Flintec ATEX - Manual (Page 2)

Instruction and Operation Manual
for ATEX Approved Load Cells
Last revision: 24.10.2014 Revision: 9.5 Page 2 / 12 Date of 1st issue: 03.06.2002
0. Valid for Load Cells
BK2, PC1, PC2, PC2H, PC6, PC12, PC22, PC42, PC46, PC60, PCB, SB2, SB4, SB5, SB6, SB8, SB14,
SLB, ZLB, RC1, RC2, RC3, UB1, UB5, UB6, ULB
1 . Preamble
This manual covers only the “Ex” relevant aspects.
2 . Equipment Function
Flintec load cells are designed to be used in various kinds of industrial scales and meet the most stringent
accuracy requirements. Certifications have been obtained from Weights & Measures Authorities worldwide.
These load cells are available with different maximum capacities and include accuracy classifications
according to OIML R 60 and / or NTEP.
They offer stainless steel or aluminium construction sealed by welding or improved potting.
This makes them suitable for use in tough industrial environments
– they are designed to withstand shock
and fatigue loading.
The load cells can be used in all hazardous areas. The basic structure is always the same.
All standard equipment is provided with a 4-wire shielded conductor cable; equipment with the coding
extension
–6w is provided with a 6-wire shielded conductor cable.
(See Chapter 2.5 Coding of Load Cells)
2.1 Details
The following table shows the relationship between maximum total power P
i
and maximum ambient
temperature.
Temperature class / coding U
i
= 30 V, P
i
= 4 W
T6 (gas) -40°C ≤ Ta ≤ 45°C
T5 (gas) -40°C ≤ Ta ≤ 60°C
T100°C (dust) -40°C ≤ Ta ≤ 60°C
2.2 Connection of the Standard Version
Supply circuit: green (+) and black (-)
Signal circuit: white (+) and red (-)
Shield yellow and / or metallic
The intrinsically safe circuit including the load cells must be built up with approved safety barriers
or switch amplifiers, matching the connected weighing indicator.