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2600T Series Pressure transmitters | OI/266/WIHART-EN 13
5 Mounting
Figure 4: 266 nameplate with PED data
Local keys below label
PRODUCT CODE
SEAL-H
SEAL-L
SPEC.REQUEST
LRL/URL
SPAN LIMITS
SPAN LIMITS
POWER SUPPLY
OUTPUT SIGNAL
ABB S.p.A.
Made in Italy
TS
PS
SERIAL\NUMBER
SENSOR DIAPH.-FILL
FLANGE/CONN.-GASKET/S
H DIAPH.-FILL
L DIAPH.-FILL
L DIAPH.-FILL
SEAL
HW Rev.
MD:
PED:
MWP/OVP
Important.
In case of a High Static differential pressure transmitter,
please notice that the Vent/Drain valves can be configured only on
the process axis (V1).
the process axis (V1).
5.4.2 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.
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.
5.5 Mounting a DP sensor transmitter
(266DS/266DR)
The pressure transmitter model 266DS can be mounted directly
on the manifold. A mounting bracket for wall or pipe mounting
(2” pipe) is also available as an accessory. For model 266DR
always mounting brackets should be used. Ideally, the pressure
transmitter should be mounted in a vertical position to prevent
subsequent zero shifts.
on the manifold. A mounting bracket for wall or pipe mounting
(2” pipe) is also available as an accessory. For model 266DR
always mounting brackets should be used. Ideally, the pressure
transmitter should be mounted in a vertical position to prevent
subsequent zero shifts.
Important.
If the transmitter is installed inclined with respect to the
vertical, the filling liquid exerts hydrostatic pressure on the
measuring diaphragm, resulting in a zero shift. In such an event, the
zero point can be corrected via the zero push-button or via the “set
PV to zero” command. Please refer to the [configuration section] for
further details. For transmitters without diaphragm seals, please
read the following considerations on the Vent/Drain.
measuring diaphragm, resulting in a zero shift. In such an event, the
zero point can be corrected via the zero push-button or via the “set
PV to zero” command. Please refer to the [configuration section] for
further details. For transmitters without diaphragm seals, please
read the following considerations on the Vent/Drain.
Attention − Potential damage to transmitter.
In case of a High
Static differential pressure transmitter (266DSH.x.H) please always
open the equalization valve of the manifold (if installed) before
applying pressure to the transmitter. High Static pressure can
damage the sensor causing a zero shift and a serious decrease of
the total performance in terms of accuracy. In this case, please
perform a full sensor trim.
open the equalization valve of the manifold (if installed) before
applying pressure to the transmitter. High Static pressure can
damage the sensor causing a zero shift and a serious decrease of
the total performance in terms of accuracy. In this case, please
perform a full sensor trim.
It is important to mount the transmitter and to lay the process
Figure 5: Drain/vent valves configuration (respectively V1, V2, V3)
5.4 Pressure Equipment Directive (PED) (97/23/CE)
5.4.1 Devices with PS >200
Devices with a permissible pressure PS >200 bar have been
subject to a conformity validation. The data label includes the
following specifications:
subject to a conformity validation. The data label includes the
following specifications:
piping so that gas bubbles, when measuring liquids, or
condensate when measuring gases, will flow back to the
process and not enter the transmitter measuring chamber.
Optional Vent/drain valves (code V1/V2/V3) on the transmitter
are located on the sensor flanges.
condensate when measuring gases, will flow back to the
process and not enter the transmitter measuring chamber.
Optional Vent/drain valves (code V1/V2/V3) on the transmitter
are located on the sensor flanges.
The transmitter has to be positioned so that these drain/vent
valves will be located higher than the taps on liquid service in
order to allow the venting of entrapped gas or below the taps
on gas service in order to allow the air to vent off or
condensate to drain off. For safety reasons, take care of the
drain/vent valves position so that when the process fluid is
removed during the drain/vent operation it is directed down
and away from technicians. It is recommended to mount the
transmitter to prevent this possible source of damage for
unskilled operators.
valves will be located higher than the taps on liquid service in
order to allow the venting of entrapped gas or below the taps
on gas service in order to allow the air to vent off or
condensate to drain off. For safety reasons, take care of the
drain/vent valves position so that when the process fluid is
removed during the drain/vent operation it is directed down
and away from technicians. It is recommended to mount the
transmitter to prevent this possible source of damage for
unskilled operators.