B1 And B2 Barrel Housing Bracket Details; Transmitter Housing Rotation; Impulse Piping Connection For Standard Instruments - ABB 266HSH Operating Instructions Manual

5.5.1 B1 and B2 Barrel housing bracket details

5
4
2
1 – U-bolt
2 – U-bolt fixing washers and nuts
3 – Transmitter fixing bolts
4 – B1 or B2 bracket
5 – Fitting adapter (supplied with 266HSH)
Figure 9: Pipe and wall mounting bracket kits for P style
transmitter with Barrel housing

5.6 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.
3
1
5.7 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
accumulate in them. Gradients should not be less than
approx. 8% (ascending or descending).
— The measuring pipes should be blown through with
compressed air or, better yet, flushed through with the
measuring medium before connection.
— 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
— 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.
Caution. Process leaks may cause harm or result in death. Install
and tighten process connectors and all accessories (including
manifolds) before applying pressure. In case of toxic or otherwise
dangerous process fluid, take any precautions as recommended in
the relevant Material Safety Data Sheet when draining or venting.
Use only a 12 mm (15/32") hexagonal spanner to tighten the
bracket bolts.
2600T Series Pressure transmitters | OI/266/LowP-EN Rev.A 13
5 Mounting