KROHNE BM 26 A EN - Manual (Page 40)

40 Installation and Operating Instructions BM 26 A
7.2 Technical data: level transmitter modules
Name PRETOP 5343B PR 5350B PR 5335B
Description
4 … 20mA. Conversion of
resistance variation to
analogue current signals. PROFIBUS PA or FF.
Conversion of resistance
variation. 4-20mA+HART ® .
Conversion of resistance
variation to analogue
current signals.
Connection of up to 15
transmitters to a digital 2-
wire signal with HART
communication.
Output
4 … 20 mA
(limits : 3.5 & 23 mA) PROFIBUS ® PA protocol
Profile A&B, ver. 3.0 (EN
50170 vol.2) or
FOUNDATION™
Fieldbus protocol
4 … 20 mA
(limits : 3.5 & 23 mA) and
HART
® protocol (loop link)
Max. load R
L
(U – 8) Ohms
0.023 - (U – 8) Ohms
0.023
Measuring
error
± 10 mm
Power supply 8 … 35Vdc
8 … 30Vdc (ATEX)
9 … 32Vdc
9 … 30Vdc (ATEX) 8 … 35Vdc
8 … 30Vdc (ATEX)
Ambient
temperature
Refer to table in “ATEX applications: special conditions for safe use”, section 7.1
Approvals
Ex
EEx ia, EEx d
Max power
dissipated by
Exd housing,
P
max
5 W
Max voltage
for Exd
housing, U
max
36 V
Max safety
values for Exi
applications
U
i
28V
30 V
28V
I
i
120mA 120mA 120mA
P
i
0.84W 0.84W 0.84W
C
i
1nF 2nF 1nF
Terminal
block
L
i
10µH 1µH 10µH