A&D Weighing AD-1690 - Manual (Page 13)

11
8. CHANGING THE JUDGMENT CONDITION
You can change “quantity of pressure
change” and “monitor time” if necessary to
set the conditions for judging if there is a
leak or no leak.
When canceling the setting halfway, press the
ON:OFF key to turn the power supply off.
(1) Changing the setting value
When “ REDY”
*(that means READY) or the
measurement result* is displayed, press and hold
the SET key (Approx. 2 seconds).
The main unit displays the setting value of the
quantity of pressure change
flashing (left side of
the display) and the monitor time (right side of the
display).
* Refer to “(1), (3)” of “7. MEASUREMENT”.
(2) Changing the quantity value of pressure change
After evacuating the air, when the pressure
changing is more than the setting value, the Leak
Tester judges a leak and “fa1l”is displayed.
The Leak Tester judges the leak by the quantity
value of pressure change of the pressure
increase.
(Unit: kPa)
Changing the minimum value is by 0.1kPa.
（
Factory setting： 0.3 kPa）
Change the value by using the D UP N or DOWN key.
* The value displayed with the “○” mark (left side of
the display) is the value in memory. But, while
changing the displayed value, the “○” mark turns
off.
Press the SET key to store the value.
( The “○” mark turns on, at the left side of the
display )
After the quantity value of pressure change stops
flashing, the monitor time value (right side of the
display) is flashing.
Time
-20kPa
Monitor time
setting value
Judgment of no leak
“ pa55 ” display
Judgment of leak
“ fa1l ” display
Setting value of quantity
of pressure change
Pressure
Evacuating
the air
Turning
on
Changing the
monitor time
Press
Store
UP DOWN
kPa
S E C
SET
kPa
Quantity of
pressure
change
When displaying “ REDY” or
the measurement result
Monitor
time
Press and
hold
kPa
S E C
SET