Consider a level measurement at a properly designed flume or weir, an area–velocity system, or a specialist partly filled pipe meter. The measurement must account for the actual wetted area and the relevant hydraulic conditions. Channel geometry, sediment, backwater and sensor location become part of the selection. Pulsar open-channel and area–velocity systems
A level sensor alone does not generally determine flow in an arbitrary drain. It needs a valid hydraulic relationship or complementary velocity measurement.
What to specify for this type
- Channel section and changing wetted area
- Sediment, backwater and reverse flow
- Level/velocity or flume/weir hydraulic relationship
- Cleaning and access for sensor maintenance
Flow range and communications
Match actual minimum, normal, continuous maximum and peak flow to the exact configuration. A shared pipe size does not establish equivalent performance.
A connected metering system is five parts: meter → interface or module → network or gateway → software → billing, dashboard or control system. A quotation should name who supplies and maintains each one. AMR-ready equipment may still require separately quoted radio, gateway, head-end and billing software.
Read the detailed measuring-principle guide · Understand sizing and accuracy · Compare communication options