Connection - Siemens QGO21 Series Basic Documentation


Building Technologies Division

7.2 Connection

Figure 8 shows the connection of the QGO21 to the PLL52
Note
The signal lines require shielded 6-core cables with twisted pairs.
The shielding is to be connected to terminal GND of the PLL52.

Open the cover only when the main switch is off so that both live and neutral
conductors are disconnected

There is a risk of burning since the measuring cell works at an operating
temperature of 700 °C
Figure 8: Connection QGO21
Oxygen Sensor QGO21...
7 Mounting and connecting the sensor
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CC1P7845en
06.12.2017