluminescence instruments. The NO2 Converter also has an internal zeroing cartridge for measurement of the instrument baseline. Periodic measurements of NO, NOx and the zero are programmable through the Model 400 NO Monitor.
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NO Calibration Source: Model 408
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The Model 408 NO Calibration Source™ is a highly portable source of nitric oxide in the range 0-1000 ppb. The Model 408 may be used to calibrate any nitric oxide monitor, including those based on chemiluminescence. In addition to the calibration of instruments used for air monitoring, an important application is the calibration of nitric oxide breath analyzers such as the Aerocrine NIOX® and NIOX MINO® used for diagnosis and evaluation of asthma patients. The NO Cal Source produces nitric oxide in NO-scrubbed ambient air by photolysis of nitrous oxide provided by small N2O ("Whippit")cartridges or from a lecture bottle. The calibration gas is supplied at an output flow rate of 3 L/min. The instrument may be programmed to output a series of up to 10 NO concentration steps with a chosen time interval.
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