Pressure Equipment Directive (Ped) (2014/68/Ue); Devices With Ps >200; Devices With Ps ≤200 Bar; Mounting A Differential Pressure Sensor Transmitter - ABB 2600T Series Operating Instructions Manual

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:
Figure 5: 266 nameplate with PED data
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.
5.5 Mounting a Differential
Pressure sensor transmitter
(266DS/266MS/266PS/266DR/266PR/266MR)
The pressure transmitter models 266DS, 266MS and 266PS
can be mounted directly on the manifold. A mounting bracket
for wall or pipe mounting (2" pipe) is also available as an
accessory. For models 266DR, 266PR and 266MR 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.
Attention − Potential damage to transmitter.
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.
14 OI/266/PB-EN Rev. E | 2600T Series Pressure transmitters
It is important to mount the transmitter and to lay the process
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. 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.
Figure 6: Drain/vent valves configuration (respectively V1, V2, V3)
Important.
particularly useful information. It does not indicate a dangerous or
damaging situation.
Important.
please notice that the Vent/Drain valves can be configured only on
the process axis (V1).
In case of a High
This message indicates indicates operator tips or
In case of a High Static differential pressure transmitter,
5 Mounting