Sheet #685u – ATF function
Version 1.04a  User guide ATEQ 5000 series Page 1/1 
 ATF FUNCTION 
1. PRINCIPLE 
This function is only available with the units with a time: Pa/s, cm
3
/min, cm
3
/s, cm
3
/h, etc.. 
This is to absorb the important leak variations at the starting of the measurement, by the 
programmed time. 
Example: for the same part, test time = 5s, ATF = 2s (final leak about 8 PA/s). 
Without ATF 
With ATF 
2. PROCEDURE 
Check the function is not hidden. 
Then press the 
 key, the cursor switch 
to the right hand. 
Remind: this function appears only with 
flow units, else it's not displayed.
2T
(70%6+105
Ź ATF    :  No 
 More functions… 
By using the   arrows, select 
"Yes" and validate with the 
 key. 
2T(70%6+105
Ź ATF    :  Yes 
 More functions… 
Then adjust the “ATF TIME” to enter the 
absorb time parameter. 
2T
(70%6
#6(
Ź ATF TIME  :  2.0  s