Installation - ABB 2600T Série Mode D'emploi

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.
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 detailed classifications
INTRINSIC SAFETY/CHINA
— NEPSI approval Ex ia IIC T4-T6
FLAMEPROOF/CHINA
— NEPSI approval Ex d IIC T6
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.
2600T Series Pressure transmitters | SOI/266-XC Rev. J 5
3 Installation