Cameron BARTON 289A - Appendix A-Model 199 DPU User Manual

APPENDIX A
BARTON
®
NUCLEAR MODEL 199
DIFFERENTIAL PRESSURE UNIT (DPU)
User Manual
Part No. 9A-C10034, Rev. 03
November 2018
Contents
Technical Support ......................................................................................A-2
Section 1—Introduction ..............................................................................A-3
General ......................................................................................................A-3
Product Description....................................................................................A-3
Specications ............................................................................................. A-4
Section 2—Theory of Operation .................................................................A-5
Basic Components ..................................................................................... A-5
Pressure Housings.....................................................................................A-5
Bellows.......................................................................................................A-5
Range Springs ...........................................................................................A-7
Torque Tube Assembly...............................................................................A-7
Pulsation Dampener ..................................................................................A-8
Section 3—Installation/Operation ..............................................................A-9
Unpacking ..................................................................................................A-9
Mounting ....................................................................................................A-9
Flush or Panel Mounting ............................................................................A-9
Piping—Standard Practices .......................................................................A-9
All Applications (Flow and Liquid Level).....................................................A-9
Flow Applications .....................................................................................A-10
Liquid Level Applications..........................................................................A-10
Piping Diagrams.......................................................................................A-11
General Startup Practice Considerations.................................................A-17
Section 4—Maintenance, Adjustment, & Calibration .............................A-18
Tools Required for Maintenance and Calibration .....................................A-18
DPU Inspection and Cleaning .................................................................. A-18
Pressure Check Procedure ...................................................................... A-18
Inspection and Cleaning Procedure ......................................................... A-19
Calibration Setup .....................................................................................A-20
Torque Tube Rotation Check (Replacement Units)..................................A-21
Range Change ......................................................................................... A-21
2-1/8-inch Diameter Bellows ....................................................................A-21