Calibrators

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Model 714 NO2/NO/O3 Calibration Source
The Model 714 NO2/NO/O3 Calibration Source™ combines our Model 408 Nitric Oxide Calibration Source™ with our Model 306 Ozone Calibration Source™ to provide a highly portable transfer standard for three pollutant gases without the need for a compressed gas cylinder of nitric oxide.  Calibrated concentrations of O3 are produced by photolysis of oxygen, and calibrated concentrations of NO are produced by photolysis of nitrous oxide.  In addition, calibrated concentrations of NO2 are produced by gas-phase titration of NO with O3.  Calibrations sequences can be programmed in internal memory via a user-friendly touch screen interface, and the instrument can be operated remotely via a Modbus TCP/IP interface and Ethernet connection to a computer.

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Model 306 Ozone Calibration Source
The Model 306 Ozone Calibration Source is a highly portable ozone transfer standard that may be 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 4 L/min. No external air source is required. The instrument may be programmed to output a series of up to 10 ozone concentration steps with a chosen time interval. It also has a scheduler that permits the user to schedule an autocalibration once daily.  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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