Condensate pots often show up in steam flow measurement applications with differential pressure (DP) or multivariable transmitters. Today we have other technologies to eliminate this type of installation. Vortex steam flow meters can work, although they are limited by the size of the pipe, and Annubars or orifice plates can handle even high temperatures.
Condensate pots for steam flow measurement
Let’s look at the reasons you might need condensate pots in steam applications. Sometimes you can have accuracy problems with your impulse lines. A condensate pot can ameliorate those. Also, high temperatures can damage your sensor. Finally, you can avoid flashing in the impulse lines, which happens during abrupt temperature changes.
If you have to install condensate pots, take care to do so correctly, or you might as well not bother.
Installing condensate pots
- Connect the condensate pots to the high pressure (HP) and low pressure (LP) impulse lines of the transmitter.
- Install the pots horizontally, although some vendors say you can install vertically too.
- Make sure you install both at the same level to avoid affecting meter performance.
- DP or multivariable flow meters must go below the condensate pots and steam pipe.
- Make sure you have the same impulse-line length for the high and low pressure.
- The condensate pots should have the same level of filled liquid, preferably an anti-freezing product like glycol instead of water.
- Consider installing your manifold vertically, although again, some vendors say horizontally can work too.
To know more about steam flow measurement, please ask our engineers!