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HPP-4 Positioner

Appendix

HPP-4

18

September 1999

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Содержание HPP-4

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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

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

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