K3.1.142e Manual NitroFlow Lab  - 36 - 
Calibrate the flow by entering the flow measured with an 
external flow meter. 
Replace Filter  When a filter has been replaced during maintenance, 
this button can be touched and the countdown for the 
new filter is set. System asks for confirmation. In 
maintenance screen 1/5 the filter lifetime should read 
8000 hr. 
Replace O2 cell  When an O2 cell has been replaced during 
maintenance, this button can be touched and a new 
date to replace the O2 cell is set. System asks for 
confirmation. In maintenance screen 1/5 the O2 lifetime 
should read 3 year ahead from date of changing. 
6.3.7 Data logging menu  
Access:  Press data logging menu button  in settings screen 
(refer to § 6.3) 
 
Function:  Read the logged (saved) data 
 
Alarms as well as status of the sensors are saved on the SD-card. The time 
between the logging (saving) of this data to the memory card can be 
chosen in the data-logging menu. 
 
 
 
Button Selection Result 
Interval   30-3600  Time in seconds between the logging 
(saving) of alarm data