The housing must be electrically connected to the local earth and the equipotential
bonding. For this purpose, the equipotential bonding connection point (PA) marked
GROUND on the bottom of the housing next to the calibration gas inlet must be used.
Le boîtier doit être relié électriquement à la terre locale et à la liaison équipotentielle. À
cette fin, il faut utiliser le point de connexion de la liaison équipotentielle (PA) marqué
GROUND sur le fond du boîtier, à côté de l'entrée du gaz d'étalonnage.
The conductor cross-section for grounding is least 6 mm² ≙ 10 AWG (maximum 10 mm² ≙ 8 AWG)
copper conductor. The specified ground connection must be used with no modifications. The torque
for the connection must not exceed 3.5Nm ≙ 2.582 ftlb.
If GasLab Q2 is mounted on a metal plate, the plate must be properly included in the grounding and
the equipotential bonding system. Use the appropriate connections or install such connections.
There is another functional earth point (FE) in the connection box, see Figure 5.4.
The device will only operate correctly if all the system parts have the same grounding potential.
Before making any further cable connections, ensure that this is permanently guaranteed.
If potential differences are found, they must be rectified by the system operator by taking
appropriate measures, giving due consideration to explosion protection (see section 2.1 Intended
use and Responsibilities).
The screens on the supply and communication cables must be connected in compliance with
explosion-protection regulations (for example, EN 60079-0; EN 60079-14) and local regulations.
Figure 5.4: Grounding inside connection box (FE) and outside of the device (PA)
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