What drives the selection
Wide difference between overnight and peak flow; acceptable pressure loss; maintenance access
Candidate technologies
Woltman, compound, inline ultrasonic, electromagnetic. Each is a starting point requiring exact-model validation.
Woltman bulk water meters
Overnight flow and continuous/short peak demand. Rotor-axis and pipe orientation requirements.
CandidateCompound water meters
Full flow profile including overnight demand. Changeover/crossover accuracy.
CandidateInline ultrasonic water meters
Fluid acoustic conditions and bubbles. Approved Q values and orientation.
CandidateElectromagnetic flow meters
Lowest measured conductivity. Liner, electrode and seal compatibility.
Information to send with your enquiry
- Minimum, normal, continuous maximum and peak flow, including duration
- Wide difference between overnight and peak flow; acceptable pressure loss; maintenance access
- Connection, orientation, pressure, temperature and available straight pipe
- Power, data/reporting requirements, delivery pin code and quantity
What would rule a candidate out?
Check fluid incompatibility, an unsupported flow band, excessive pressure loss, unsuitable filling/orientation, missing power and an unproven approval or data interface. Resolve these before selecting by price.

