Operation
Calibration Factors Menu
3-16
Model 15
i
Instruction Manual
Thermo Fisher Scientific
AVERAGING TIME:
CURRENTLY: 30 SEC
SET TO: 10 SEC ?
©ª
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
The Calibration Factors menu displays the calibration factors, which are
used to correct the HCl concentration readings that the instrument
generates using its own internal calibration data. The screens below show
the calibration factors menu in single mode and dual/auto range modes.
The only difference between the screens are the words “HI” and “LO” to
indicate which range is displayed.
Normally, the calibration factors are calculated automatically using the
functions described in “
Calibration Menu
” later in this chapter. However,
the calibration factors can also be set manually using the functions in this
menu.
●
In the Main Menu, choose
Calibration Factors
.
The background correction is determined during zero calibration. The HCl
background is the amount of signal read by the analyzer while sampling
zero air. The background signal is electrical noise. Before the analyzer sets
the HCl reading to zero, it stores this value as the HCl background
correction.
The Background screen is used to perform a manual adjustment of the
instrument’s zero reading. Before performing a manual zero adjustment,
allow the analyzer to sample zero air until stable readings are obtained.The
first line of the display shows the current HCl reading. This reading is the
HCl background signal. The second line of the display shows the HCl
background correction that is stored in memory and is being used to
correct the HCl reading.
Calibration Factors
Menu
HCl Background
CALIBRATION FACTORS:
>BKG 0.0
COEF 1.000
RESET USER CAL DEFAULTS
RANGE AVG DIAGS ALARM
CALIBRATION FACTORS:
>BKG 0.0
HI COEF 1.000
LO COEF 1.000
RESET USER CAL DEFAULTS
RANGE AVG DIAGS ALARM
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