Applications - ABB 2600T Series Operating Instructions Manual

5 Applications

5.1 Steam (condensable vapor) or clean liquids flow
measurement
− Place taps to the side of the line.
− Mount beside or below the taps.
− Mount the drain/vent valve upward.
In case of steam application fill the vertical section of the connecting
lines with a compatible fluid through the dedicated filling tees because
the process fluid must enter the transmitter measuring chambers.
Then:
− Open equalizing valve (C);
− Close low pressure (B) and high pressure (A) valves;
− Open gate valves;
− Slowly open high pressure (A) valve to admit process fluid to both
sides of primary;
− Vent or drain the primary unit and then close the valves;
− Open the (B) valve and close the equalizing valve.
Figure 8: Steam or clean liquid flow measurement
5.2 Gas or liquid (with solids in suspension) flow
measurement
− Place the taps to the top or side of the line.
− Mount the transmitter above the taps.
The process fluid must enter the transmitter primary:
− Open equalizing valve (C),
− Close low pressure (B) and high pressure (A) valves,
− Open gate valves,
− Slowly open high pressure (A) valve to admit process fluid to both
sides of primary,
− Vent or drain the primary unit and then close the valves,
− Open the (B) valve and close the equalizing valve.
Figure 9: Gas or liquid flow measurement
Caution. Manifolds can be supplied both mounted on pressure
transmitters and loose. In case of integral mounting, consider that:
− All adjustments should be carried out by qualified personnel
with the valve without pressure.
− End connections must not be removed from the body.
− Do not use handle wrenches or extensions to operate the
valves.
− Head units must not be removed once installed.
− Do not cover or remove body marking.
Important. The maximum working temperature of the whole assembly
(manifold and instrument) corresponds to the temperature limit of the
pressure transmitter.
Important. When the manifold is assembled to a 2600T pressure
transmitter with NACE compliance A4-50 Stainless Steel bolts (available
on request), please note that the maximum working pressure is limited to
210 bar (3045 psi).
2600T Series Pressure transmitters | SOI/266-XC Rev. I 13
5 Applications