Thermo Scientific 43i, Инструкция по эксплуатации

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Operation
Averaging Time
Thermo Fisher Scientific Model 43i Trace Level-Enhanced Instruction Manual 3-15
The Averaging Time defines a time period (1 to 300 seconds) during which
SO
2
measurements are taken. The average concentration of the readings are
calculated for that time period. The front panel display and analog outputs
are updated every 10 seconds for averaging times between 10 and 300
seconds. For averaging times of 1, 2, and 5 seconds, the front panel display
and analog outputs are updated every second. An averaging time of 10
seconds, for example, means that the average concentration of the last 10
seconds will be output at each update. An averaging time of 300 seconds
means that the moving average concentration of the last 300 seconds will
be output at each update. Therefore, the lower the averaging time the faster
the front panel display and analog outputs respond to concentration
changes. Longer averaging times are typically used to smooth output data.
The Averaging Time screen for the single range mode is shown below. In
the dual and auto range modes, an averaging time menu is displayed before
the averaging time screen. This additional menu is needed because the dual
and autorange modes have two averaging times (high and low). The
averaging time screen functions the same way in the single, dual, and
autorange modes. The following averaging times are available: 1, 2, 5, 10,
20, 30, 60, 90, 120, 180, 240, and 300 seconds.
In the Main Menu, choose Averaging Time .
AVERAGING TIME:
CURRENTLY: 30 SEC
SET TO: 10 SEC ?
©ª CHANGE VALUE
ƒ
SAVE VALUE
RANGE AVG DIAGS ALARM
Calibration factors are used to correct the SO
2
concentration readings that
the instrument generates using its own internal calibration data. The
Calibration Factors menu displays the calibration factors. The screens
below show the calibration factors menu in single mode and
dual/autorange modes. The only differences between the screens are the
words “HI” and “LO” to indicate which range is displayed.
Normally, the instrument is calibrated automatically using the commands
listed in the Calibration menu described later in this chapter. However, the
instrument can also be calibrated manually using the Calibration Factors
menu.
To manually calibrate the instrument, see “SO
2
Background” and “SO
2
Span Coefficient” that follows for more information.
In the Main Menu, choose Calibration Factors .
Averaging Time
Calibration
Factors Menu