Billing network & Custody transfer

Flow monitoring to actually measure and bill based on actual flows put into agencies/utilities system

Customer

Water utility managing sewage networks and wastewater treatment plants where sewage water from different cities/villages are processed (custody transfer)
Network equipped with level only flow measurement solution (based on Manning equation)

Task definition

Need for precise and reliable measurements of the actual wastewater flow
Currently installed instrumentation is not providing accurate flow values: e.g. same type of measuring devices installed at the same channel (without inflow nor discharge) bringing huge flow differences
Objective: obtain correct wastewater flow values for billing
Partly filled circular pipe (DN800)
No flow shutdown possible, fragile pipe liner (no drilling possible)

Solution

Installation of a RAVEN-EYE^® non-contact radar flowmeter combined with an ultrasonic level sensor (ULS-06)
Both sensors are combined to a PLC remotely connected (GPRS) to the SCADA system of the utility