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FM125F-SZ
FM125F-SZ - Belimo Flow sensor, AC/DC 24 V, DN 125, FS 37.5 l/s
£943.32
£786.10
On request
Next Supplier Stock Update: 18/04/2026
Manuals & Datasheets
| DATA-SHEET |
 |
| Product type | Sensors & Stats |
| IP rating | IP54 |
| Manufacturer | Belimo |
| Power Supply | 24Vac/Vdc |
| Sensor Type | Flow Volume Sensor |
Explore all the components for your ventilation system at IACS. All Belimo Flow Sensors in stock are ready for delivery with either Free or 1-2 Days Delivery.
The Belimo FM125F-SZ is a Sensor used in HVAC applications to track Flow.
With its resistance to magnetite and dirt, this Sensor can be used in closed systems with both cold and warm water.
Find the best-priced Belimo part that is compatible with your system at IACS.
If you have questions about size or installation, consult the Belimo custom datasheet above or send an email to IACS to get personal ised guidance.
Description Show / Hide EditorInsert Image...| Electrical data | Nominal voltage | AC/DC 24 V |
| Nominal voltage frequency | 50/60 Hz | |
| Nominal voltage range | AC 19.2...28.8 V / DC 21.6...28.8 V | |
| Power consumption AC | 1 VA | |
| Power consumption DC | 0.5 W | |
| Connection supply | Cable 1 m, 3 x 0.75 mm² | |
| Functional data | Application | Water |
| Voltage output | 1x 0...10 V, max. load 1 mA | |
| Pipe connection | Flange PN 16 according to EN 1092-2 | |
| Installation position | upright to horizontal | |
| Servicing | maintenance-free | |
| Measuring data | Measured values | Flow |
| Measuring fluid | Water and water glycol mixtures | |
| Measuring principle | Ultrasonic volumetric flow measurement | |
| Measuring accuracy flow | ±2% of the measured value (20...100% FS) @ 20°C / Glycol 0% vol. ±0.4% of FS (0...20% FS) @ 20°C / Glycol 0% vol. |
|
| Measuring accuracy flow note | ±6% of the measured value (20...100% FS) @ -20...120°C / Glycol 0...50% vol. ±1.2% of FS (0...20% FS) @ -20...120°C / Glycol 0...50% vol |
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| Flow Measurement Repeatability | ±0.5% | |
| Min. flow measurement | 1% of FS | |
| Materials | Flow measuring pipe | EN-GJL-250 (GG 25), with protective paint |
| Safety data | Ambient humidity | Max. 95% RH, non-condensing |
| Ambient temperature | 30...50°C [-22...122°F] | |
| Fluid temperature | -20...120°C [-5...250°F] | |
| Storage temperature | -40...80°C [-40...176°F] | |
| Protection class IEC/EN | III, Safety Extra-Low Voltage (SELV) | |
| Power source UL | Class 2 Supply | |
| Certification IEC/EN | IEC/EN 60730-1:11 and IEC/EN 60730-2-15:10 | |
| Degree of protection IEC/EN | IP54 | |
| Degree of protection NEMA/UL | NEMA 2 | |
| Enclosure | UL Enclosure Type 2 | |
| EMC | CE according to 2014/30/EU | |
| Quality Standard | ISO 9001 | |
| Mode of operation | Type 1 | |
| Pollution degree | 3 | |
| Rated impulse voltage supply | 0.8 kV |
FM150F-SZ
Ultrasonic Flow Meter
DN 150
Output signal active volumetric flow 54.0
0.5...10 V
Mode of operation
The ultrasonic flow sensor is equipped with a flow pipe, four flow transmitters and an electronic circuit. A temperature sensor is mounted in the flow pipe to compensate the temperature effects. A sensor error occurs when the ultrasonic path is interrupted (air bubbles in the system, connection to ultrasonic transducers interrupted).
