YSI IQ SensorNet 2020 XT Terminal - Manual (Page 151)

System 2020 XT USB Settings/setup
5 - 31 ba76019e01 12/2012
Alarm links setting table
Menu item Selection/Values Explanations
Measured variable  Main variable
 Adjoining variable Main variable designates the actual
measured parameter of the sensor (e.g.
pH, oxygen, etc.).
Adjoining variable designates an
additional measured parameter (e.g.
temperature).
Limit value  Lower limit
 Upper limit Type of the alarm event.
Lower limit: An alarm is triggered if the
defined limit value is undercut.
Upper limit: An alarm is triggered if the
defined limit value is exceeded.
Lower limit /
Upper limit
within the measuring
range (sensor-
dependent) Limit value for the alarm event
Hysteresis 0 - 10 % of the
measuring range Hysteresis for the limit value
Designation (max. 20 characters) User-defined designation for easier
identification in the alarm message
(display and SMS).
Relay output Dxx / .../Ry
...
...
...
No relay output
Opens a list with all relay outputs where
the Alarm contact is set.
Dxx: number of the output module
.../Ry: relay output channel
Here you can select a relay output. When
the alarm event occurs, it carries out the
specified action (Open or Close). Details
see section 5.10.3 A
LARM OUTPUT TO
DISPLAY .
Accept The settings are taken over in the setting
table by pressing . The display
switches to the next higher level.
Cancel The display switches to the next higher
level without storing the new settings.