Calibration - Slope And Offset; Temperature And Pressure Compensation (Tpc) Feature - Teledyne 100E Instruction Manual

Model 100E Instruction Manual
rejection, but poor response times. Conversely shorter filter lengths result in poor signal
to noise rejection, but quicker response times.

10.7.2. Calibration - Slope and Offset

Calibration of the analyzer is performed exclusively in software. During instrument
calibration (Chapters 7 and 8) the user enters expected values for zero and span through
the front panel keypad and commands the instrument to make readings of sample gases
with know concentrations of SO
compared to the expected values as input. With this information the software computes
values for instrument both slope and offset and stores these values in memory for use in
calculating the SO
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Instrument slope and offset values recorded during the last calibration can be viewed by
pressing the following keystroke sequence
SAMPLE RANGE = 500.000 PPB
< TST TST > CAL
SAMPLE
TIME = HH:MM:SS
< TST TST > CAL
SAMPLE
PMT TEMP=0.0C
< TST TST > CAL
SAMPLE
BOX TEMP=0.0C
< TST TST > CAL

10.7.3. Temperature and Pressure Compensation (TPC) Feature

As explained in the Theory of Operations (Section 10) changes in temperature can
significantly effect the amount of fluoresced UV light generated in the instruments
sample chamber. To negate this effect the Model 100E maintains the sample gas at a
stable, raised temperature.
Pressure changes can also have a noticeable, if more subtle, effect on the SO
concentration calculation. To account for this, the Model 100E software includes a feature
which allows the instrument to compensation of the SO
ambient pressure.
045150102 Rev XB1
. The readings taken are adjusted, linearized, and
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concentration of the sample gas.
SO2 = X.XX
SETUP
SO2 = X.XX
SETUP
SO2 = X.XX
SETUP
SO2 = X.XX
SETUP
Theory Of Operation
SAMPLE
RCELL TEMP=0.0C
< TST TST > CAL
SAMPLE
HVPS 553 VOLTS
< TST TST > CAL
SAMPLE
OFFSET=XX.X MV
< TST TST > CAL
SAMPLE
SLOPE=XXX
< TST TST > CAL
calculations based on changes in
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SO2 = X.XX
SETUP
SO2 = X.XX
SETUP
SO2 = X.XX
SETUP
SO2 = X.XX
SETUP
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