Heinrichs Messtechnik GmbH
Page 26
Betriebsanleitung KDS/BGK
16.4
Mechanical stability
The flow meters have undergone an impact test to DIN EN ISO 80079-36.for a low level of mechanical hazard.
Additional protective measures are required if there is a higher mechanical hazard level.
16.5
Without electrical equipment
The basic version of the flow meter is a non-electrical device without its own ignition source and meets
DIN EN ISO 80079-36 requirements. It can be used in hazardous areas that require Category 2 equipment.
Markings
II 2G Ex h IIC TX Gb
II 2D Ex h IIIC TX°C Db
Reg. No.: BVS 03 ATEX H-B 113
Tech. File Reg. No.: 03-01 X
Since the device does not have its own power sources that would result in a temperature increase, the fluid
temperature is decisive for the maximum surface temperature.
When used in potentially explosive dust atmospheres, the device must be cleaned regularly to avoid deposits
exceeding 5 mm.
16.6
With integrated electrical sensors
When the electrical sensors are installed, the device becomes an electrical assembly and receives the additional
markings off the built in sensors in accordance with DIN EN 60079ff.
The electrical and thermal data, depending on the fluid temperature and ambient temperature, and the specific
conditions of the EC-Type Examination Certificate of the built-in sensor must to be considered.
See the example below.
16.6.1
With limit transducer
When the limit transducer is installed, the device becomes an electrical assembly. The installed limit transducer
of the company Pepperl & Fuchs is certified for the use in a explosive gas environment and for the use in a
explosive dust environment by PTB 00 ATEX 2048 X EU Type Examination Certificate. The electrical and thermal
data and the special conditions of these EU Type Examination Certificates must be observed.
Marking on the cable of
the limit transducer:
PTB 00 ATEX 2048 X
II 2G Ex ia IIC T6-T1 Gb
PTB 00 ATEX 2048 X
II 2D Ex ib IIIC T135°C Db
