YSI IQ SensorNet 2020 XT Terminal - Manual (Page 135)

System 2020 XT USB Settings/setup
5 - 15 ba76019e01 12/2012
5.6 Setting up IQ sensors/differential sensors
5.6.1 Creating a differential sensor
A differential sensor is a virtual sensor. It shows the differential value of
two IQ sensors that measure the same parameter and have the same
settings. This is used to display the difference, e.g. before and after a
water treatment.
Differential IQ sensors can be recognized in the Edit list of sensors
overview in the Ser. no. field by the specification of the two sensors
involved. A link with another IQ sensor in the Settings of sensors and
diff. sensors menu can be recognized in the & field by the sensor
number of the linked sensor.
Fig. 5-8 Settings of sensors and diff. sensors -> Link with...
1 Using <S>, open the Settings menu.
2 Using <
> and <OK>, select and confirm the menu
item, System settings -> Settings of sensors and diff. sensors.
The Settings of sensors and diff. sensors display opens.
3 Using < >, select a sensor and confirm with <OK>.
The display for the selection of the second sensor opens.
4 Using <
>, select a sensor and confirm with <OK>.
The sensors are linked.
The link in both sensors is entered in the Edit list of sensors
overview. The linked sensor is created as a new sensor and
also appears in the measured value display.