ATEQ D520 - Calculation of the Automatic Thresholds

Chapter 4 – Functions of the instrument
UM-22100H-U User manual ATEQ D520 Page 90/122
3.3. CALCULATION OF THE AUTOMATIC THRESHOLDS
This function enables the programming of the monitoring thresholds for the maximum
and minimum pressure in relation to the adjustment of the chosen regulator.
The values of the automatically calculated thresholds are of plus or minus 20 % of the
value measured.
The calculation and the automatic editing of the thresholds is done on the active
program.
Confirm the REGULATOR
ADJUST special cycle.
MAIN
MENU
RUN PROG. : 001
PARAMETERS
SPE CYCLE : Regul.
Press on the START key to
launch a special cycle.
CYCLE/P
r:
001
PRESS = 17 mbar
REGULATOR ADJUST
Eventually adjust the test
pressure with the regulator
handle or with the UP and
DOWN keys if fitted with an
electronic regulator (option).
_
+
CYCLE/P
r:
001
PRESS = 20 mbar
COMPUTE LIMITS
REGULATOR ADJUST
At this moment, when the key
is turned to the ACCESS
position, the question:
COMPUTE LIMITS
appears on the screen.
CYCLE/P
r:
001
PRESS = 20 mbar
REGULATOR ADJUST
Confirm the calculation with
the ENTER key, the
instrument computes the
thresholds and enters them in
the program parameters cycle.
COMPUTING LIMITS
When the operation is
finished, press on the RESET
key to stop the special cycle.
CYCLE/P
r:
001
PRESS = 20 mbar
READY
Note: in the event of vacuum tests, the negative pressure thresholds keep their
mathematical "order".
PRESSURE MEASUREMENT
VACUUM MEASUREMENT
0
PRE-FILL
THRESHOLD
PRE-FILL
THRESHOLD
MINIMUM
REJECT LEVEL
MAXIMUM
REJECT LEVEL
0
MINIMUM REJECT
LEVEL
MAXIMUM REJECT
LEVEL