Calibration - Slope And Offset - Teledyne 400E Instruction Manual

Model 400E Ozone Analyzer
Instruction Manual
amount. Second the instantaneous concentration must exceed the average in the
long filter by a portion, or percentage, of the average in the long filter.

10.5.2. Calibration - Slope and Offset

Calibration of the analyzer is performed exclusively in software. During instrument
calibration (see Sections 7 and 8) the user enters expected values for Zero and
Span via the Front Panel Keypad and commands the instrument to make readings
of calibrated sample gases for both levels. The readings taken are adjusted,
linearized, and compared to the expected values. With this information the
software computes values for instrument slope and offset and stores these values
in memory for use in calculating the O
The Instrument slope and offset values recorded during the last calibration can be
viewed by pressing the following keystroke sequence:
P/N 04316 Rev: B
SAMPLE RANGE = 500.0 PPB
< TST
TST > CAL
SAMPLE TIME = 16:23:34
< TST TST > CAL
SAMPLE OFFSET = 0.000
< TST TST > CAL
SLOPE = 1.000
SAMPLE
< TST
TST > CAL
Concentration of the sample gas.
3
O3 =XXX.X
SETUP
O3 =XXX.X
SETUP
O3 =XXX.X
SETUP
O3 =XXX.X
SETUP
THEORY OF OPERATION
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