ABB 2600T Série Mode D'emploi page 6

3.4 Pressure Equipment Directive (PED) (97/23/CE)
3.4.1 Devices with PS >200 bar
Devices with a permissible pressure PS >200 bar have been subject
to a conformity validation. The data label includes the following
specifications:
ABB S.p.A. SERIAL\NUMBER
Made in Italy
PRODUCT CODE
SEAL-H
SPEC.REQUEST
SENSOR DIAPH.-FILL
FLANGE/CONN.-GASKET/S
H DIAPH.-FILL
L DIAPH.-FILL
POWER SUPPLY
TS
MWP/OVP
LRL/URL
SPAN LIMITS
Local keys below label
Figure 2: 266 nameplate with PED data
3.4.2 Devices with PS <200 bar
Devices with a permissible pressure PS <200 bar correspond to article
3 paragraph (3). They have not been subject to a conformity
validation. These instruments were designed and manufactured acc.
to SEP Sound Engineering Practices.
3.5 Transmitter housing rotation
To improve field access to the wiring or the visibility of the optional
LCD meter, the transmitter housing may be rotated through 360° and
fixed in any position. A stop prevents the housing from being turned
too far.
In order to proceed with housing rotation, the housing stop tang-
screw has to be unscrewed by approximately 1 rotation (do not pull it
out) and, once the desired position has been reached, retightened.
Figure 3: Housing rotation
3.6 Integral display rotation
In case an optional integral display meter is installed, it is possible to
mount the display in four different positions rotated clockwise or
counterclockwise with 90° steps.
6 SOI/266-XC Rev. J | 2600T Series Pressure transmitters
SEAL-L
HW Rev.
MD:
PED:
OUTPUT SIGNAL
PS
To rotate the LCD, simply open the windowed cover (Hazardous area
prescriptions must be respected), pull-out the display housing from
the communication board. Reposition the LCD connector according
to the new desired position. Push back the LCD module on the
communication board. Be sure that the 4 plastic fixing locks are
properly in place.
Figure 4: LCD rotation
3.7 Impulse piping connection for standard
instruments
In order for the pipes to be laid correctly, the following points must be
observed:
− The measuring pipes must be as short as possible and free from
sharp bends.
− Lay the impulse piping in such a way that no deposits can
accumulate in them. Gradients should not be less than approx.
8% (ascending or descending).
− The measuring pipes should be blown through with com pressed
air or, better yet, flushed through with the measuring medium
before connection.
− Where a fluid/vaporous measuring medium is being used, the
liquid in both measuring pipes must be at the same level. If a
separating liquid is being used, both measuring pipes must be
filled to the same level (266Dx and 266Mx).
− Although it is not absolutely necessary to use balancing vessels
with vaporous measuring media, measures must be taken to
prevent steam entering the measuring chambers of the
measuring equipment (266Dx and 266Mx).
− It may be necessary to use condensate vessels, etc., with small
spans and vaporous measuring media (266Dx and 266Mx).
− If using condensate vessels (steam measurement), you should
ensure that the vessels are at the same elevation in the differential
pressure piping (266Dx and 266Mx).
− As far as possible, keep both impulse lines at the same
temperature (266Dx and 266Mx).
− Completely depressurize the impulse lines if the medium is a fluid.
− Lay the impulse lines in such a way that gas bubbles (when
measuring fluids) or condensate (when measuring gases) can
flow back into the process line.
− Ensure that the impulse lines are connected correctly (High and
Low pressure sides connected to measuring equipment, seals,
etc.).
− Make sure the connection is tight.
− Lay the impulse line in such a way that prevents the medium from
being blown out over the measuring equipment.
3 Installation