4
SPECIAL CONDITIONS
24
OPTIBAR 5060
www.krohne.com
04/2021 - 4003591803 - AD OPTIBAR 5060 Exia R03 en
4.1 Protection against static electricity
The OPTIBAR * 5060 VGK5/6/D*A/W/V C/U/0/H/T in versions with electrostatically chargeable
plastic parts, such as e.g. plastic housing, metal housing with sight window, with plastic-coated
sensor unit, suspension cable or suspension hose, distance tube or connection cable with the
remote version, a caution label points out the safety measures that must be taken with regard to
electrostatic charges during operation.
Caution: Plastic part! Risk of electrostatic charge!
•
Avoid friction
•
No dry cleaning
•
Do not mount in areas with flowing, non-conductive products
4.2 Use of an overvoltage arrester
If necessary, a suitable overvoltage arrester can be connected in front of the OPTIBAR * 5060
VGK5/6/D*A/W/V C/U/0/H/T. When used as equipment category 1G or 1/2G, as far as necessary
analogue, a suitable overvoltage arrester must be connected in front as protection against
voltage surges according to EN 60079-14 or IEC 60079-14 section 12.3.
4.3 Grounding
To avoid the danger of electrostatic charging of the metallic parts, the OPTIBAR * 5060
VGK5/6/D*A/W/V C/U/0/H/T, used as category 1G or 1/2G equipment, must be electrostatically
connected to the local equipotential bonding (transfer resistance
1 M
), e. g. via the ground
terminal.
4.4 Impact and friction sparks
When used as category 1G or 1/2G equipment, the OPTIBAR * 5060 VGK5/6/D*A/W/V C/U/0/H/T
in aluminium/titanium versions must be mounted in such a way that sparks from impact and
friction between aluminium/titanium and steel (except stainless steel, if the presence of rust
particles can be excluded) cannot occur.
4.5 Material resistance
For applications requiring equipment category 1G or 1/2G, the OPTIBAR * 5060 VGK5/6/D*A/W/V
C/U/0/H/T must only be used in products against which the wetted materials are sufficiently
resistant.
Figure 4-1: Warning sign
WARNING- POTENTIAL ELECTROSTATIC
CHARGING HAZARD - SEE INSTRUCTION
