Water meters VM-R200
R200 Horizontal Volumetric Water Meter
A horizontal piston meter reading to 0.05 litres.
- Nominal size
- DN15 DN20
- Q3 permanent flow
- 2.5 m³/h 4 m³/h
- R value (Q3/Q1)
- 200 200
- Accuracy class
- 2 2
Overview
Why buyers choose it
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Resolves to 0.05 litres
Twenty times finer than a standard volumetric register, which is what makes two consecutive night readings comparable.
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R200 turndown
The slowest registering flow sits lower again, so less passes unmeasured before the leak is found.
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Rated to 50 °C
T50 rather than T30, so it can sit on a warm line without being outside its declaration.
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No straight pipe needed
U0 D0 flow profile sensitivity, so it goes where there is room rather than where there is a run.
In detail
This is the higher-resolution volumetric meter in the range: DN15 and DN20, an R200 turndown, and a register that resolves to 0.05 litres against the 1 litre of the standard volumetric. The dial runs to 99 999 m³.
Resolution and turndown do different jobs, and this meter is specified when both are wanted. The turndown decides the slowest flow that registers at all; the resolution decides how small a change is visible between two readings. Sub-metering that is used to apportion a bill, or a leak investigation that compares consecutive nights, needs the second as much as the first.
It is rated T50, so it takes water to 50 °C rather than the 30 °C of a plain cold meter, and its maximum admissible pressure is 10 bar. Like the rest of the volumetric family it needs no straight pipe either side.
Technical specifications
Selected size: DN15 DN20
Values shown apply to the selected size. A dash means the figure is not stated.
Metrological
| Nominal size | DN15 DN20 |
|---|---|
| R value (Q3/Q1) | 200 |
| Accuracy class | 2 |
| Register type | Rotary piston, dry dial |
| Maximum permissible error, Q1 to Q2 | ±5% |
| Maximum permissible error, Q2 to Q4 | ±3% for water having a temperature >30℃ |
| Indicating range | 99,999 |
| Resolution of indicating device | 0.00005 |
Hydraulic
| Q3 permanent flow | 2.5 m³/h 4 m³/h |
|---|---|
| Q1 minimum flow | 0.0125 m³/h 0.02 m³/h |
| Maximum working pressure | 10 bar |
| Pressure loss class | ΔP63 |
| Q2 transitional flow | 0.02 m³/h 0.032 m³/h |
| Q4 overload flow | 3.125 m³/h 5 m³/h |
| Flow profile sensitivity class | U0 D0 |
Environmental
| Temperature class | T50 |
|---|
Approvals
| Standards | ISO 4064 |
|---|
Dimensions and installation
Length
165 mm
190 mm
Height
115 mm
120 mm
| Connection thread | G3/4" B G1" B |
|---|---|
| Length | 165 mm 190 mm |
| Weight | 1.7 kg 2 kg |
| Height | 115 mm 120 mm |
| Width | 95 mm 100 mm |
Parts
Parts of a volumetric meter
How a meter of this type is built, and what this model is made of.
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Lid
Caps the register and keeps water and debris off the dial.
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Register
Totalises and displays the water passed.
Register type Rotary piston, dry dial
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Register seal
Seals the register housing against water ingress.
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Chamber cover
Bolted cover sealing the piston chamber.
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Rotary piston
Nutating piston that displaces a fixed volume each rotation and drives the register.
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Strainer
Screens out grit and debris before the measuring element.
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Body
Houses the measuring element and carries the flow.
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Tailpieces / connections
Threaded couplings that join the meter to the pipework.
Connection thread G3/4" B G1" B
Download centre
Everything you need to specify.
Documents for the R200 Horizontal Volumetric Water Meter.
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Download PDF (Opens in a new tab) Download PDF (Opens in a new tab)
Technical datasheet
Specifications and dimensions for DN15.
Specifications and dimensions for DN20.
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Download PDF (Opens in a new tab)
All sizes datasheet
Every size in one sheet.
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- Sizes
- DN15–DN50
- Q3 permanent flow
- 1.5 m³/h at DN15