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Wiring Precautions
(1) Connect the grounding wire (IV wire 5.5mm² or
more) to a good earth ground (100Ω or less
ground resistance). Make the wire as short as
possible. Do not use a common ground shared
with other equipment where earth current may
flow.
An
independent
recommended.
(2) Digital output 1, Digital output 2 and Digital input
use the same common terminal (COM). This
COM can not be connected to other equipment
which has their own ground terminal. (Power
supply for connecting to DI or DO, etc...) Need
to wire separately.
Wiring Precautions (PROFIBUS/Modbus)
(1) For wiring path, avoid places near electrical
equipment that may cause electromagnetic
induction or electrostatic induction interference
(such as a motor, transformer and wireless
transmitter).
(2) Use a PROFIBUS-PA cable or a RS485
twisted-pair
cable
communication cable into the metal conduit
(measure of EMC* ) so that electromagnetic
flowmeter may not be conformed regulation of
EMI.
*NIPOLEX EM-04(by NIPPON-FLEX) etc.
(3) General cables are designed for indoor use where
cables are not exposed to humidity, rain, etc.
When you install cables, make sure to check the
operating conditions such as the operating
temperature range of the cable by contacting its
manufacturer.
(4)When you carry out cable end treatment, use a
dedicated cable stripper so that the core wire of the
cable will not be nicked or damaged. In addition,
for cables, be careful of allowable maximum bend
diameter etc. (Do not install cables in a way cables
are twisted or bent.).
(5) Consider installing a PROFIBUS-PA arrester in the
communication path of PROFBUS-PA so that the
electromagnetic flowmeter will not be affected by
lightning etc.
(6) The electromagnetic flowmeter is not equipped
with terminating resistors in the PROFIBUS
communication. Use the terminating resistor unit
for PROFIBUS-PAor junction box, if necessary.
(7) Please install the terminator (bundling) in the
electromagnetic flowmeter connected with the end
in the Modbus communication.
earth
ground
for
signal
cable.
Place
(8) When wiring is completed, male sure to install the
terminal block protection cover.
(9) Do not carry out withstand voltage test for the
converter
of
addition, perform insulation check using a voltage
of 250VDC or less.
is
(10) Only one communication cable goes through a
cable gland of the electromagnetic flowmeter.
Please
use
configuration.
Flow rate and Flow velocity
Table1. Flow rate
Meter
size
0.3m/s
(mm)
500
212.2
600
305.4
700
415.6
800
542.9
900
687.1
1000
848.2
1200
1,221
1350
1,546
1400
1,663
1600
2,171
1650
2,309
1800
2,748
1950
3,225
2000
3,393
Calibration Range
If the calibration range is not specified, the
standard range as shown below will be used.
If the range is specified, we will use the specified
range for calibration.
Table2. Standard flow range
Meter size
(mm)
500
600
700
800
900
1000
1200
1350
1400
1600
1650
1800
1950
2000
Note: The information contained in this document is
electromagnetic
flowmeter.
the
junction
box
at
Unit : m3/h
Flow velocity
1m/s
3m/s
706.9
2,121
1,018
3,054
1,385
4,156
1,810
5,429
2,290
6,871
2,827
8,482
4,072
12,215
5,153
15,495
5,542
16,625
7,238
21,715
7,698
23,093
9,161
27,483
10,751
32,254
11,310
33,929
Standard Flow range
Flow rate (m
/h)
Flow velocity (m/s)
3
3,000
4.244
4,000
3.930
5,000
3.610
7,000
3.315
9,000
3.057
10,000
3.537
12,000
3.930
16,000
3.105
16,000
2.888
16,000
2.211
16,000
2.079
16,000
1.747
16,000
1.488
16,000
1.415
EJL-146C
In
system
10m/s
7,069
10,179
13,854
18,096
22,902
28,274
40,715
51,530
55,418
72,382
76,9777
91,609
107,513
113,097
7
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