
Page | 4
Aeroqual Series 900 User Guide
2.2. Configuring the S930 using the PC software
a. Plug in and install the USB to RS485 converter into your
computer
b. Wire the RS485 outputs into the instrument using table
above
c. Install the Aeroqual Fixed Monitor Configuration PC
software
d. Power up the instrument
e. Run the Fixed Monitor Configuration software
f.
Select Unit by entering the Port ID of the instrument you
wish to
modify and click on "Download” to download the
unit’s current values
Note: All new products have a default ID of 1
g. Modify settings
h. Click Upload to upload the settings to the instrument
i.
Click Exit
2.2.1. Changing the Port ID
Click on “Port” menu and select “Change Port ID” to change ID
to your requirement in the range 1 to 255.
Note: If you are setting up a network please ensure each unit has a
unique ID otherwise there will be conflicts and data loss.
2.2.2. Alarms
High alarm and low alarm set points can be configured by entering the
required activation set point on the main menu.
Note: The
high alarm set point must be greater than low alarm set point
The low alarm trigger determines whether low alarm is activated when the concentration goes above
or below the set point. The Alarms can be enabled or disabled by clicking “Enable” or “Disable” on the
main menu.
2.2.3. Control
The control output is triggered according to the band set by the control high and control low values.
Note: Control high must be greater than control low
The action of this output is designed to enable control of an external device such as an ozone
generator. The control output will be "on" when the concentration is rising in the range from below
control low until it hits control high when it turns off. It remains off until the concentration falls below
control low.