KRAL OMG 13 - Table of Contents

2 OIO 14en Edition 07/2017 Operating Instructions
Table of contents
KRAL Flowmeter – OMG Series
About this document
□ General information 3
□ Target groups 3
□ Symbols 3
□ Danger levels 3
□ Associated documents 4
Safety
□ Proper use 5
□ Safety information 5
Labelling
□ Type code 6
□ Rating plate 7
Technical data
□ Operational limits 8
▪ Load due to pressure pulsation 8
▪ Maximum values 8
▪ Substitute operating data 10
□ Sound pressure level 10
□ Dimensions and weights 10
▪ OMG with BSPP thread 10
▪ OMG with DIN flange 11
□ Load-bearing capacity 12
▪ Load-bearing capacity OMG 13 12
▪ Load-bearing capacity OMG 20 13
▪ Load-bearing capacity OMG 32 14
▪ Load-bearing capacity OMG 52 15
▪ Load-bearing capacity OMG 68 16
▪ Load-bearing capacity OMG100 17
▪ Load-bearing capacity OMG140 18
Heating system
□ Electric heating system 19
□ Fluid heating system 20
□ Trace heating system 20
Function description
□ Description 21
□ Roller bearings 22
□ Signal generation 22
□ Linearization 22
□ Temperature compensation 23
□ Flow direction detection 23
□ Junction box 23
Transportation, storage and disposal
□ Unpacking and checking the state of
delivery 24
□ Lifting the flowmeter 24
□ Storage 24
□ Preservation 25
▪ Preserving the flowmeter 25
▪ Removing the preservation 25
□ Disposal 26
Installation, removal and connection
□ Safety instructions for installation and
removal 27
□ Installing the flowmeter 27
▪ Installation types 27
▪ Preferred installation variant 28
▪ Recommendations for alternative
installation variants 28
▪ Protect the flowmeter against soiling 29
▪ Connecting the flowmeter to the pipe
system 29
□ Electrical connection 30
▪ Safety instructions for electrical
installation 30
▪ Connection for the pick ups 30
□ Removing the flowmeter 30
Operation
□ Commissioning 32
▪ Cleaning the pipe system 32
▪ Checking the function 32
▪ Commissioning the flowmeter 32
□ Switching off the flowmeter 33
▪ Safety instruction for switching off the
flowmeter 33
▪ Switching off the flowmeter 33
□ Recommissioning the flowmeter 33
Maintenance
□ Safety instructions on maintenance 34
□ Required maintenance 34
□ Re-calibration of the flowmeters 34
□ Mounting instructions OMG 13 35
▪ Removing seals and bearings 35
▪ Installing seals and bearings 36
□ Mounting instructions OMG 20/32 37
▪ Removing seals and bearings 37
▪ Installing seals and bearings 38
□ Mounting instructions OMG 52/68 39
▪ Removing seals and bearings 39
▪ Installing seals and bearings 41
□ Mounting instructions OMG100/140 42
▪ Removing seals and bearings 42
▪ Installing seals and bearings 43
Troubleshooting
□ Possible faults 44
□ Troubleshooting 44
Appendix
□ General drawings 46
□ Parts list 50
□ Accessories 51
▪ Junction box 51
▪ Mounting and connecting the
junction box 52
▪ Connecting the extension cable 53
□ Tightening torques 53
□ Contents of the EC Declaration of
Conformity 54
□ Notes 55