The table gives some guidance related to the oil-water interface level measurement for a single technology. However, it is important to understand the need for measurement. For some application, several technologies may be used to fix a need which cannot be solved by one technology only.
Interface Level Measurement
The table highlights some use cases but does not supersede the scope and limitation given in this recommended practice.
Table – Interface Measurement Selection Guidance
Note 1: The emulsion layer cannot be measured. The average density between the upper and lower density fluid may represent the emulsion density
Remark: All measurements may be challenged in the presence of dirty fluids (e.g. build‐up). The product often provides build‐up compensation functions.