Lehry / Woltman bulk water meters
LIV-WM-WL-002
Woltmann hot to 90°C, 16 bar per sheet
Same serviceable insert
MODEL OVERVIEW
What the LIV-WM-WL-002 offers
- Same serviceable insert
- upper-band hot accuracy ±3%
Manufacturer’s documented description: Lehry DLP, 25 August 2025, pp. 45–46. Options and qualifications above are retained as stated.
TECHNICAL DATA
LIV-WM-WL-002 specifications
| Parameter | Documented value |
|---|---|
| Measuring principle | woltmanLehry DLP, 25 August 2025, 45–46 |
| Nominal diameter (DN) | 50, 65, 80, 100, 125, 150, 200, 250, 300S5 · 45 |
| Accuracy statement | ±5% from Qmin inclusive to Qt exclusive; ±3% from Qt inclusive to Qs exclusiveS30 · 1–2 |
| Fluid temperature | Maximum 90°CS5 · 45 |
| Working pressure and temperature | 16 bar stated in Woltmann sheetS30 · 1–2 |
| Optional outputs | Retrofittable pulse wireS5 · 45 |
| Pulse litres per pulse | List: 100 L/pulse through DN150, 1000 L/pulse above. Confirm installed pickup.S5 · 45 |
| Documented size scope | 50-300 mm, including 125 mmLehry DLP, 25 August 2025, 45–46 |
| Register options | Removable mechanism; magnetic coupling; hermetically sealed dry totalizerS5 · 45 |
| Standards claim | ISO 4064 Class BS5 · 45 |
| Optional accessories | Reed, Hall and Wiegand pickup choices on request; generic 10/100/1000 L/pulse options in sheetS30 · 1–2 |
Published Woltmann flow and length table
Source: Lehry water meter, LIV-WM-WL-001/002 sheet, undated, p.2. Legacy Qs/Qp/Qt/Qmin labels are preserved; these are not relabelled as Q1–Q4. Check the exact cold/hot version and flange drawing.
| DN (mm) | Qs (m³/h) | Qp (m³/h) | Qt (m³/h) | Qmin (m³/h) | Length (mm) |
|---|---|---|---|---|---|
| 50 | 30 | 15 | 3 | 0.45 | 200 |
| 65 | 50 | 25 | 5 | 0.75 | 200 |
| 80 | 80 | 40 | 8 | 1.2 | 225 |
| 100 | 120 | 60 | 12 | 1.8 | 250 |
| 125 | 200 | 100 | 20 | 3 | 250 |
| 150 | 300 | 150 | 30 | 4.5 | 300 |
| 200 | 500 | 250 | 50 | 7.5 | 350 |
| 250 | 800 | 400 | 80 | 12 | 450 |
| 300 | 1200 | 600 | 120 | 18 | 500 |
Lehry Woltmann: dimensions and drilling variants
S30 p.2, undated
Large-size drilling and weight depend on the pressure variant. Confirm the exact cold/hot assembly and approved drawing; these are source-sheet dimensions.
| DN (mm) | Pressure variant (MPa) | Length (mm) | Height (mm) | Flange OD (mm) | PCD (mm) | Bolts | Weight (kg) |
|---|---|---|---|---|---|---|---|
| 50 | 1.0 / 1.6 | 200 | 247 | 165 | 125 | 4 M16 | 12 |
| 65 | 1.0 / 1.6 | 200 | 260 | 185 | 145 | 4 M16 | 13 |
| 80 | 1.0 / 1.6 | 225 | 265 | 200 | 160 | 8 M16 | 15 |
| 100 | 1.0 / 1.6 | 250 | 272 | 220 | 180 | 8 M16 | 19 |
| 125 | 1.0 / 1.6 | 250 | 295 | 250 | 210 | 8 M16 | 23 |
| 150 | 1.0 / 1.6 | 300 | 302 | 285 | 240 | 8 M20 | 30 |
| 200 | 1.0 | 350 | 359 | 340 | 295 | 8 M20 | 42 |
| 200 | 1.6 | 350 | 359 | 340 | 295 | 12 M20 | 42 |
| 250 | 1.0 | 450 | 470 | 395 | 350 | 12 M20 | 94 |
| 250 | 1.6 | 450 | 470 | 405 | 355 | 12 M24 | 94 |
| 300 | 1.0 | 500 | 492 | 445 | 400 | 12 M20 | 97 |
| 300 | 1.6 | 500 | 492 | 460 | 410 | 12 M24 | 114 |
Details to confirm for the offered configuration
These parameters are not established as exact-model values in this record. Some may not apply to this technology.
- Q1 m3 h
- Q2 m3 h
- Q3 m3 h
- Q4 m3 h
- Connections
- Approvals and scope
DUTY & SELECTION
Where to consider this type
Water drives a helical rotor used for larger flows. Many ranges have flanged bodies and removable measuring inserts.
Installation and commissioning
Before the meter is selected
- Overnight flow and continuous/short peak demand
- Rotor-axis and pipe orientation requirements
- Removable insert service clearance
- Flange drilling, head loss and straight pipe
Before the system is handed over
- Confirm the installation drawing, orientation and access for service.
- Match the actual flow range and permitted pressure loss to the project.
- Record meter serial number, start reading and any output scaling.
- Commission communications against the receiving system and retain the test record.
Reading and communication
No electronic output is established for the base record. Confirm a compatible pickup or communication variant if remote reading is required; do not assume another model’s output can be fitted.
Understand pulse, wired and wireless reading ↗Documents and purchase checks
Read the Lehry technical reference → · Browse the source index
Source: Lehry DLP, 25 August 2025, pp. 45–46. Reviewed 2026-09-09.
Ask for these before ordering
- Approved drawing for the exact model, size and configuration
- Serial-number calibration or factory test record
- Applicable approval certificate and exact scope
- Installation manual and required straight pipe
- Protocol/register map and output power requirements
- Option/accessory codes with included components
- Pressure-loss curve, flange drilling and face-to-face length
- Current written commercial and warranty terms
SPECIFY YOUR REQUIREMENT
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