![background image](http://html1.mh-extra.com/html/horiba/apda-371/apda-371_operation-manual_2162288019.webp)
Operation Manual HORIBA APDA-371
Particulate Monitor
Date:
April, 2010
______________________________________________________________________________________________________________________
______________________________________________________________________________________________________________________
HORIBA Europe GmbH, Julius-Kronenberg-Str. 9, D-42799 Leichlingen, Telefon: +49(0)2175-8978-0, Fax: +49(0)2175-8978-50
Page 19
The APDA-371 User Interface
Soft Keys:
Directly beneath the display are four white buttons called “soft-keys” or “hot-keys”. These are dynamic keys who’s
function changes in response to a menu option displayed directly above each key on the bottom row of the display.
Whatever menu option is displayed above one of these keys is the function which that key will perform in that particular
menu. These are used throughout the entire menu system for a wide variety of functions. For example, modifications
made within a menu are usually not saved unless a SAVE soft-key is pressed. EXIT is also another common soft-key
function.
Arrow (Cursor) Keys:
The four red arrow keys are used to scroll up, down, left, and right to navigate in the menu system, and to select items
or change fields on the screen. The arrow keys are also often used to change parameters or increment/decrement
values in the menu system.
Contrast Key:
The key with a circular symbol on it is for adjusting the light/dark contrast on the LCD display. Press and hold the key
until the desired contrast is achieved. It is possible to overadjust the contrast and make the entire display completely
blank or completely dark, so be careful to set it to a visible level or it may appear that the unit is not operating.
Function Keys F1 to F6:
The function keys serve as shortcuts to commonly used menu screens, and can be safely pressed at almost any time
without interrupting the sample cycle. The F keys are only functional from the main menu screen or for entering
passwords. The factory default password is F1, F2, F3, F4.
F1
Current: This key is a shortcut to the OPERATE > INST screen, used to display the instantaneous data values
that are being measured by the APDA-371. See section 3.12. The F1 key can be used without interrupting a sample
cycle.
F2
Average: This key is a shortcut to the OPERATE > AVERAGE screen, used to display the latest average of the
data recorded by the APDA-371. See Section 3.13. The F2 key can be used without interrupting a sample cycle.
F3
Error Recall: This key allows the user to view the errors logged by the APDA-371. The errors are sorted by
date. The last 12 days which contain error records are available, and up to the last 100 errors can be viewed. The F3
key can be used without interrupting a sample cycle.
F4
Data Recall:
This key allows the user to view the data stored in the APDA-371, including concentrations,
flow, and all six external channels. The data is sorted by date, and the user can scroll through the data hour-by-hour
using the soft-keys. Only the last 12 days which contain data records are available in this menu. The F4 key can be
used without interrupting a sample cycle.
F5
Transfer Module: This key is used to copy the memory contents to an optional transfer storage module to
retrieve the digital data without a computer. This function is rarely used. HORIBA recommends downloading the data
with a laptop, computer or modem connection.
F6
(Blank): This key is not assigned a data function.
3.4
Filter Tape Loading
A roll of filter tape must be loaded into the APDA-371 for sampling. One roll of tape should last more than 60 days
under normal operation. It is important to have several spare rolls of tape available to avoid data interruptions. HORIBA
recommends wearing lint-free cotton gloves when handling the tape. Some agencies save the used rolls of tape for