Teledyne t320u Manuale Utente

Pagina di 426
Overview of Operating Modes 
Teledyne API – Model T300/T300M CO Analyzer 
94 
To view and clear warning messages: 
 
Figure 4-3: 
Viewing and Clearing T300/T300M WARNING Messages 
4.2. CALIBRATION MODE 
Pressing the CAL button switches the T300/T300M into calibration mode.  In this mode 
the user can calibrate the instrument with the use of calibrated zero or span gases. This 
mode is also used to check the current calibration status of the instrument. 
  For more information about setting up and performing standard calibration 
operations or checks, see Section 9. 
  For more information about setting up and performing EPA equivalent calibrations, 
see Section 10.  
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.   
For information on using the automatic calibration feature (ACAL) in conjunction with 
the one of the calibration valve options, see Section 9.4. 
I
MPORTANT
 
I
MPACT ON 
R
EADINGS OR 
D
ATA
 
It is recommended that this span calibration be performed at 80-90% of 
full scale of the analyzer’s currently selected reporting range. 
EXAMPLES: If the reporting range is set for 0 to 50 ppm, an appropriate 
span point would be 40-45 ppm. If the of the reporting range is set for 0 
to 1000 ppb, an appropriate span point would be 800-900 ppb. 
06864B DCN6314