ABB 2600T-Serie Bedienungsanleitung Seite 7

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.
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.
SERIAL\NUMBER
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.
2600T Series Pressure transmitters | SOI/266-XC Rev. D 7
3 Installation