KROHNE DK 32 Purge EN - Manual (Page 16)

4
ELECTRICAL CONNECTIONS
16
DK32
www.krohne.com 04/2011 - 4000898801 MA DK32 Air purge set R02 en
4.4 Ground connections
4.5 Protection category
Therefore it is essential to observe the following points:
• Use only original gaskets. They must be clean and free of any damage. Defective gaskets have
to be replaced.
• The electrical cables used must be undamaged and must comply with regulations.
• The cable has to be laid with a loop 3 upstream of the flowmeter to prevent water from
getting into the housing.
• The cable glands 1 have to be firmly tightened.
• Close the unused cable glands using blanking plugs 2.
• Do not remove the specified outer sheath from the cable gland.
Ground connections DK32
Figure 4-4:
1 Earth connection on the measuring section (M4 threaded hole)
DANGER!
The earth conductor must not transfer any interference voltage. Do not use this earth conductor
to ground any other items of electrical equipment.
DANGER!
After all servicing and maintenance work on the flowmeter, the specified protection category
IP65 has to be ensured again.
1 The cable glands have to be firmly tightened.
2 Close the unused cable glands using blanking plugs.
3 The cable has to be laid with a loop.
MA_DK32_Purge_R02_en_898801_PRT.book Page 16 Wednesday, April 6, 2011 3:01 PM