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HPP-4 Positioner

Appendix

HPP-4

18

September 1999

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Summary of Contents for HPP-4

Page 1: ...of Construction 4 Accessories 4 Principals of Operation 5 Close on increasing 5 Open on increasing 6 Adjustment Procedure 7 Deadband Setting 8 Bias Adjustment 9 Range Adjustment 10 Section Page Chang...

Page 2: ...n ac tuator The HPP 4 design positioner represents Becker s commitment to continuos development of new products and updating of existing products to maximize their performance while re taining simple...

Page 3: ...High Gain Systems Power plant feeds and other similar systems require fast stroking speed in order to satisfy re quired gain of the system The VB 250 Volume Boosters are applied based upon actuator s...

Page 4: ...Acting Close on loss of signal Connections All Ports N P T Action Direct and Reverse Acting Field reversible Performance Resolution 0 2 Hysteresis 1 0 Flow Capacity CV 1 5 Steady State Consumption See...

Page 5: ...ts in the lower seat being pushed into the lower nozzle due to an imbalance in the beam forces At the same time the top seat moves away from the top nozzle This increases the pressure in the cylinder...

Page 6: ...seat being pushed into the upper nozzle due to an imbalance in the beam forces At the same time the bottom seat moves away from the bottom nozzle This increases the pressure in the cylinder top while...

Page 7: ...s im perative that adequate supply gas pres sure be supplied to the VRP CH in or der to ensure proper operation of the system and all accessories 2 Adjust the adjustable orifices The adjustable orific...

Page 8: ...nce Pressure equations HPP 4 Discharge to PRESSURE SYS TEM NO Volume Boosters Pc Pd 0 4 Ps Pd Equation 1a HPP 4 Discharge to Atmosphere NO Volume Boosters Pc 0 4 Ps Equation 1 b Deadband Setting 1 Tur...

Page 9: ...her rais ing the spring retainer or screwing the bias adjustment stud into the in dicator bar or tail rod Note the two jam nuts tightened against one an other to adjust the length of the stud When pro...

Page 10: ...the HPP 4 starts valve movement until the end of the valve stroke and full pressure differential across the cylinder output gauges 1 After setting the bias for the start of the valve travel continue...

Page 11: ...til the desired range provides full or zero output pressure 4 If the desired range is not achieved after making the above adjust ments readjust the bias per the previous instructions to allow proper r...

Page 12: ...i tioner 2 Remove the range spring item 4 at both ends and those items connecting it to the rod item 23 and the posi 3 Remove the positioner from the bracket item 18 The tubing and fittings on each si...

Page 13: ...tered before tightening the spring cartridge 3 For open on increasing positioner Remove the washer and jam nut from the adjusting screw in the bias spring Stroke Close on Increasing Open on Increasin...

Page 14: ...e the positioner nozzles may not be adjusted properly See the adjust ment instructions to calculate the correct balance pressure Reduce the output pressures by turning the drum in the direction of inc...

Page 15: ...send one cylinder output gauge to full power gas Refer to Procedure 7 note pages 9 Adjustment Procedure 6 __________ Check response of HPP 4 positioner Varying input signal 1 4 psig should produce cy...

Page 16: ...gm 25 1213 11 12 13 1 8 Roll Pin SS 98 2950 14 8 32 x 1 SHCS 98 3144 15 Beam Block 25 1086 16 Outside piston 25 1018 17 3 16 x 1 2 Roll Pin SS 98 3089 18 1 4 20 x 2 1 2 HHCS 98 3180 19 Gauge Manifold...

Page 17: ...HPP 4 Positioner Parts List HPP 4 17 September 1999...

Page 18: ...HPP 4 Positioner Appendix HPP 4 18 September 1999...

Page 19: ...HPP 4 19 September 1999 HPP 4 Positioner Appendix...

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