Flintec ATEX - Manual (Page 5)

Instruction and Operation Manual
for ATEX Approved Load Cells
Last revision: 24.10.2014 Revision: 9.5 Page 5 / 12 Date of 1st issue: 03.06.2002
2.7 Special notes to the relative inductance and capacities of cables within intrinsically
safe circuits
Up to a cable length of 10 meters, the inductance and capacitance of the load cell cables are negligible.
The cable lenght is shown as ZZ within the type code. In case the load cell cable lenght exceeds 10 meter,
the inductance and capacitance have to be considered.
Following default values can be used (according article 12.2.2.2 of EN 60079-14) :

C
L
= 200 pF m
-1

L
L
= 1 µH m
-1
3. Designation
All Flintec load cells follow the same electrical design and meet the requirements for category1 equipment.
The operating company must ensure that already used load cells must not used in other zones except in
the same category. Therefore the label has a corresponding checkbox
The ATEX-label is attached to the connection cable close to the load cell body. All allowed designations for
this load cell are prepared.
The operating company or the specialist who installs the equipment must fill in
a checkbox with the valid zone by use of a permanent waterproof marker pen or hole punch at site.
Without any entry on the label, the load cell is limited for use in zone 2 or 22!
3.1 Standard Label 3.2 Categorie - Designation