Operation Manual HORIBA APDA-371
Particulate Monitor
Date:
April, 2010
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HORIBA Europe GmbH, Julius-Kronenberg-Str. 9, D-42799 Leichlingen, Telefon: +49(0)2175-8978-0, Fax: +49(0)2175-8978-50
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operator suspects a problem with the unit. More detailed diagnostic menus are also available in the APDA, and those
are described in the troubleshooting section.
The self-test feature is located in the TAPE menu. Press the SELF TEST soft-key to start the test. The tests will take a
couple of minutes, and the APDA-371 will display the results of each tested item with an OK or a FAIL tag. If all of the
test items are OK, the status will show SELF TEST PASSED as shown in the drawing below. If any item fails, the status
will show ERROR OCCURRED.
02/08/1999
15:29:30
LATCH: OFF
TAPE BREAK: OK
CAPSTAN: OK
TAPE TENSION: OK
NOZZLE DN: OK
SHUTTLE: OK
NOZZLE UP: OK
REF EXTEND: OK
FLOW: OK
REF WITHDRAW: OK
Status:
SELF TEST PASSED
TENSION
SELF TEST
EXIT
Self-Test Status Screen
LATCH:
This will show OFF if the photo interrupter senses that the pinch rollers are unlatched as in normal
operation. It will show ON if the roller assembly is latched in the up position. The tape cannot move if the rollers are up!
CAPSTAN:
The unit will rotate the capstan shaft forward and backwards and will check if the photo interrupter sees
the shaft rotating. The Capstan shaft is what moves the filter tape back and forth.
NOZZLE DN: The unit will attempt to lower the nozzle, and will check if the nozzle motor has moved to the down
position with a photo interrupter. It is possible for the nozzle to become stuck in the UP position, even if the nozzle
motor has successfully moved to the DOWN position. For this reason, proper inlet alignment and maintenance is
necessary.
NOZZLE UP: The unit will attempt to raise the nozzle, and will check if the nozzle motor has moved to the up position
with a photo interrupter.
FLOW: The unit will attempt to turn the pump on, and will then look for output on the flow sensor. This test takes about
a minute and will fail if the pump is not connected.
TAPE BREAK: The unit will move the supply and take-up motors to create slack in the filter tape, and look for proper
operation of the tensioner photo interrupters.
TAPE TENSION:
The unit will tension the filter tape, and then check the condition of the tensioner photo
interrupters.
SHUTTLE:
The unit will attempt to move the shuttle beam left and right, and will check the motion with a photo
interrupter.
REF EXTEND: The unit will attempt to extend the reference membrane, and will check the motion with a photo
interrupter.
REF WITHDRAW:
The unit will attempt to withdraw the reference membrane, and will check the motion with a
photo interrupter.
3.6
Initial SETUP Settings Considerations
The APDA-371 comes pre-programmed with a wide array of default values for the settings which govern the
measurement and calibration. Many of these values will not be changed, as the default values are accurate for the
majority of applications. You will need to review the Setup Menus in Section 6 of this manual and decide if any values
need to be changed. At the very least, review the following parameters:
1.
Set the system clock in the SETUP > CLOCK menu. The APDA-371 clock may drift as much as a couple of
minutes per month. It is important to check the clock at least once per month to ensure the samples are performed at
the correct times.
2.
Review the APDA SAMPLE, COUNT TIME, MET SAMPLE, RANGE, and OFFSET values in the SETUP >
SAMPLE menu.
3.
Review the FLOW RATE, FLOW TYPE, CONC TYPE, and HEATER CONTROL settings in the SETUP >
CALIBRATE menu.
4.
Review the scaling of any external sensors in the SETUP > SENSORS menu.
5.
Review the Smart Heater control settings in the SETUP > HEATER menu.