Measurement - AND AD-1690 Instruction Manual

Leak tester
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7. MEASUREMENT

(1) Power supply
Press the ON:OFF key (The display is
"display all"). After displaying the setting value
(quantity of pressure change and monitor time
for leak judgment), the display is "
means READY) and is in the measurement
standby mode.
(2) Starting measurement
Connect the test pipette to the tip of the
attachment securely.
Press START key. The main unit starts the
measurement by operating the pump,
evacuating the air to -20 kPa. ("
When -20 kPa is reached, the pump stops.
* -20 kPa is approximately 0.2 atmospheres that
means that the air has been partially evacuated.
* While stabilizing the inside pressure, the display
may change by 0.1 to 0.2 kPa.
The main unit measures the quantity of the
pressure changed by the monitor time set.
("
"display)
* Factory setting: monitor time is 3 seconds,
quantity of pressure changed is +0.3 kPa.
(3) Measurement result
When the quantity of pressure change with leakage is in less than the setting value,
the Leak Tester judges that there is no leak and displays "
When the pressure, with any leakage does not reach -20 kPa or when the quantity of
pressure change is over the setting value after reaching -20 kPa, the Leak Tester
judges that there is a leak and displays "
" (that
" display)
" (abnormality).
11
ON:OFF
All displayed
kPa
REDY
START
Measurement starts
TEST
Measurement result
" (normal).
Monitor
time
S E C
Pipette
Tip
kPa

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