Krohne DK32 and DH34 Variable Area Flow Meters ... - Instrumart
Krohne DK32 and DH34 Variable Area Flow Meters ... - Instrumart
Krohne DK32 and DH34 Variable Area Flow Meters ... - Instrumart
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<strong>DK32</strong> - DK34 - DK37<br />
ELECTRICAL CONNECTIONS 4<br />
4.7 Protection category<br />
The variable area flowmeters <strong>DK32</strong> / DK34 / DK37 have been tested for ingress protection<br />
according to EN 60529. The following grades of protection are confirmed:<br />
Ingress Protection<br />
EN 60529<br />
Mechanical version<br />
without cable gl<strong>and</strong>s<br />
Electrical version<br />
with cable gl<strong>and</strong>s<br />
<strong>DK32</strong> / DK34 IP66 / IP68 IP65<br />
DK37 IP66 IP66<br />
DANGER!<br />
After all servicing <strong>and</strong> maintenance work on the flowmeter, the specified protection category has<br />
to be ensured again.<br />
Therefore it is essential to observe the following points:<br />
• Use only original gaskets. They must be clean <strong>and</strong> free of any damage. Defective gaskets have<br />
to be replaced.<br />
• The electrical cables used must be undamaged <strong>and</strong> must comply with regulations.<br />
• The cable has to be laid with a loop 3 upstream of the flowmeter to prevent water from<br />
getting into the housing.<br />
• The cable gl<strong>and</strong>s 2 have to be firmly tightened.<br />
• Close the unused cable gl<strong>and</strong>s using blanking plugs 1.<br />
• Do not remove the specified outer sheath from the cable gl<strong>and</strong>.<br />
Figure 4-8: Cable gl<strong>and</strong><br />
1 Close the unused cable gl<strong>and</strong>s using blanking plugs.<br />
2 The cable gl<strong>and</strong>s have to be firmly tightened.<br />
3 The cable has to be laid with a loop.<br />
01/2012 - 4000287103 MA <strong>DK32</strong>-34-37-R05-en<br />
www.krohne.com<br />
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