Detector Grounding - Prosense Safevader Series User Manual

Detector grounding

Internal Ground connection: Each detector has grounding screw which utilizes grounding for
detector main PCB to detector body. The screw should be located correctly and fixed for all
times. In case of any maintenance activity this screw should be checked and fixed to make sure
for proper grounding.
Grounding screw location
Internal grounding screw location should be reserved for grounding cable and not used for any
other purpose.
Minimum internal earth size must at least equal the incoming conductor size (i.e
1.5mm 2 live/neutral = minimum of 1.5mm
Cable and Earth/Ground regimes
Effective Earth/Ground bonding is important to ensure good EMC and RFI immunity. The
following diagram show example of how to earth/ground bond the cable at enclosures. The
same principles apply to conduit installations. These bonding techniques provide good RFI/EMC
performance. Earth/ground loops must be avoided to prevent the risk of false signal variation.
The Earth Screen of the field cable should be "tied to Earth" or connected to Ground at one
point only. It is common practise to adopt a STAR EARTH connection regime where all
instrumentation Screens are connected at one common point. The Screen at the other end of
the cable should be "parked" or terminated into a blank terminal.
PRS-UM-SV-EN-Rev1.0-16.12.2022
Diagram 5: Detector internal grounding screw location
Diagram 6: Grounding
2 earth too).
Page 13 / 41