1 4-wire system, 2 6-wire system, 1 general acceptance of modules – KERN & SOHN FA 6T-3M User Manual
Page 66: 2 platforms, weigh bridge platforms, 3 bin, tank, hopper and non-standard systems
Annex page 5 of 14
Certificate of EU type-approval no. DK 0199.202 rev.1
Issued by DELTA
Peripheral interface:
Set out in section 4
3.1.1
Connecting cable between the indicator and load cell / junction box for load cell(s)
3.1.1.1 4-wire system
Cable between indicator and load cell(s):
4 wires (no sense), shielded
Maximum length:
the certified length of the load cell cable, which
shall be connected directly to the indicator.
3.1.1.2 6-wire system
Only to be used for indicator model with a 7-terminal connector for load cell.
Cable between indicator and junction box:
6 wires, shielded
Maximum length:
227 m / mm²
3.2
Load receptors, load cells and load receptor supports
Removable platforms shall be equipped with level indicators.
3.2.1
General acceptance of modules
Any load cell(s) may be used for instruments under this certificate of type approval provided the fol-
lowing conditions are met:
1)
A test certificate (EN 45501) or OIML Certificate of Conformity (R60) respectively issued
for the load cell by a Notified Body responsible for type examination under the Directive
2009/23/EC.
2)
The certificate contains the load cell types and the necessary load cell data required for the
manufacturer’s declaration of compatibility of modules (WELMEC 2, Issue 5, 2009), and
any particular installation requirements). A load cell marked NH is allowed only if humidity
testing to EN 45501 has been conducted on this load cell.
3)
The compatibility of load cells and indicator is established by the manufacturer by means of
the compatibility of modules form, contained in the above WELMEC 2 document, or the
like, at the time of EC verification or declaration of EC conformity of type.
4)
The load transmission must conform to one of the examples shown in the WELMEC 2.4
Guide for load cells.
3.2.2
Platforms, weigh bridge platforms
Construction in brief
All-steel or steel-reinforced concrete construction, surface or pit
mounted
Reduction ratio
1
Junction box
Mounted in or on the platform
Load cells
Load cell according to section 3.2.1
Drawings
Various
3.2.3
Bin, tank, hopper and non-standard systems
Construction in brief
Load cell assemblies each consisting of a load cell stand assembly to
support one of the mounting feet bin, tank or hopper
Reduction ratio
1
Junction box
Mounted on dead structure
Load cell
Load cell according to section 3.2.1