Emerson EZH and EZHSO Series Pressure Reducing Regulators Manual de instrucciones descargar pdf (Pagina 9)

Type OS2

Table 16. Max. and Min. Spring Adjustment Ranges

MAX. AND

MIN.

BMS SPRING MAX. and MIN.

INTERVALS

∆1 and ∆2

Type Size

PMS box

(bar)

ø Wire

(mm)

Code

Wdsu setting (bar)

Min. low

point

possible

Max. high

point

∆1

(bar)

∆2

(bar)

Diaphragm

162 10

2.0 113 195 0.010 0.035 0.004 0.010

2.5 113 196 0.025 0.080 0.005 0.025

3.0 113 197 0.045 0.140 0.010 0.050

3.5 113 198 0.070 0.240 0.014 0.060

4.0 113 199 0.115 0.380 0.018 0.150

5.0 113 201 0.140 0.750 0.050 0.350

5.5 113 202 0.230 1.3 0.080 0.600

6.5 114 139 0.450 2.3 0.170 1.1

071 20

4.5 113 200 1.0 5.1 0.350 2.5

5.5 113 202 2.1 11.0 0.700 5.5

6.5 114 139 4.0 16.0 1.6 10.0

Piston

027

Not possible with only 1 BMS

017

Bellows

236 35

5.5 113 202 5.5 16.0 1.6 10.0

6.5 114 139 8.3 28.0 2.5 20.0

315 72 5.0 113 201 17.5 65.0 5.0 33.0

Table 17. Definitions

PSD box Maximum operating pressure for box

Pd Nominal downstream regulator pressure

Pd max Maximum downstream regulator pressure (normally closing regulator pressure)

Pd min Minimum downstream regulator pressure (disturbance in function with flow and/or inlet pressure is to be considered)

Pdo Maximum releasing pressure

Max. high point High regulator pressure at maximum

Max. low point Low regulator pressure at maximum remaining within the accuracy class

Max. low point possible Low regulator pressure at furthest maximum point (precision is not guaranteed)

Pdu Minimum releasing pressure

Min. high point High minimum regulator pressure

Min. low point Low regulator pressure at minimum remaining within the accuracy class

Min. low point possible Low regulator pressure at furthest minimum point (precision is not guaranteed)

Wdso Overpressure specific range obtained from slam shut valve

Wdsu Underpressure specific range obtained from slam shut valve

∆1

Minimum difference allowed between Pdo and Pd max. and/or between Pdu and Pd min.

∆2

Maximum difference allowed between maximum and minimum releasing pressure

DEFINITIONS

Table 18. Pressure Limitations

Max. Only Min. Only Max. and Min.

Pdo≤PMSbox(BMS)

Pdo≤Max.highpoint

Pdo≥Max.lowpoint

Pdo≥Pdmax.+∆1

Pd max. < PMS box (BMS)

Pdu≤Max.highpoint

Pdu≥Min.lowpoint

Pdu≥Pdmin.-∆1

Pdo≤PMSbox(BMS)

Pdo≤Max.highpoint

Pdo≥Pdmax.+∆1

Pdu≥Min.lowestpointpossible

Pdu≤Pdmin.-∆1

Pdu-Pdu≤∆2

SELECTION GUIDE LINES: PRESSURE LIMITATIONS

1 2 3 4 5 6 7 8 9 10 11 12

RELEASE RELAY 1
Type OS2 10

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Emerson EZH and EZHSO Series Pressure Reducing Regulators Manual de instrucciones Pagina 9

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