(1)Name of the instrument 
Ozone Analyzer, Model 49i
(2)People in charge of the instruments 
Gaowei
(3)Descriptions of the instrument 
Using UV Photometric technology, the Model 49i measures the amount of ozone in the air from ppb levels up to 200ppm.The Model 49i is a dual cell photometer, the concept adopted by the NIST for the national ozone standard. 
(4)Measurement accuracy and uncertainty 
Zero Noise 0.25 ppb RMS (60 second averaging time)
Lower Detectable Limit 0.50 ppb
Precision 1.0 ppb
Linearity +/-1% full scale
(5)Names of the measured species 
Surface Ozone 
(6)Units of the measured species 
PPB
(7)Measurement site 
Dongtan
(8)Measurement date (from Mon/day/year to Mon/Day/year) 
From 08/30/2009 to 09/22/2009