E-026-3-E
The receiving instrument in this figure requires a load resistance 250
Ω
min. Its upper limit depends on the
specification of the transmitter in use.
If the receiving instrument does not have a built-in R
L
, an external R
L
needs to be connected in series.
Relay terminal block
Fig. 2-1
LINE/+
NEUT/-
+
4 to 20mADC
−
OVAL ultrasonic flowmeter
Receiving instrument
(load resistance R
L
built-in)
R
L
Power
supply
LINE/+
NEUT/−
+
−
Probe
Polarity observation is not required.
Connect the probes and - terminals
of analog output.
Connected
point
Bell202 communication
interface
Flowmeter
transmitter
2.2 Hookup with Associated Equipment and Devices
Equipment set-up with associated equipment and devices is shown in Fig. 2-1. (Prepare a PC by yourself.)
Application software
(LinkTop
®
)
- Procedure of connection -
(1) Connect the cables as shown in Fig. 2-1.
(2) Turn ON the power supply of PC and activate LinkTop for Psonic-L4.
(3) Turn ON the power supply of flowmeter.
* Before connecting the communication cable to the flowmeter transmitter, turn OFF the power supply of
flowmeter.
NOTE: In Fig. 2-1, the customer is to supply a PC that meets the following requirements:
¯
OS: Windows XP, Windows Vista, Windows 7 to 10
¯
RAM: 256MB or larger
¯
Hard disk: 10MB or larger free space
¯
USB port that is suitable for connecting to the communication interface to be used shall
be provided. A USB port is required when using Bell202 communication interface for OVAL
Smart Communication Unit EL2310.
