GASLAB Q2 AFTER DELIVERY AND AT THE PLACE OF USE
Information for general use
Rev. M / 73023639
73
GasLab Q2
5.4.7.
Connection to other devices and system parts
The connection diagrams for sensors and devices to which the GasLab Q2 can be connected are
shown in example form in the following. This may require special parameterization in enSuite.
Detailed information on parameterization is available in
8 Configuration and analysis software enSuite
Only the minimally required settings are shown below in keywords.
The explosion protection, general industrial and local regulations, for example, EN 60079-0 and EN
60079-14, apply to the wiring, screening and grounding.
Screening the cable creates a space which is not affected by external fields. The cable screens can
best be described as an extension of the housing. We recommend that the screen be applied over
as wide an area as possible with multiple contact points in order to discharge any interference that
may occur.
The following options for attaching the screen to the connection cable are possible as long as
they do not breach explosion protection regulations
1.
Two-sided attachment
(It is extremely important and mandatory that there are no
grounding potential differences between the end points of the shield.)
Benefit
EMC-compliant connection is also effective against inductive coupling
components
Drawback
Compensating currents (ground loop formation), which flow through the
screens should be prevented where possible and require appropriate action.
2.
One-sided attachment
Benefit
Lower voltage with potential isolation in conjunction with low frequency
signals No compensating currents and ground loop formation
Drawback
Is only effective against capacitive couplings and only produces significant
success if the screened circuit has no connection to the ground, at least on
the cable side.
In order to comply with the specified explosion protection level, the cable connection in
the gland must always obey the gland manufacturer’s specifications.
The isolation or surge (lightning) protection on the cables must be installed by the user,
depending on the situation of use.
Afin de respecter la protection contre les explosions indiquée, le montage des câbles dans
les presse-étoupes doit dans tous les cas être effectué conformément aux instructions du
fabricant desdits presse-étoupes!
L'isolation ou la protection contre les surtensions (foudre) des câbles doit être installée
par l'utilisateur, en fonction de la situation d'utilisation.