Yokogawa RotaMASS 3-Series - Manual (Page 222)

10. pEd (prESSUrE EqUIpMENT dIrECTIvE)
10-4 IM 01R04B04-00E-E 8th edition March 01, 2011 -00 All Rights Reserved. Copyright © 2003, Rota Yokogawa
Information of potential hazardous situations:
Endangering by: Description Remarks
Surface temperature Surface temperature is hot in case of
high process temperature. It is the
sole responsibility of the user to
establish proper means to prevent
touching of the detector (see also
chapter 11.1).
Max. / Min process temperature See chapter 11.1
Max. process pressure See chapter 11.1
Tightness of the wetted, PED relevant
volume
A factory test is done before delivery
Corrosion and erosion effects It is the sole responsibility of the
user to select proper wetted
materials for the medium intended
to use (see chapter 10).
Life time evaluation Experience shows that the lifetime of
the detector within the allowed
operation conditions is more than 10
years.
Without erosion and corrosion.
Temperature shock Permanent temperature cycles of
more than 100°C temp. difference
have to be avoided. Tube failure can
occur because of material wearing.
Medium
Instable fluids If instable fluids are transported it is
the sole responsibility of the user
that in case of decomposition the
design limits are not exceeded.
Process pressure/temp. relation See chapter 10
Piping and support forces See chapter 4.3
Choice of gaskets and pre- stress of the
process connections
It is the sole responsibility of the
user to select suitable gaskets and
to screw the process connections
with the necessary torques.
Refer to EN 1591-1
Use of closing and openings Do not open the ¼ NPT plugs in the
body after tube failure before it is
ensured that the housing is pressure
free and free of hazardous
substances.
Pressure shock, water hammer and
pressure surges
Dynamical exceeding of the given
max. pressure at process temp. has
to be avoided.
Water hammer can lead to tube
failures.
Filling and emptying of the pipe work The detector is part of a pipe work. It
has to be taken into account that
fluid can remain in the measuring
tubes.
Disposal, cleaning and return See chapter 1.5
Flow direction of the unit See chapter 4.1 and marking on the
detector.
After installation with wrong flow
direction only indication error
(wrong sign, can be corrected via
software)
Installation position of the unit See chapter 4.3 A wrong installation position gives
only measuring disturbances
Installation
Pipe stress by weight of the instrument See chapter 4.3
Permitted ambient conditions
(temperature, humidity)
See chapter 11.1
External fire External fire can result in
- Rise in pressure by temperature
- Damage of gaskets
It is in the sole responsibility of the
user to implement suitable means to
prevent large damage in the case of
fire.
The instrument itself does not
contain flammable materials. Outer
influence
Earthquake resistance Damage of the mounting screws Check by user
T101.EPS