Barton 199 DPU Manual - Part No. 9A-10030 - Cameron

More documents

Recommendations

Info

All NuFlo Barton instruments using 199 DPU as as actuator are are calibrated at the at the factory. factory.All DPUs sold as replacement units or or as as actuators for for other other applications are arechecked for accuracy prior to to shipment.
4-5. Range ChangeChanging the range of the Model 199 DPU requires replacing the bellows unitassembly with a unit of the desired range (see para. 4-7 Bellows Unit Assembly(BUA) Replacement).WARNING(High-pressure Gas Installationswith pressures greater than 200 psig)HIGH-PRESSURE GAS HAZARD ON DISASSEMBLY OF THE DPU.TO PREVENT POSSIBLE SEVERE PERSONAL INJURY, DEATH,OR SUBSTANTIAL PROPERTY DAMAGE DUE TO THE RELEASEOF INTERNAL PRESSURE, PERFORM THE PRESSURE CHECKPROCEDURE IN PARA. 4-2, Step A BEFORE REMOVING THEDPU HOUSING BOLTS.NOTICEIf accumulation of solids or semi-solids is extensive, remove the housingscarefully to prevent damaging the bellows.WARNING(Housing Bolts)DO NOT REUSE HOUSING BOLTS. IF BOLTS AREDISTURBED, REPLACE WITH NEW BOLTS, PER TABLE 4-2(STANDARD) or TABLES 4-3/4-4 (NACE).REUSE OF HOUSING BOLTS, ESPECIALLY IN CRITICALAPPLICATIONS LIKE HYDROGEN SULFIDE AND SALT WATEREXPOSURES, CAN RESULT IN SEVERE INJURY, DEATHOR SUBSTANTIAL PROPERTY DAMAGE DUE TO BOLTFAILURE.NOTICE: The calibration range of the DPU was carefully set at the factory. Thefollowing procedure maintains the original factory bellows travel setting whilethe range spring change is performed. This procedure must be strictly followedwhile changing the range spring assembly or altering the adjustment.To replace the range spring assembly with either a new assembly of the samerange or one with a different range value, proceed as follows (this procedure assumesthat the DPU is either connected to an indicating instrument or fitted witha scale and pointer to measure torque tube shaft movement):A. 2-1/8-inch Dia. Bellows1. Remove the D PU from service.2. Remove the pressure housing bolts and the low-pressure housing.3. With the pointer at zero, remove the spring retainer screw, retainersprings, and the range spring assembly.NOTE: The pointer will shift from zero. This is a normal action and thepointer should not be readjusted at this point.4. Install the new range spring assembly onto the push rod, and replacethe spring retainer screw.(Continued on next page)19
Page 1 and 2: MODEL 199DIFFERENTIAL PRESSURE UNIT
Page 3 and 4: SECTION 1 - INTRODUCTION1-1. Genera
Page 5 and 6: SECTION 2 - THEORY OF OPERATION2-1.
Page 7 and 8: D. Torque Tube AssemblyCenter Plate
Page 9 and 10: SECTION 3 - INSTALLATION/OPERATION3
Page 11 and 12: 3-4. General Startup Practice Consi
Page 13 and 14: SECTION 4 - MAINTENANCE, ADJUSTMENT
Page 15 and 16: Table 4-2. Standard Bolt Torque Rat
Page 17: Table 4-4. Special 6,000 PSI NACE B
Page 21 and 22: C. 3-3/4-inch Dia. Bellows w/Kickof
Page 23 and 24: 4-7. Bellows Unit Assembly (BUA) Re
Page 25 and 26: 4-10. Adjusting Pulsation Dampener
Page 27 and 28: SECTION 5 - PARTS DRAWING/LIST5-1.
Page 29 and 30: Table 5-1. 199 Parts List (Continue
Page 31 and 32: Figure 6-1. 199 DPU Dimension Drawi

Barton 199 DPU Manual - Part No. 9A-10030 - Cameron

Create successful ePaper yourself

Delete template?

Save as template?