Sono 3000 Ex Version; Introduction; Description Of System; Installation Of Compact Version - Siemens SITRANS F US SONOFLO SONO 3300 Handbook

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SITRANS F US SONOFLO
5.12 SONO 3000 Ex
version

5.12.1 Introduction

5.12.2 Description of
system
5.12.3 Installation of
compact version
5.12.4 Electrical connec-
tion of compact
version
5. Signal converter installation
An Ex version of the SONO 3000 can be installed in areas of high explosion risk as a compact unit
or mounted remotely where installation conditions demand, i.e. the sensor and signal converter can
be installed separately at a distance of up to 15 m.
Compact installation
The system holds the following Ex approval: EEx de [ia/ib] IIC T6. The signal converter is mounted
in the cylindrical enclosure which is protected to category "d" (flame proof).
All electrical connections are made in the terminal housing in the front of the sensor. The terminal
housing is classified "e" (increased safety).
The connection terminals for the 24 V a.c./d.c. voltage supply meet the demands of increased safety
category "e".
The connection terminals for current, frequency/impulse output and fault relay are intrinsically safe
to the "ia" category.
The display and keypad are intrinsically safe to the "ib" category for use during operation.
As shown, the compact version is attached to the sensor. In a horizontal plane the signal converter
can be turned through 0-360° by loosening the four allen screws mounted in the base.
It is also possible to rotate the display/keypad in a vertical plane in steps of 90° by dismantling the
four allen screws mounted on the outer edge of the front cover so that the display/keypad can be
positioned as required. If the signal converter is turned more than 360° the cables will be damaged.
Horizontal positioning
Electrical connections are made through the front of the signal converter, in the terminal housing.
This housing is accessed by dismantling the four allen keys located on the outer edge of the front
cover, as shown in the figure.
The cover is retained via a wire, giving free access to the cable terminals.
The terminal housing is equipped with 1 PG 13.5 EEx e gland and 1 PG 13.5 EEx i gland. The mains
cable is fed through the black PS gland (black indicates increased safety "e") located in the left-hand
side as viewed from the front.
The outputs are fed through the blue PG gland (the colour blue indicates intrinsically-safe circuit "i")
located on the right-hand side. According to the Ex document issued, use of other unions is
permitted provided that these are as a minimum EEx-approved in category "e".
Electrical connection is made according to the connection diagram.
SFIDK.PS.029.Q3.02
Separate installation
Vertical positioning
27