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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AP
Pressure-drop limit across the filter tape. The default setting is 150 mmHg, and the range is 0-500 mmHg. See
the PRESSURE DROP EXCESSIVE error definition above.
FRl
Flow Rate Lower Limit. The default setting is 10 lpm, and the range is 0-30 lpm. See the FLOW OUT OF
LIMITS error definition above.
FRh
Flow Rate Higher Limit. The default setting is 20 lpm, and the range is 1-38 lpm. See the FLOW OUT OF
LIMITS error definition above.
6.6
PASSWORD Screen
The SETUP > PASSWORD screen allows the program administrator to change the password required to enter many of
the SETUP menus. The password prevents untrained users from accidentally changing critical settings on the unit. The
password can be any 4-key combination of the six function keys, F1 to F6. The default password is F1, F2, F3, F4.
HORIBA does not recommend changing the password unless truly necessary. Contact the HORIBA Service department
for instructions if the password is lost or forgotten.
6.7
INTERFACE Screen
The SETUP > INTERFACE screen is shown below. These settings are used to configure the APDA-371 for operation
with an external data logger recording the analog output. Most of these settings are rarely used, but the Cycle Mode
setting must be reviewed if the analog output is being used.
Interface Setup
Cycle Mode: STANDARD Force Maint: OFF
Fault Polarity: NORM Split DELTAP: 00300
Reset Polarity: NORM
SAVE EXIT
The INTERFACE screen
Force Maint:
This can be used to manually toggle the maintenance flag ON or OFF to mark the data when the unit is
being worked on, such as during a flow check. This also toggles the Maintenance relay to an external
data logger. Rarely used.
Fault Polarity: This sets the polarity of the Telemetry Fault Relay. NORM is normally open, INV is normally closed.
Rarely used.
Split DELTAP: Not used.
Reset Polarity: This tells the APDA-371 the incoming polarity of an external clock reset signal, if used. This signal is
used to synchronize the APDA clock to an external data logger. NORM is normally open, INV is
normally closed.
Cycle Mode:
The Cycle Mode can be set to STANDARD or EARLY. If you are not using the analog output voltage of
the APDA-371, leave this set to STANDARD. See Section 8.2 for a description of the Cycle Modes.
6.8
SENSOR Screen
The SETUP > SENSOR menu is where configurations and setup parameters are located for the six analog input
channels used to log external meteorological sensors. Each channel must be configured to accept the sensor before
data can be acquired. Description for the parameters are provided below. There is a separate configurable setup screen
for each of the six external sensor inputs in the SETUP > SENSOR menu. There are also two internal channels (I1
concentration and I2 flow volume) which can be viewed but not modified.
