Smart water meters WP-WR
Woltman Wireless Bulk Water Meter
The flanged Woltman bulk meter, reading itself over radio.
- Communication
- LoRaWAN IN865
- R value (Q3/Q1)
- 160
- Battery life
- 10 years
- IP rating
- IP68
Documents
Overview
Why buyers choose it
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The overnight minimum becomes visible
Daily readings show the night flow, which is where a new leak announces itself long before the monthly total moves.
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No lifting key, no permit
Readings arrive on schedule rather than waiting for a chamber under a carriageway to be opened.
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IP68, because chambers flood
Submersion is normal service for a bulk meter, not an exception to design around.
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Unchanged metrology
The same helical rotor and the same re-verification route as the mechanical Woltman.
In detail
Bulk meters are the ones nobody reads often enough. They sit in chambers under carriageways, they need a lifting key and sometimes a permit, and the interval between readings stretches until the district's water balance is being computed from numbers weeks apart.
This is the flanged Woltman with a wireless register, so the reading arrives on a schedule instead of on a visit. Once a district inlet reports daily, the overnight minimum flow becomes visible — and the minimum flow, not the monthly total, is what tells an operator a new leak has started.
The register is sealed to IP68, which for a bulk meter is a requirement rather than a specification: a chamber under a road floods, and a meter that survives being submerged is the difference between a scheme that keeps working and one that decays a meter at a time.
The measuring element remains the Woltman helical rotor, so the meter's metrology and its re-verification route are unchanged from the mechanical version. It is declared at an R160 turndown, and its built-in battery is rated for at least ten years.
Technical specifications
Metrological
| R value (Q3/Q1) | 160 |
|---|---|
| Register type | Woltman helical rotor with electronic wireless register |
Electrical
| Battery life | 10 years |
|---|---|
| Valve control | No |
| Tamper detection | Yes |
Communication
| Communication | LoRaWAN IN865 |
|---|---|
| Data parameters transmitted | Totalised volume, battery status, sensor fault flags |
Environmental
| IP rating | IP68 |
|---|
Approvals
| Standards | ISO 4064 |
|---|
Parts
Parts of a Woltmann meter
How a meter of this type is built, and what this model is made of.
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Register cover
Caps the register and keeps water and debris off the dial.
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Register
Totalises and displays the water passed.
Register type Woltman helical rotor with electronic wireless register
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Register seal
Seals the register housing against water ingress.
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Chamber cover
Bolted cover giving access to the measuring element inside the body.
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Helical-vane rotor
Spins with the flow along its helical vanes and drives the register through a gear train.
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Body
Flanged cast body that houses the rotor and carries the flow.
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Flange gaskets and bolts
Seal and secure the flanged joints to the pipeline.
Download centre
Everything you need to specify.
Documents for the Woltman Wireless Bulk Water Meter.
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Download PDF (Opens in a new tab)
Technical datasheet
Specifications and dimensions.
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