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
4 ELECTRICAL CONNECTIONS DK32 - DK34 - DK37 4.6 Ground connections The earthing can be done on the head piece of the measuring section (M4 threaded hole) Figure 4-7: Ground connections 1 Earth connection on the measuring section DANGER! The earth conductor must not transfer any interference voltage. Do not use this earth conductor to ground any other items of electrical equipment. 20 www.krohne.com 01/2012 - 4000287103 MA DK32-34-37-R05-en
DK32 - DK34 - DK37 ELECTRICAL CONNECTIONS 4 4.7 Protection category The variable area flowmeters DK32 / DK34 / DK37 have been tested for ingress protection according to EN 60529. The following grades of protection are confirmed: Ingress Protection EN 60529 Mechanical version without cable glands Electrical version with cable glands DK32 / DK34 IP66 / IP68 IP65 DK37 IP66 IP66 DANGER! After all servicing and maintenance work on the flowmeter, the specified protection category has to be ensured again. 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 2 have to be firmly tightened. • Close the unused cable glands using blanking plugs 1. • Do not remove the specified outer sheath from the cable gland. Figure 4-8: Cable gland 1 Close the unused cable glands using blanking plugs. 2 The cable glands have to be firmly tightened. 3 The cable has to be laid with a loop. 01/2012 - 4000287103 MA DK32-34-37-R05-en www.krohne.com 21
- Page 1 and 2: DK32 - DK34 - DK37 Handbook Variabl
- Page 3 and 4: DK32 - DK34 - DK37 CONTENTS 1 Safet
- Page 5 and 6: DK32 - DK34 - DK37 SAFETY INSTRUCTI
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- Page 9 and 10: DK32 - DK34 - DK37 DEVICE DESCRIPTI
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- Page 13 and 14: DK32 - DK34 - DK37 INSTALLATION 3 3
- Page 15 and 16: DK32 - DK34 - DK37 ELECTRICAL CONNE
- Page 17 and 18: DK32 - DK34 - DK37 ELECTRICAL CONNE
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- Page 23 and 24: DK32 - DK34 - DK37 SERVICE 6 6.1 Ma
- Page 25 and 26: DK32 - DK34 - DK37 SERVICE 6 6.4.2
- Page 27 and 28: DK32 - DK34 - DK37 TECHNICAL DATA 7
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- Page 39 and 40: DK32 - DK34 - DK37 NOTES 8 01/2012
4 ELECTRICAL CONNECTIONS<br />
<strong>DK32</strong> - DK34 - DK37<br />
4.6 Ground connections<br />
The earthing can be done on the head piece of the measuring section (M4 threaded hole)<br />
Figure 4-7: Ground connections<br />
1 Earth connection on the measuring section<br />
DANGER!<br />
The earth conductor must not transfer any interference voltage.<br />
Do not use this earth conductor to ground any other items of electrical equipment.<br />
20<br />
www.krohne.com<br />
01/2012 - 4000287103 MA <strong>DK32</strong>-34-37-R05-en
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