Internal UV Ozone Photometer
Page 9-2
the tube determines the ozone concentration according to the
following equation:
Equation 9-1
Where:
= Absorption Coefficient of ozone at 254nm and with
the sample gas at 0°C and 760 mmHg = 308
L
= Optical Path Length = 31.6 cm
I
= Sample Count
(Conditioned detector output for sample gas)
I
o
= Reference Count
(Conditioned detector output for clean air)
T = Sample Temperature (°C)
P = Sample Pressure (mmHg)
Note that the temperature “T” and pressure “P” are included in
Equation 9-1. The on-board microcontroller measures the
temperature and pressure of the sample gas in order to perform
the automatic temperature/pressure correction of the ozone
reading.
Ozone PPB
T
P
L
I
I
o
(
)
ln
273
273
760
10
9
Summary of Contents for 2010D
Page 1: ...MODEL 2010D GAS DILUTION CALIBRATOR OPERATIONS MANUAL I N S T R U M E N T S...
Page 3: ......
Page 20: ...System Operations Page 3 2 Figure 3 1 The Model 2010D Front Panel...
Page 42: ...Installation Page 4 15 Figure 4 1 Rear Panel...
Page 63: ...Operation Page 5 7 Figure 5 5 The Dilution Status Screen Figure 5 6 The Ozone Status Screen...
Page 177: ...MODEL 2010D GAS DILUTION CALIBRATOR SCHEMATICS...
Page 178: ......