Hookup With Associated Equipment And Devices - Oval EL 2310-0BE Series Instructions Manual

E-025-2-E

2.2 Hookup with Associated Equipment and Devices

Equipment set-up with associated equipment and devices is shown in Fig. 2.
(1) In case of RS485 communication
PC with communication
The flowmeter has no built-in terminating resistor. The customer is required to install a terminating
resistor of 120Ω/0.5W at the terminal of the line.
(2) In case of Bell202 communication
OVAL Electromagnetic
Flowmeter
Flowmeter
Transmitter
PC with communication
software installed
The receiving instrument in this figure requires a load resistance 250Ω min. Its upper limit depends on
the specification of the transmitter in use.
If the receiving instrument does not have a built-in RL, an external RL needs to be connected in series.
NOTE :
In Fig. 2, the customer is to supply a PC that meets the following requirements:
◇ Operating System: Windows XP, Windows Vista, or Windows 7 to 10
◇ RAM: 256MB or larger
◇ Hard disk: 10MB or larger
◇ Serial ports (COM ports) such as USB port or RS232C that are suitable for
connecting to the communication interface shall be provided.
A USB port is required when using Bell202 communication interface for OVAL Smart
Communication Unit EL2310.

software installed
communication
Interface
Fig.2.1 In Case of RS-485 communication
LINE/＋
NEUT/−
＋
4 to 20mADC
−
Bell202 communication
Interface
Fig.2.2 In Case of Bell202 Communication
MAG-OVAL Ⅲ
Output Signal Terminal
RS-485 +
RS-485
+
−
Tie-point Terminal Block
Connection
Points
Probes
Polarity observation is not required.
Connect the probes across + and – terminals
of analog output.
−
Power
LINE/＋
NEUT/−
＋
RL
−
Receiving Instrument
(Load RL built-in)