Fedrel
FM22
Ultrasonic water; DI + fabricated CS, 1.6 MPa, battery 3.6 V, RS485, ±1%, sensor IP68/transmitter IP65; remote/power alternatives optional
Fedrel / Inline ultrasonic water meters
FM10
Ultrasonic water, 1.6 MPa, battery 3.6 V lithium-ion as printed, integral, RS485 Modbus RTU, IP68, ±1%
Connection and size scope: 15/20/25/40/50 mm, brass screwed BSP
MODEL OVERVIEW
What the FM10 offers
- Connection and size scope: 15/20/25/40/50 mm, brass screwed BSP
Manufacturer’s documented description: Fedrel product and price list, effective 20 January 2026, pp. 8, 12, 14. Options and qualifications above are retained as stated.
TECHNICAL DATA
FM10 specifications
| Parameter | Documented value |
|---|---|
| Measuring principle | ultrasonic inlineFedrel product and price list, effective 20 January 2026, 8, 12, 14 |
| Nominal diameter (DN) | 15, 20, 25, 40, 50S17 · 12 |
| Accuracy statement | ±1%; basis not stated in this blockS17 · 12 |
| Connections | BS21 BSP male screwedS17 · 12 |
| Sensor protection | IP68S17 · 12 |
| Power supply | 3.6 V lithium-ion battery as printedS17 · 12 |
| Included outputs | RS485 Modbus RTUS17 · 12 |
| Documented size scope | 15/20/25/40/50 mm, brass screwed BSPFedrel product and price list, effective 20 January 2026, 8, 12, 14 |
| Body material | BrassS17 · 12 |
| Pressure designation | 1.6 MPaS17 · 12 |
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
Sensors compare sound travel in different directions through the water. The difference is used to calculate flow. Inline versions have a defined measuring body.
Installation and commissioning
Before the meter is selected
- Fluid acoustic conditions and bubbles
- Approved Q values and orientation
- Battery-life assumptions and power for outputs
- Forward/reverse total treatment and data availability
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: RS485. 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 Fedrel technical reference → · Browse the source index
Source: Fedrel product and price list, effective 20 January 2026, pp. 8, 12, 14. 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 FM10
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.
Compare related models
Similar technology does not mean equivalent performance. Compare exact configurations.