Glossary - Hach AquaTrend 51200 Instrument Manual

Glossary

AquaTrend Network System - A system which provides a digital interface
link between sensors and communication devices and can receive data from
these devices at a maximum distance of up to 500 meters (1640 feet.). The
fieldbus communications that makes such configuration possible is provided
by Echelon ® LonWorks ® technology.
The network software may configure up to 35 devices including: one
Master AquaTrend, as many as two Serial I/O Modules, and up to eight
sensors, eight Signal Output Modules, eight Digital Display Modules, and
eight Remote AquaTrends.
channel - Where data is displayed and logged on the AquaTrend. The
AquaTrend has eight channels (represented by the letters A through H) to
which you can attach measurements from sensors.
configure - Setting up a Hach network device for operation after hardware
installation is complete. This involves selecting various software options and
establishing communications between devices.
device - Any of the Hach network instruments, including sensors,
communications modules, display modules, outputs, and AquaTrends.
Digital Display Module (DDM) - An eight-character display that can be used
with sensors or analyzers to display a single measurement. It can be mounted
as far away as 400 meters (1310 feet) from the sensor.
Echelon technology - communications technology used by the AquaTrend
®
Network System and developed by Echelon Corporation, producers of
LonWorks fieldbus technology.
®
fieldbus - Any of several techniques allowing multiple devices to be
connected on a single set of wires.
LonWorks - The fieldbus protocol used by the AquaTrend Network System.
Master AquaTrend - Acts as the main network data control center for setup
and operation of the network. The network can contain as many as nine
AquaTrends but only one can be the Master AquaTrend. Only through the
Master AquaTrend can you perform network operations.
network - The connection of one or more devices (of which at least one is a
sensor or analyzer) to a Master AquaTrend.
pop-up box - Refers to a selection or message box at the end of a menu
chain. This box either provides a choice of options, selectable by moving the
cursor and pressing ENTER, or allows you to use the arrow keys to enter an
alphanumeric response, or it states the status of the current operation. These
three possibilities are respectively shown below.
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Glossary
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