ELIS PLZEŇ a. s.
Project design, installation and service manual
Page 27 of 72
Electromagnetic flowmeter FLONET FH30xx
ELIS PLZE
Ň a. s., Luční 425/15, 301 00 Plzeň, Czech Republic, phone.: +420 377 517 711, fax: +420 377 517 722
Es 90678K
The output and communication signals shall be connected to the target devices via shielded cables.
The cable shielding shall be connected at one end only, to the PE terminal, located on the terminal
blocks.
5.1.2 Excitation circuit
Excitation current
I = 200mA
Maximum voltage:
Umax = 30V
5.1.3 Signal cables
The maximum length of the signal cables depends on the measured fluid conductivity and electric
parameters of the cables themselves.
To eliminate risk of electromagnetic interference via the connecting cables, the transmitter shall be
located as close as possible to the meter sensor.
The relationship between the measured fluid conductivity and the maximum length of the cables
connecting the meter transmitter and sensor is shown in the following graph:
Terminals
DC power source
C (+)
24V
± 20% (19.2 to 28.8VDC)
D (
–)
PE
Output signals
Terminals
Functions
1
A
RS-485 MODBUS RTU
2
B
3
−
OUT1
Binary output
4
+
5
−
OUT2
6
+
7
−I (H1)
Current output
8
+I (H2)
