Siemens SIPART PS2 Manual de instalación del hardware - Página 17

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3.2

Introduction

In that condition where you are using a Double Acting SIPART PS2 with a Single Acting

actuator, the following must be considered:

With loss of supply air the Double Acting SIPART PS2 will lock in the last position. This

prevents the actuator spring from returning the valve to its fail-safe position. By using the

"venting" gauge block and properly piping the positioner to the actuator the air on the side

opposite the spring can be exhausted back through the air supply line.

Figure 3-1

Specifications

Supply Pressure = 7 BAR (101.5 PSI)

Table 3- 1

Venting

Gauge

Block

Ordering Information

The booster can be ordered as a kit to add to an existing positioner in the field, or can

ordered as an option on a new unit.

Kit Numbers

6DR4004-2RF Venting Gauge Block, Double Acting, ¼" NPT connections

6DR4004-2RE Venting Gauge Block, Double Acting, G 1/4 connections

Venting Gauge Block Installation Instructions

Hardware Installation Manual, 12/2014, A5E34388399-AD

SIPART PS2 Venting Gauge Block

Weight

Makrolon

With PS2

1.7 kg (3.8 lbs)

680.39 g (1.5 lbs)

Kit only

With PS2

5.3 kg (11.6

lbs)

Installing/mounting

3.2 Introduction

Explosion Proof

Kit only

680.39 g (1.5 lbs)