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IECEx Certificate
of Conformity

IEC Certification Scheme for Explosive Atmospheres
for rules and details of the IECEx Scheme visit

Certificate No.:
IECEx PTB 13.0008 issue No.: 0

Certificate history:

Date of Issue:2013-03-11Page 1 of 3
VELOMAT Messelektronik GmbH
Schwarzer Weg 23b
01917 Kamenz
Equipment:Load cell type series SKL-XXD-Y-Z_ATEX
Optional accessory:
Type of Protection:General Requirements, Intrinsic Safety


Ex ia IIB T4
Ex ia IIIB T120°C

Approved for issue on behalf of the IECEx
Certification Body:
Dr.-Ing. Ulrich Johannsmeyer

Position:Department Head "Intrinsic Safety and Safety of Systems"

(for printed version)
1. This certificate and schedule may only be reproduced in full.
2. This certificate is not transferable and remains the property of the issuing body.
3. The Status and authenticity of this certificate may be verified by visiting the Official IECEx Website.

  Certificate issued by:
Physikalisch-Technische Bundesanstalt (PTB)
Bundesallee 100
38116 Braunschweig


IECEx Certificate
of Conformity

Certificate No.:IECEx PTB 13.0008
Date of Issue:2013-03-11Issue No.: 0
Page 2 of 3
VELOMAT Messelektronik GmbH
Schwarzer Weg 23b
01917 Kamenz

Additional Manufacturing location(s):


This certificate is issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with the IEC Standard list below and that the manufacturer's quality system, relating to the Ex products covered by this certificate, was assessed and found to comply with the IECEx Quality system requirements. This certificate is granted subject to the conditions as set out in IECEx Scheme Rules, IECEx 02 and Operational Documents as amended.

The apparatus and any acceptable variations to it specified in the schedule of this certificate and the identified documents, was found to comply with the following standards:

IEC 60079-0 : 2007-10
Edition: 5
Explosive atmospheres - Part 0:Equipment - General requirements
IEC 60079-11 : 2011
Edition: 6.0
Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
This Certificate does not indicate compliance with electrical safety and performance requirements other than those expressly included in the Standards listed above.

TEST & ASSESSMENT REPORTS:A sample(s) of the equipment listed has successfully met the examination and test requirements as recorded in

Test Report:


Quality Assessment Report:



IECEx Certificate
of Conformity

Certificate No.:IECEx PTB 13.0008
Date of Issue:2013-03-11Issue No.: 0
Page 3 of 3
Equipment and systems covered by this certificate are as follows

The load cell type series SKL-XXD-Y Z_ATEX work on the principle of transverse shear force measurement to the longitudinal axis and are operated on hydraulic cylinders of working platforms, cranes and conveyor systems in hazardous areas. The load cell can be configured with either one or two measurement channels 

The maximum permissible ambient temperature range is shown in the following table:

 ambient temperature range marking
 -20°C up to +60°C Ex ia IIB T4
 -30°C up to +80°C used as Ex ia IIB  T4  Gb-equipment
 -30°C up to +80°C Ex ia IIIB T120°C

For applications requiring EPL-Ga equipment, the media process pressure has to be between 0.8 bar and 1.1 bar.
If there is a deviation from the above mentioned conditions it should be noted that the load cell has a temperature rise of max. 29 K and the safe operation of the installation in terms of pressure / temperatures of the used materials shall be guaranteed by the user. Here, the characteristics specified by the manufacturer shall be observed


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