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8 Installation
8.3.7
Connecting the device to earth
In this chapter you will receive information on connecting the device to earth and
the protection of the device.
126
The PA connection must be at least 4.0 mm
Danger
Mortal danger from incorrect earthing
When the device is not correctly connected to earth so that electrostatic
discharge can lead to spark formation, there is a risk of an explosion.
•
Connect the device to earth as described in the instructions.
For ultrasonic gas meters DN150 (6") and DN100 (4")
Fig. 8.36: Connect to earth – Ultrasonic meters DN150 (6") and DN100 (4")
1
Fasten the customers earthing to the earthing screw (1).
Manual USM GT400 · EN10 · May 2021
2
1
Earthing srew M6
2
Earthing srew M6
3
Earthing cable
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