KROHNE DW 181-182-183-184 EN User Manual

Page 3

Installation and operating instructions DW 181 - 184

Service………………………………………………………………………………………... 16

5.1

Maintenance………………………………………………………………………………….. 16

5.2

Exploded view of instruments………………………………………………………………. 16

5.3

Spare parts……………………………………………………………………………………. 18

5.4

Inspection procedure………………………………………………………………………… 21

5.4.1

Inspection procedure: measuring assembly…………………………………………….. 21

5.4.2

Inspection procedure: housing (DW181 & DW182 models)…………………………... 21

5.5

Basic servicing procedures………………………………………………………………….. 22

5.5.1

Changing the position of the dial on the type A indicator……………………………… 22

5.5.2

Removing the display assembly: operating faults in the housing DW18x Std /EExia flow
controllers equipped with type G or A indicators……………………………………….. 23

5.5.3

Cleaning the springs or changing the measuring system sub-assembly…………….. 24

5.5.4

Changing gaskets in DW 183 flow controllers…………………………………………. 24

Technical Data………………………………………………………………………………. 25

6.1

Flow range table by flow range code………………………………………………………. 28

6.2

Instrument version materials………………………………………………………………... 30

Dimensions and Weights………………………………………………………………….. 31

Measuring Principle………………………………………………………………………… 36

8.1

Measuring systems…………………………………………………………………………... 36

8.2

DW 183………………………………………………………………………………………... 36

Appendix A: Declaration of conformity: CE………………………………………………….. 37

Appendix B: If you need to return a device for testing or repair to KROHNE…………. 38