Serinus 44  User Manual  3.0 
 
 
mode is set in Cycle Time (refer to Section 3.4.10). 
While the instrument is still in the warm-up period (refer to Section 3.1) 
the Cal. Mode cannot be changed from Measure mode. 
 
 
3.4.10.2   Timed Mode 
These items appear in the Calibration Menu when Calibration Type is set to Timed. 
Enter the date for the next calibration to start. 
Enter the time that calibration will be performed. The time is set using a 
24 hour clock. 
This field indicates the delay period; once the specified amount of time 
has lapsed the calibration will automatically run again. The user can edit 
this field (from 1 to 20,000 units). 
This is where the user can define the type of units for the Repeat delay 
period. For example: A repeat of “3” and units of “Days” means that a 
calibration will automatically be performed every three days. 
When Enabled the instrument will automatically perform a Span 
Calibrate NOx at the end of the Cycle Time and adjust the gain based 
on the Span Level.  
When Disabled it will do a precision check only, no adjustment is made. 
Enter the concentration of span gas expected. Used when the Span 
Compensation is Enabled. 
 
3.4.11  Pressure Calibration Menu 
Main Menu  Calibration Menu  Pressure Calibration Menu 
Entering this menu will set the valves to the pressure calibration configuration and will disable the 
ozone generator; leaving the menu will restore the valves to normal operation and enable the ozone 
generator (refer to Section 5.2). 
The zero point for the calibration. Activating this item will open a dialog 
box of instructions. 
The high point for the calibration. Activating this item will open a dialog 
box of instructions. 
Select the units that the pressure will be displayed in (torr, PSI, mBar, 
ATM or kPa). 
The current ambient pressure. 
The current ambient pressure displayed as a raw voltage. 
The current pressure in the reaction cell. 
The current reaction cell pressure displayed as a raw voltage. 
The current pressure in the auxiliary valve manifold. 
The current auxiliary valve manifold pressure displayed as a raw 
voltage.