Emerson EZH and EZHSO Series Pressure Reducing Regulators Manuál s instrukcemi stáhnout pdf (Strana 13)

Standard Pilots

OPTIONS

RPE (Electric Heater)

The RPE is used for reheating gas supplying pressure

reducing regulator pilots. It avoids the inconveniences

caused by freezing which occur during large pressure drops.

(See instruction manual NTARPE).

ADGE 1” (Pre-expansion Exchanger)

The ADGE 1” replaces the standard pre-expansion relay. It

permits the gas to be reheated beyond pre-expansion without

using external energy sources. (See instruction manual

NTAADGE1). See table 3 for standard conﬁ gurations.

Mass volume corrector

Flow limiter

Remote control setting

Contact factory

TERMS

Failure Modes

FO: Fail to Open

Regulator Opens in the case of failure mode

The regulator tends to automatically open in the case

of failure of the main diaphragm or when there is an

interruption of the energy required for the displacement of

the regulation unit.

FC: Fail to Close

Regulator Closes in the case of failure mode

The regulator tends to automatically close in the case

of failure of the main diaphragm or when there is an

interruption of the energy required for the displacement of

the regulation unit.

Equipment:

- FO design: EZHFO - EZHSO - BERTIN EZ NO

MPNO

- FC design: EZH - BERTIN EZ - MPNF

Type BMP 114 MD Double-Diaphragm Pilot

(Figure 5)

The manometric box is equipped with two integral

diaphragms. The volume between these two diaphragms is

related to the driving pressure of the actuator.

Failure of the upper diaphragm will cause balance between

the driving pressure and the outlet pressure. Failure of the

lower diaphragm will cause evacuation the driving pressure

to the atmosphere.

In both cases the equipment tends to close due to lack of

driving pressure (Fail to Close).

PRE-EXPANSION DETERMINATION

MIN NOMINAL MAX

EZR 0.50 0.80 1.50

K1000 0.25 0.50 1.00

MPS 3.00 6.00 8.00

Table 4. Pre-expansion per Regulator (bar)

(Superior to downstream pressure (Pd))

A104

Table 5. Adjustable Pre-expansion Differential for EZH,

EZH FO, EZHSO, MP, Bertin EZ,

Working Monitor Regulator

or CPV Metering

MIN NOMINAL MAX

MP Pd + 1.2 Pd + 2.4 Pd + 4.8

BERTIN EZ Pd + 1.2 Pd + 2.4 Pd + 4.8

MPS Pd + 2 Pd + 4 Pd + 4.8

EZH, EZH FO,

EZHSO

Pd + 1.7 Pd + 2 Pd + 3

A105

Table 6. Adjustable Pre-expansion Differential for

Type FO Regulators

ACTUATOR NOMINAL

MPNO

BERTIN EZ NO

269 Pd + 0.8

374 Pd + 1.1

Adjustable from 0.4 to 1.3 bar

Adjustable according to size of actuator (factory set)

A106

Europe, Middle East, and Africa Only

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 23 24

Francel Pilot Systems 1
Standard Pilots 10

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