- 38 -
z
A numerical value of several L/min may be indicated even if the blower is not running.
Because this sampler utilizes a differential pressure detection system, if there is even a
tiny airflow at the flow rate detector, it will register as flow rate. Note that this does not
indicate a malfunction.
Leak Check
Press LEAK CHECK to switch to leak check mode.
Press ESC to return to the calibration screen.
For the leak check, prepare an HV rectangular rubber plate (sold separately). Attach it to the
filter case using the same procedures as for attaching filters, and seal off the sampler's
suction port.
Next, press the
[START/STOP]
button, and run the blower for 1 minute.
At this point, measure the flow rate.
If the flow rate exceeds 5 L/min, there is likely a leak somewhere in the sampling line. Check
the attachment of the clamps, packing, and other connecting parts.
Rubber plate for leak checks
(HV rectangular shape)