Skip to content
Metrys The Metrys wordmark, set in a high-contrast swash serif.
A Metrys R160 Woltmann bulk water meter with a flanged dark blue body and a grey pulse-ready register.
A Metrys R160 Woltmann bulk water meter seen end-on, with the lid open over the register and a DN50 number plate on the flange.
A Metrys R160 Woltmann bulk water meter with a grey communication module fitted over the register, on a flanged dark blue body.
Woltmann bulk water meter, drawn illustration

100%
A Metrys R160 Woltmann bulk water meter with a flanged dark blue body and a grey pulse-ready register.
A Metrys R160 Woltmann bulk water meter seen end-on, with the lid open over the register and a DN50 number plate on the flange.
A Metrys R160 Woltmann bulk water meter with a grey communication module fitted over the register, on a flanged dark blue body.
Woltmann bulk water meter, drawn illustration

Double-click or use + and − to zoom; drag to move around.

Water meters WP-R160-P

R160 Woltman Water Meter, Pulse-Ready

The R160 Woltman, supplied ready for a pulse sender.

Nominal size
DN100
Q3 permanent flow
160 m³/h
R value (Q3/Q1)
160
Accuracy class
2

Select nominal size (DN)

Specifications update with the selected size.

DN50 2″ DN65 2½″ DN80 3″ DN100 4″ DN125 5″ DN150 6″ DN200 8″

Documents

Download datasheet (Opens in a new tab)

Overview

Why buyers choose it

  • Telemetry without a shutdown

    The sensor is already fitted, so adding remote reading later is a clip-on job rather than cutting a DN200 meter out of the line.

  • Inductive, not magnetic

    Counts come from an inductive pickup, so a magnet held against the body does not add volume to the register.

  • R160 turndown

    Accuracy holds from Q3/160 upward, which is where a district line's overnight flow sits.

  • Sealed to IP68

    The register is hermetically sealed and still readable after a chamber has flooded.

In detail

This is the flanged R160 Woltman built with the inductive sensor already fitted, so the meter leaves the factory ready to be read remotely. Mechanically it is the same meter as the standard R160: DN50 to DN200, permanent flow 40 to 630 m³/h, class 2 accuracy across an R160 turndown.

The difference is what happens eighteen months after commissioning. Retrofitting a pulse sender to a plain mechanical meter usually means taking the meter out of the line, and on a DN200 bulk connection that is a shutdown, a crane and a permit. A pre-equipped register accepts the sender as a clip-on part, so a district that is metered today can be telemetered later without touching the pipework.

The sensor is inductive rather than magnetic, so an external magnet held against the body does not generate counts. The register itself stays hermetically sealed to IP68 and still rotates through 360° for reading from the chamber's access side.

Technical specifications

Selected size: DN100

Values shown apply to the selected size. A dash means the figure is not stated.

Metrological

Nominal size DN100
R value (Q3/Q1) 160
Accuracy class 2
Register type Dry dial, hermetically sealed to IP68, pulse-ready
Maximum permissible error, Q1 to Q2 ±5%
Maximum permissible error, Q2 to Q4 ±2% for water having a temperature ≤30℃; ±3% for water having a temperature >30℃
Indicating range 999,999
Resolution of indicating device 0.0005

Hydraulic

Q3 permanent flow 160 m³/h
Q1 minimum flow 1 m³/h
Maximum working pressure 16 bar
Pressure loss class ΔP40
Q2 transitional flow 1.6 m³/h
Q4 overload flow 200 m³/h
Flow profile sensitivity class U10 D5

Environmental

Temperature class T30 and T50

Approvals

Standards ISO 4064

Dimensions and installation

Length 250 mm Height 245 mm
Schematic, not to scale
Connection thread Flange
Length 250 mm
Weight 16.8 kg
Orientation limitation Yes
Height 245 mm
Width 200 mm
Flange outside diameter 215 mm
Bolt circle diameter 180 mm
Connecting bolts 8 × M16

Parts

Parts of a Woltmann meter

How a meter of this type is built, and what this model is made of.

Parts of a Woltmann meter, drawn illustration Exploded illustration of a Woltmann bulk water meter's parts, numbered top to bottom: 1 register cover, 2 register, 3 register seal, 4 chamber cover, 5 helical-vane rotor, 6 body, 7 flange gaskets and bolts. 1 2 3 4 5 6 7
Illustrative: how a meter of this type is built. This model's own materials and figures are in the table and its specifications.

  1. Register cover

    Caps the register and keeps water and debris off the dial.

  2. Register

    Totalises and displays the water passed.

    Register type Dry dial, hermetically sealed to IP68, pulse-ready

  3. Register seal

    Seals the register housing against water ingress.

  4. Chamber cover

    Bolted cover giving access to the measuring element inside the body.

  5. Helical-vane rotor

    Spins with the flow along its helical vanes and drives the register through a gear train.

  6. Body

    Flanged cast body that houses the rotor and carries the flow.

  7. Flange gaskets and bolts

    Seal and secure the flanged joints to the pipeline.

Download centre

Everything you need to specify.

Documents for the R160 Woltman Water Meter, Pulse-Ready.

Approvals and certificates

More from Water meters

View all Water meters

Ready to get started?

Tell us about your scheme, society or plant.

Our team will help you find the right solution for your water needs.

Chat on WhatsApp

Compare