Installation - ABB 2600T-Serie Bedienungsanleitung

3 Installation

3.1 General
Warning.
For installation in Hazardous Areas, i.e. areas with dangerous
concentrations of e.g. gases or dusts that may explode if ignited,
the installation must be carried out in accordance with relative
standards either EN 60079-14 and/or with local authority
regulations, for the relevant type of protection adopted.
In order to ensure operator safety and plant safety it is essential
that installation is carried out by suitably trained personnel
according to the technical data provided in the specification for
the relevant model. To find out the "Operative limits" please refer
to the dedicated chapter of the instruction manual and datasheets.
The transmitter should not be installed where it may be subjected
to mechanical and thermal stresses or where it may be attached
by existing or foreseeable aggressive substances. ABB cannot
guarantee that a construction material is suited to a particular
process fluid under all possible process conditions. Fill fluids and
wet parts materials selection is under user's full responsibility
Caution. Proper location of the transmitter with respect to the
process pipe will depend upon the service for which the instrument
is used. Care should be exercised to identify correct process
connections.
Important. In differential pressure transmitters the high side is
marked with "H" or "+" and low side with "L" or "–".
Before mounting the transmitter, check whether the model meets the
measurement and safety requirements of the measuring point, e.g.,
with regard to materials, pressure rating, temperature, explosion
protection and operating voltage. The relevant recommendations,
regulations, standards and the rules for prevention of accidents must
also be observed!
Measurement accuracy is largely dependent upon correct
installation of the transmitter and the related measurement
piping. The measuring set-up should be screened as much as
possible from critical ambient conditions such as major
temperature variations, vibration and shock. For example, if
ambient conditions may change considerably as a result of
locating the transmitter near a building structure, this may
influence the measurement quality!
3.2 Transmitter
The transmitter can be flanged directly to the shut-off valve. A
mounting bracket for wall or pipe mounting (2" pipe) available
as an accessory. Mount the transmitter in such a way that the
process flange axes are vertical (horizontal in case of
barrel-type aluminum housing) in order to avoid zero shifts.
If the transmitter is installed at an incline, the hydrostatic
pressure of the filling fluid would exert pressure on the
measuring diaphragm and thus cause a zero shift! A zero point
correction would then be necessary. Pressure transmitters can
be mounted in any position. Seal unconnected process
connections on the sensor with the enclosed screw plugs
(1/4-18 NPT). For this purpose, use your officially approved
sealing material.
6 SOI/266-XC Rev. D | 2600T Series Pressure transmitters
3.3 Hazardous area considerations
The transmitter must be installed in hazardous area only if it is
properly certified. The certification plate is permanently fixed on
the neck of the transmitter top housing.
The 266 Pressure Transmitter Line can have the following
certifications:
ATEX INTRINSIC SAFETY
— II 1 G Ex ia IIC T4/T5/T6 and II 1/2 G Ex ia IIC T4/T5/T6
— II 1 D Ex iaD 20 T85°C and II 1/2 D Ex iaD 21 T85°C
ATEX EXPLOSION PROOF
— II 1/2 G Ex d IIC T6 and II 1/2 D Ex tD A21 IP67 T85°C
ATEX TYPE "N" / EUROPE:
— II 3 G Ex nL IIC T4/T5/T6 and II 3 D Ex tD A22 IP67 T85°C
.
COMBINED ATEX, ATEX FM and FM Canada
— See detailed classifications
FM Approvals US and FM Approvals Canada:
— Explosionproof (US): Class I, Div. 1, Groups A, B, C, D
— Explosionproof (Canada): Class I, Div. 1, Groups B, C, D
— Dust ignitionproof: Class II, Div. 1, Groups E, F, G
— Nonincendive: Class I, Div. 2, Groups A, B, C, D
— Intrinsically safe: Class I, II, III, Div. 1, Groups A, B, C, D,
E, F, G
— Class I, Zone 0, AEx ia IIC T6/T4 (FM US)
— Class I, Zone 0, Ex ia IIC T6/T4 (FM Canada)
IEC (Ex):
— See ATEX detailed classifications
INTRINSIC SAFETY/CHINA
— NEPSI approval
FLAMEPROOF/CHINA
— NEPSI approval
GOST (Russia), GOST (Kazakistan), Inmetro (Brazil)
— based on ATEX.
Warning. Explosion-proof transmitters must be either reapired by
the manufacturer or approved by a certified expert following repair
work. Observe the relevant safety precautions before, during and
after repair work.
3 Installation
Ex ia IIC T4-T6
Ex d IIC T6