(2) Installation
WARNING
• The vortex
flowmeter must be installed within
the specification conditions.
• The vortex flowmeter is a heavy instrument. Be
careful that no damage is caused to personnel
through accidentally dropping it, or by exerting
excessive force on the vortex flowmeter. When
moving the vortex flowmeter, always use a
trolley and have at least two people carry it.
• When the vortex flowmeter is processing
hot fluids, the instrument itself may become
extremely hot. Take sufficient care not to get
burnt.
• When the fluid being processed is a toxic
substance, avoid contact with the fluid and
avoid inhaling any residual gas, even after the
instrument has been taken off the piping line for
maintenance and so forth.
• Do not apply excessive loads, for example, a
person stepping on the vortex flowmeter.
• Defects in protection functions
If you feel that the protection functions of this
product are defective, do not operate this
product. Also, before operating this product,
check to see if the protection functions are
defective.
• Use in gaseous environments
In an explosion protected environment, select
an explosion protected type. When a general
type is selected, do not operate this product
at locations where flammable and explosive
gases, steam and burnable dust are present.
Use of this product in such environments is
very dangerous. Use of this product for a long
period of time in environments where high
concentrations of corrosive gas (H2S, SOx, etc.)
are present may cause failure.
• Damage to protective structure
The protective structure of this product may be
impaired if it is operated in a way not described
in this manual and in the related documents
indicated in Table 1.1.
• Take care not to site this product near motors,
transformers, inverters, and other power
sources nearby. Failure to do so might cause
inductive interference
• All procedures relating to installation must
comply with the electrical code of the country
where it is used.
(3) Wiring
WARNING
•
When connecting the wiring, check that the
supply voltage is within the rated voltage range
specified for this instrument before connecting
the power cable. In addition, check that no
voltage is applied to the power cable before
connecting the wiring.
• Use external wiring having an allowable
temperature 15°C or higher than the ambient
temperature.
• When wiring in conduits, use waterproof union
covers to prevent water from flowing into the
cable entries through the conduits. Also, install a
drain valve and periodically drain the conduits.
• To prevent damage from condensation and to
ensure insulation inside terminal boxes, do not
connect cables outdoors in wet weather.
• Do not remove the transmitter case. This can be
removed only by Yokogawa service personnel.
(4) Operation
WARNING
After setting parameters,
use the write protect
function to disable overwriting of parameters.
For details on the hardware write protect function
and software write protect function, read the
communication manual in the related documents
indicated in Table 1.1.
<1. Introduction>
5
IM 01F07A01-01EN
Introduction
1
