Instruction Manual

16
Safety instructions
Use of the device that does not comply with the
instructions could present risks to people, nearby
installations and the environment.
• This device must be protected against electromagne-
tic interference, ultraviolet rays and, when installed
outdoors, the effects of climatic conditions.
• When the flowmeter is disassembled from the pipe,
take all the precautions associated with the process.
atex
Said appliance must be installed in accordance with
the provisions of standard EN 60079-14: electrical
appliance for potentially explosive atmospheres.
Part 14: electrical installations in dangerous sites (other
than mines).
English
17
7. DESCRIPTION
Construction
The flowmeter SE30 Ex is an electronic module which must
be associated to a measuring element, either a fitting S030
(brass, stainless steel or PVDF) or a fitting S070.
atex
Depending on its place of use the SE30 Ex flowmeter
must be connected according to the safety instructions
of the chap. 6.
Electrical connection is made via a male fixed connector
EN 175301-803.
Measuring principle
The sensor detects the rotation of the paddle-wheel and
modulates the current of the supply line as per the Namur
standard (0.5 mA or 2.5 mA). The modulation frequency f is
proportional to the flow rate Q using the formula f = KxQ.
f = frequency in Hz
K= factor K specific to each fitting, in pulse/l
Q = flow rate in l/s
In order to exploit this signal, connect a Namur type intrinsic
safety barrier to the SE30 Ex. It detects the modulation and
converts it to a frequency on its open collector output.
English
17
18
Description of the name plate
SE30EX-NAMUR
II 1 G/D Ex ia IIC T6
Ex iaD 20 IP6X T80°C
Tamb : 0°C - +60°C
LCIE 04 ATEX 6070 X
S/N:1000
00552901 W46LN
F-67220 TRIEMBACH
13
5
7
11 9
6
10
4
12
0102
2
8
1. Protection rating
2. Type of flowmeter
3. Type of supply/output
4. ATEX classification
5. Maximum surface temperature
6. Ambient operating temperature
7. Certification body and ATEX number
8. CE logo and code of notified body that inspected the site
9. Manufacturing code and manufacturing year code
10. Order code
11. Serial number
12. Ex logo
English
19
Available versions of the
electronic flowmeter SE30 Ex
All the versions of the SE30 Ex flowmeter:
• are energized through an intrinsic safety barrier ;
• have a Namur output.
Version of the
SE30 Ex electronic
flowmeter
Electrical connection Order code
Namur II 1 G/D Male fixed connector
EN 175301-803
552901
NamurI M 1 553455
English
19