AMETEK Drexelbrook RF interface transmitters, available from Measurement Solutions , provide desalter interface measurement for all electrostatic separators.
The AMETEK Drexelbrook RF interface transmitters have the following benefits:
- Maximise throughput
- Reduce water content in crude oil
- Reduce maintenance costs
- No moving parts
- Measure close to the grids
- Measurement independent of density, temperature and pressure changes
- Maximise throughput of oil/water separators with reliable, no maintenance, level transmitters
A typical separator contains four phases. Oil on the top (electrically insulating), water and sediment at the bottom (electrically conductive), and a two-part emulsion phase in-between. The upper part of the emulsion phase consists of wet oil (water particles surrounded by oil, which is electrically insulating). The lower part is oily water (oil particles surrounded by water, which is electrically conducting.) There is an electrical interface in the emulsion where the wet oil meets the oily water.
The electrostatic field operates at maximum efficiency when this electrical interface is close to the electrostatic grid. If this electrical interface is far away from the grids, coalescing efficiency is reduced. If it touches the grid, it draws huge current.
AMETEK Drexelbrook RF interface transmitters accurately measure the electrical interface in the emulsion in upset conditions also. The RF interface transmitters allow operators to keep this electrical interface close (not too close) to the grids, to maximise throughput.
The AMETEK Drexelbrook instrument also ignores build-up on the sensing element and is unaffected by density changes. It is also applicable for thermoelectric treaters and other electrostatic coalescers.