Yokogawa EJX115A - Manual (Page 21)

<2. Handling Cautions>
2-13
IM 01C25K01-01E
2.11 Pressure Equipment
Directive (PED)
(1) General
EJX/EJA-E Series pressure transmitters are
categorized as piping under the pressure
accessories section of directive 97/23/EC,
which corresponds to Article 3, Paragraph 3 of
PED, denoted as Sound Engineering Practice
(SEP).
(2) Technical Data
Article 3, Paragraph 3 of PED, denoted as
Sound Engineering Practice (SEP).
(3) Operation
CAUTION
• The temperature and pressure of fluid should
be maintained at levels that are consistent
with normal operating conditions.
• The ambient temperature should be
maintained at a level that is consistent with
normal operating conditions.
• Please take care to prevent water hammer
and the like from inducing excessive
pressures in pipes and valves. If phenomena
are likely, install a safety valve or take
some other appropriate measure to prevent
pressure from exceeding PS.
• Take appropriate measures at the device or
system level to protect transmitters if they are
to be operated near an external heat source.
2.12 Low Voltage Directive
Applicable standard: EN61010-1
(1) Pollution Degree 2
"Pollution degree" describes the degree to
which a solid, liquid, or gas which deteriorates
dielectric strength or surface resistivity is
adhering. " 2 " applies to normal indoor
atmosphere. Normally, only non-conductive
pollution occurs. Occasionally, however,
temporary conductivity caused by condensation
must be expected.
(2) Installation Category I
"Overvoltage category (Installation category)"
describes a number which defines a transient
overvoltage condition. It implies the regulation
for impulse withstand voltage. " I " applies to
electrical equipment which is supplied from the
circuit when appropriate transient overvoltage
control means (interfaces) are provided.