These meters repeatedly measure a defined volume in a chamber. A rotary piston or wobbling disc translates those cycles into accumulated volume. Nutating-disc construction is described by [Badger Meter](https://www.badgermeter.com/products/meters/nutating-disc/).
MEASURING PRINCIPLE / MECHANICALFIG. 01
Principle schematic · not a product drawing or installation detail
Advantages: a useful candidate where accurately capturing small, intermittent clean-water use is important.
Limitations: fine clearances and moving parts make water quality and allowable pressure loss important selection questions. Sand or deposits may interfere with operation.
Before buying: obtain the low-flow performance, pressure-loss curve and debris/filtration guidance. “Volumetric” describes the measuring approach, not immunity to wear or incorrect installation.
What to specify for this type
Low-flow requirement and pressure-loss curve
Particles, cleaning and filtration
Orientation and any integrated NRV
Approved flow range and temperature
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.
Does this type determine the final model and size?
No. Validate the fluid, flow range, pressure, temperature, orientation and acceptance requirements against the exact offered configuration.
Which accessories are included?
Only the written quotation can establish the supplied scope. Ask for the option code, pickup/module, power supply, gateway and required installation accessories.
Ready to discuss your requirement?
Send a model code, BOQ or a brief description of your application. Add technical details if you have them.
