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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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apart) to the inlet tube with a supplied hose clamp. The bottom ends of the struts should be fastened to the roof with lag
bolts (not supplied). Note: Some installations may require different methods or hardware for supporting the inlet tube.
Support the tube in the best manner available.
8.
Temperature Sensor: Most APDA-371 units are supplied with a BX-592 (temperature) or BX-596 (temperature
and pressure) sensor, which is attached to the inlet tube above the roof. The sensor cable must feed into the shelter to
be attached to the APDA. In some cases it is easiest to simply drill a 3/8” hole through the roof about six inches away
from the inlet tube, then feed the cable through the hole and caulk around it to prevent leaks. In some applications there
may be a better place to feed the cable into the shelter. Route the cable into the shelter in the best manner. The BX-596
attaches directly to the inlet tube with a supplied U-bolt. If using a BX-592, fasten the aluminum cross-arm to the inlet
tube, and clip the temperature probe to the cross-arm.
9.
Inlet Separator Heads: If the APDA-371 is to be configured for FEM PM
2.5
monitoring, then install the PM
2.5
Very Sharp Cut Cyclone (BGI VSCC™) onto the top of the inlet tube beneath the BX-802 PM
10
head. For PM
10
monitoring, the BX-802 is installed on the inlet tube with no cyclone. Use o-ring lubricant as needed.
10.
Inlet Tube Grounding: Tighten the two ¼”-20 set screws located in the inlet receiver of the APDA to secure
the inlet tube. This also creates a ground connection for the inlet tube, as static electricity can build up on the inlet under
certain atmospheric conditions and cause errors. This is very important in areas near electromagnetic fields, high
voltage power lines, or RF antennas. Check the connection by scraping away a small spot of the clear anodizing near
the bottom of the inlet tube, and use a multimeter to measure the resistance between this spot and the “CHASSIS”
ground connection on the back of the APDA. It should measure just a couple of Ohms or less if a good connection is
made with the set screws. If not, remove the set screws and run a ¼-20 tap through the holes. Then reinstall the screws
and check the electrical resistance again. Note: Anodized aluminum surfaces are non-conductive.