Internal UV Ozone Photometer Page 9-
Following are descriptions of the items that may be found in the
Photometer section of the Ozone Calibration Status screen:
Measured Ozone The Measured Ozone presents the average
ozone measured by the Photometer.
Lamp Temp The Control and Monitor values of the
Photometer lamp temperature is presented
here.
Lamp Current This is a unit-less number, between 0
and 5, that is proportional to the
current applied to and measured from the
Photometer's UV lamp.
Detector Voltage This is the voltage that is presented
to the 2010D's A/D converter after
signal conditioning the detector's
output. The voltage displayed here
should never approach zero or five
Volts.
Detector Count The detector count is the value that is
actually used in the Photometer equation
on Page 2. It is a unit-less value that
is derived by applying the Detector
Offset and Gain Parameters to the
Detector Voltage.
Sample Temperature This is the temperature of the sample
gas in the measurement tube as measured
by the Photometer's temperature sensor.
This is used to compensate the ozone
value for temperature variations.
Sample Pressure This is the pressure in the measurement
tube as measured by the Photometer's
pressure sensor. This is used to
compensate the ozone value for pressure
variations.
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