KERN & SOHN IEX 100K-1MEU User Manual

KERN & Sohn GmbH

Ziegelei 1
D-72336 Balingen
E-Mail: [e-mail]

Phone: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com

Safety-usage manual

KERN IEX

Version 1.0

06/2014
GB

IEX-BA-e-1410

GB

KERN IEX

Version 1.0 06/2014

Operating- manual
Platform balance

Contents

1 General understanding of the manual symbology .......................................... 3

2 Intended use of scales IEX ................................................................................ 3

3 Construction of single load cell scales IEX ..................................................... 4

4 Warnings and security information .................................................................. 5

5 Installation instruction of scale ......................................................................... 7

6 Changing the scale place of operation ........................................................... 10

7 Cleaning and maintenance .............................................................................. 10

8 Technical surveys ............................................................................................ 11

2 IEX-BA-e-1410

 marking of passages that are crucial for anti-explosive safety.

 Scales of IEX serie, because of the construction of the non-electrical

part of the platform and used material, can be used in zones 1 or 2
endangered for appearance of gases, mixture of gases, mists form
IIA or IIB explosive groups and T1, T2, T3 or T4.temperature class.

1 General understanding of the manual symbology

Observing prescriptions of this manual is a crucial precaution concerning safe
operation in explosive atmospheres as far as IEX scales are concerned.

All users and the personnel responsible for maintenance should be familiar
with this manual and manuals describing functional parts of this device:

 Indicator KEX-TM
 Power adaptor IEX-A01-U, IEX-A01-E

The mentioned manual should be accessible all the time for people who are
involved in working or maintenance of the device.

You can find following symbology in this manual:

 Activities always required
 Activities required only under certain circumstances,

„Safety usage manual” can be complement with additional warnings and security

information provided by KERN.
The whole personnel should be informed about any released appendix to this
manual.

2 Intended use of scales IEX

IEX scales are intended to mass measurements in hazardous areas endangered to
appearance of explosive atmosphere. They can be used for weighings goods.
Tarring within the whole range of measurement allows to measure net mass of loads.
Scale construction is compatible with Directive 94/9/EC valid for the countries of
European Union.

IEX-BA-e-1410 3

IEX (300x300 platform)

3 Construction of single load cell scales IEX

Single load cell scales series IEX feature modular construction comprising:

 Indicator KEX-TM
 Power adapter IEX-A01 manufactured by KERN, located outside the explosive

zone

 Load cell in Ex version
 Weighing platform - non-electric scale’s mechanical component.

Indicator series KEX-TM is plugged with a cable to a force measuring sensor (a load
cell) installed in a stainless steel weighing platform. The weighing platform features a
surface plate also made of stainless steel ensuring adequate protection and
providing easy cleaning. Scales series IEX feature a aluminum load cell ensuring
upgraded robustness against harmful influence of the surrounding conditions.
The cable connecting the load cell and the indicator is protected by a pillar or a a ~ 3
meter flexible tube.
The indicator is powered from KERN power adapter IEX-A01, which is located
outside the explosive area. The power adapter is plugged to mains 230V.

The indicator’s housing features a marked grounding clamp for connecting grounding

conductor (static electricity discharge). The housing is electrically connected with the
weighing platform using a steel flexible tube.

Scales series IEX comprising an indicator KEX-TM

4 IEX-BA-e-1410