Safety precaution – Dwyer UXF2 User Manual
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Before use, read the following safety precaution to ensure correct operation of the flowmeter.
Ɣ
The following items are important for safe operation and must be fully observed. These items are classified
as "DANGER" and "CAUTION".
Warning & Symbol
Meaning
Incorrect handling may lead to a risk of death or severe injury.
Incorrect handling may lead to a risk of medium or light injury, or to a risk of
physical damage.
Ɣ The items noted under "
" may also result in serious trouble depending on circumstances.
Ɣ All the items are important and must be fully observed.
Caution on Installation and Piping
z
This product is not an explosion-proof structure. Do not use it in a place
with explosive gases, otherwise, this may result in serious accident such as
explosion, fire, etc.
z
The unit should be installed in a place conforming with the installation
requirements noted in this instruction manual. Installation in an improper
location may lead to a risk of electric shocks, fire, malfunction, etc.
z
The unit should be installed as noted in the manual. Improper installation
will cause failure, trouble or malfunction of the unit.
z
During installation, make sure that the inside of the unit is free from cable
chips and other foreign objects to prevent fire, trouble, malfunction, etc.
z
The items under "Caution on Installation" noted in the manual must be fully
observed; careless installation may result in trouble or malfunction of the
unit.
Caution on Wiring
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When performing wiring termination to prevent output trouble caused by
moisture, dew condensation or water leak, follow “Section 3.3 Flow
transmitter wiring” described in this manual
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Before performing the wiring work, be sure to turn OFF the main power to
prevent electric shocks.
z
Do not perform wiring work outdoors on rainy days to prevent insulation
deterioration and dew condensation; otherwise, it can result in trouble,
malfunction, etc.
z
Be sure to connect a power source of correct rating. Connection of a
power source of incorrect rating may lead to a risk of fire and injury.
z
The unit must be grounded as specified to prevent electric shocks or
malfunction.
z
The analog output signal cable should be wired as far away as possible
from high-voltage lines to prevent electrical interference as it will cause
malfunction of the unit.
z
To prevent malfunction of the unit, the analog output signal cable and
power cable should be wired through separate conduits.
SAFETY PRECAUTION
BULLETIN F-70