<1. Introduction>
3
IM 01E24A01-01EN
1.1 For Safe Use of Product
For the protection and safe use of the product and the
system in which this product is incorporated, be sure to
follow the instructions and precautions on safety that is
stated in this manual whenever you handle the product.
Take special note that if you handle the product in a
manner that violated these instructions, the protection
functionality of the product may be damaged or impaired.
In such cases, YOKOGAWA shall not be liable for any
indirect or consequential loss incurred by either using or
not being able to use the Product.
(1) General
• This product conforms to IEC safety class I (with
Protective grounding terminal), Installation Category
(Overvoltage Category) II, No Measurement Category
(“O”(Other)), Micro Pollution degree 2, Macro
Pollution degree 4.
• This product conforms to EN61326-1, EN61326-2-3,
EN61326-2-5, EN61000-3-2, and EN61000-3-3 (EMC
standard).
• This product is an EN61326-1 (EMC standard), Class
A (for use in commercial, industrial, or business
environments).
• This product is complied with IP66 and IP67, IP68
(only for Submersible type) in the EN60529.
YOKOGAWA assumes no liability for the customer’s
failure to comply with these requirements.
• This product is designed for indoor and outdoor use.
CAUTION
This product is a Class A product in the EN61326-
1(EMC standard). Operation of this product in a
residential area may cause radio interference, in
which case the user is required to take appropriate
measures to correct the interference.
IMPORTANT
The minimum ambient temperature is limited by the
minimum fluid temperature of the sensor (the lining).
For more information, read the applicable general
specifications as listed in Table 1.1.
The flowmeter may be used in an ambient humidity
where the relative humidity ranges from 0 to 100%.
However, avoid long-term continuous operation at
relative humidity above 95%.
WARNING
• Purpose of use
This product is the Magnetic Flowmeter for use of
measuring the liquid flow. Do not use this product for
other purposes.
WARNING
• Installation, wiring and maintenance of the magnetic
flowmeter must be performed by expert engineer
or skilled personnel. No operator shall be permitted
to perform procedures relating to installation, wiring
and maintenance.
• Wiring work should be done adequate wire, sleeve
crimp and torque force. Use terminal with insulating
cover for the power supply wiring and protective
grounding wiring. Do not pull the wires too much
strongly in order to prevent electric shocks caused
by their damage.
• Do not open the cover in wet weather or humid
environment. When the cover is open, stated
enclosure protection is not applicable.
• Ensure that the power supply is off in order to
prevent electric shocks.
• When opening the cover, wait for more than 20
minutes after turning off the power. Only expert
engineer or skilled personnel are permitted to open
the cover.
• When opening and closing the transmitter cover, be
sure to handle the transmitter cover carefully so that
there are no damage and foreign matter adhesion at
its threads and O-ring.
• This product employs the parts which are affected
by a function damage caused by static electricity.
Thus, you should do the antistatic work using an
anti-static wrist band for it and be careful to avoid
touching each electrical parts and circuitry directly.
• When connecting the wiring, check that the supply
voltage is within the range of the voltage specified
for this product before connecting the power cable.
In addition, check that no voltage is applied to the
power cable before connecting the wiring.
• To prevent electric shocks, ensure the electrical
wiring cover is completely attached after the wiring
work.
• To prevent electric shocks, do not impress over
rated voltage to each input/output terminals.
• If there is any unused cable entry, use the blanking
plug to cover which comes with this product or
which is supplied by YOKOGAWA. The blanking
plug should be fastened into the unused cable
entry without any mistake. If not, stated enclosure
protection is not applicable.
• To prevent electric shocks, do not remove safety
cover (Read section 3.6).
IMPORTANT
• When closing the cover, close it with both hands
until the cover does not turn in order to bring the
housing and cover into tight contact.
• Tighten while confirming that the cover rotates
smoothly.
1
Introduction