SANT / Woltman bulk water meters
WM11
CI pulse meter; 50-300 mm, no 125 mm price row
Class-B, 45°C, 10 L/pulse to 65 mm
MODEL OVERVIEW
What the WM11 offers
- Class-B, 45°C, 10 L/pulse to 65 mm
- 100/1000 L/pulse from 80 mm
- PN16 drilling, test values 1.5/1.0 MPa
Manufacturer’s documented description: SANT retail price list, August 2026, pp. 63–66. Options and qualifications above are retained as stated.
TECHNICAL DATA
WM11 specifications
| Parameter | Documented value |
|---|---|
| Measuring principle | woltmanSANT retail price list, August 2026, 63–66 |
| Nominal diameter (DN) | 50, 65, 80, 100, 150, 200, 250, 300S20 · 65 |
| Fluid temperature | Maximum 45°C in retail listS20 · 65 |
| Connections | DIN2533 RF PN16 drillingS20 · 65 |
| Included outputs | PulseS20 · 65 |
| Pulse litres per pulse | 10 L/pulse through DN65; 100/1000 L/pulse from DN80, select exact constantS20 · 65 |
| Body material | Cast ironS20 · 65 |
| Standards claim | ISO4064 Class BS20 · 65 |
| Body test pressure | 1.5 MPa hydraulicS20 · 65 |
| Seat test pressure | 1.0 MPa as printed; not asserted as working pressureS20 · 65 |
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
- Working pressure and temperature
- 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
Documentation mentions: Pulse output. These may be optional or specific to a variant.
Discovery tags come from the documented description, including optional capabilities. Confirm inclusion and exact size/configuration.
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.
Understand pulse, wired and wireless reading ↗Documents and purchase checks
Read the SANT technical reference → · Browse the source index
Source: SANT retail price list, August 2026, pp. 63–66. 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
Get a quotation for WM11
Tell us the size and quantity you need. Add the fluid, flow or output requirement if known. You can review and send the enquiry from your email app on the next page.
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