Protection Against Static Electricity; Use Of An Overvoltage Arrester; Impact And Friction Sparks; Potential Equalisation - Vega VEGAVIB 62 Safety Instructions

EPL Ga/Gb instrument
If VEGAVIB 61 and 63 are used as EPL Ga/Gb instruments pressures from -1 bis 16 bar according
to temperature classes T6 ... T1 are permitted also in the version with lock fitting (ARV-VB63.2*,
ARV-VB63.2B* and ARV-WE63.2*).
When the sensor of VEGAVIB 61 and 63 is operated in hazardous atmospheres of zone 0, there is
no danger of ignition if it is operated under non-atmoshperic pressures from -1 to 16 bar and tem-
peratures according to the temperature classes T6 ... T1.
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Protection against static electricity

The VEGAVIB VB6*.C****Z**** in versions with electrostatically chargeable plastic parts, such as
e.g. plastic housing, metal housing with inspection window, with plastic coated sensors or distance
tube, have a caution label pointing out the safety measures that must be taken with regard to elec-
trostatic charges during operation.
Caution: Plastic parts! Danger of electrostatic charging!
•
Avoid friction
•
No dry cleaning
•
Construction/Installation: The VEGAVIB VB6*.C****Z**** must be constructed/installed in such a
way that
– electrostatic charges are ruled out during operation, maintenance and cleaning.
– process-related electrostatic charges, e.g. by measuring media flowing past, are ruled out
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Use of an overvoltage arrester

If necessary, the VEGAVIB VB6*.C****Z**** can be connected to an overvoltage arrester, e. g. type
B62-30W from VEGA.
If the VEGAVIB VB6*.C****Z**** are used as EPL Ga/Gb instruments, overvoltage protection meas-
ures according to IEC 60079-14 are not required.
When used as EPL Ga instrument, a suitable overvoltage arrester, e. g. type B62-30W of VEGA
(IECEx TUN 07.0002) must be connected according to IEC 60079-14, for protection against surges.
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Impact and friction sparks

When used as EPL Ga instruments, the VEGAVIB VB6*.C****Z**** 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.
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Potential equalisation

If used as EPL Ga or EPL Ga/Gb instruments the VEGAVIB VB6*.C****Z**** must be electrostati-
cally connected to the local potential equalisation (transfer resistance ≤ 1 MΩ) e. g. via the ground
terminal.
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Installation

The VEGAVIB VB6*.C****Z**** have to be mounted so that the sensor is effectively secured against
bending or oscillating as well as contact of the sensor to the vessel wall, under consideration of the
vessel installations and flow conditions in the vessel.
VEGAVIB 61, 62, 63
WARNING- POTENTIAL ELECTROSTATIC
CHARGING HAZARD - SEE INSTRUCTIONS
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