Teledyne T200, Руководство по эксплуатации, Страница: 80 / 425

Overview of Operating Modes Teledyne API
– T200 NO/NO
2
/NO
X
Analyzer Operation Manual
78
4.2. CALIBRATION MODE
The CAL button switches the analyzer into calibration mode. In conjunction with
introducing zero or span gases of known concentrations into the analyzer, the user can
adjust and recalculate the slope (gain) and offset of the measurement range. CAL mode
is also used to check the current calibration status of the instrument.
If the instrument includes one of the available zero/span valve options, the SAMPLE
mode display will also include CALZ and CALS buttons. Pressing either of these
buttons also puts the instrument into calibration mode.

The
CALZ
button is used to initiate a calibration of the analyzer’s zero point using
internally generated zero air.

The
CALS
button is used to calibrate the span point of the analyzer’s current
reporting range using span gas.
Note It is recommended that this span calibration be performed at 80% of full scale of
the
analyzer’s currently selected reporting range.
EXAMPLES:
If the reporting range is set for 0 to 500 ppb, an appropriate span point would be
400 ppb.
If the of the reporting range is set for 0 to 1000 ppb, an appropriate span point
would be 800 ppb.
Due to their critical importance and complexity, calibration operations are described in
detail in other sections of the manual:

Section 9 details setting up and performing standard calibration operations or
checks.

Section 10 provides references for guidance in setting up and performing EPA
protocol calibrations.
For information on using the automatic calibrations feature ( ACAL ) in conjunction with
the one of the calibration valve options, see Sections 9.4.3 and 9.5.
I
MPORTANT
I
MPACT ON
R
EADINGS OR
D
ATA
To avoid inadvertent adjustments to critical settings, activate calibration security
by enabling password protection in the SETUP
– PASS menu (Section 5.5).
06858E DCN7057