KROHNE OPTISONIC 7300 Ex EN - Manual (Page 9)

INTRODUCTION
1
9
OPTISONIC 7300 / 8300
www.krohne.com 05/2012 - 7312262200 - AD EX OPTISONIC 7300/8300 R02
1.6 OPTISONIC 8000...-Ex
The OPTISONIC 8000...-Ex high temperature (steam) flow sensor is for measuring (low and) high
temperature gases including steam. The thermal sensitive parts of the transducer are located at
a larger distance from the process medium inside the measuring tube. This meter is suitable for
process temperatures from -200°C up to +440°C.
The marking code is:
1.7 GFC 300 F/...-Ex
The GFC 300 F/...-Ex is the separate version of the ultrasonic flow converter and has flameproof
protected connections to the flameproof gas transducers of the ultrasonic flow sensor. The
ultrasonic gas flow converter is either provided with non-explosion protected or intrinsically safe
in-/outputs (“Ex ia” or “Ex ib”). The connection terminals of these in-/outputs are located in the
terminal compartment, which is either configured as “Ex d” or “Ex e”.
The marking code can be:
1.8 Ultrasonic gas transducers
The OPTISONIC 7000...-Ex gas flow sensor, can be equipped with the ultrasonic gas transducers
made of titanium (type G7.01 and G7.04) or with the gas transducers of type G5.nn and G6.nn
(body: stainless steel, front part: epoxy compound).
The gas transducers of type G7.01 and G7.04 have type of protection “flameproof enclosure”
(Ex d) in accordance with EN 60079-1. The electrical connections are established in specially
designed flameproof enclosures with a free volume well below 100 cm
3 .
Optionally the under KEMA 07 ATEX 0181 X approved gas transducers of type G5.nn and G6.nn
can be used. These gas transducers have types of protection “flameproof enclosure” (Ex d) in
accordance with EN 60079-1 and “encapsulation” (Ex ma) conform to EN 60079-18.
These transducers have marking code: II 1/2 G Ex d ma IIC T4...T6.
The high temperature transducers (OPTISONIC 8000-Ex) are always flanged and have type of
protection flameproof enclosure (Ex d).
See Chapter 2 for details on the temperature classification table(s).
OPTISONIC 8000-Ex
II 2 G Ex d IIC T6...T1
"Ex d" terminal compartment "Ex e" terminal compartment
II 2 G Ex d IIC T6 II 2 G Ex de IIC T6
II 2 G Ex d [ia] IIC T6 (PTB)
II 2 (1) G Ex d [ia] IIC T6 (DEKRA)
II 2 G Ex de [ia] IIC T6 (PTB)
II 2 (1) G Ex de [ia] IIC T6 (DEKRA)
II 2 G Ex d [ib] IIC T6 II 2 G Ex de [ib] IIC T6