FHKU Series Digmesa Flow Sensor

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The FHKU Series is a compact inline flow sensor engineered for low-viscosity liquids. Designed for easy integration into beverage systems, water filtration units, chemical dosing setups, and industrial filtration lines, it delivers accurate volumetric measurement with a pulse output. Its small footprint and consistent performance make it ideal for both continuous and batch process applications.

The FHK and FHKU can be supplied as stand-alone units with an LCD display integrated into their upper part, or provided remotely via a cable. This device is ideal for applications such as checking for compliance with maintenance cycles in water filters with many functions, such as count-down, count-up, display of instantaneous flow rate, timed control, and data storage.

For samples, please see the manufacturer's page: https://shop.digmesa.com/en/

FHKU Specifications

Measurement: liquid flow
Applications: Non-alcoholic beverage, water filter monitoring, alcoholic beverage, chemical, water, wine, & other low viscosity liquids
Flow ranges (L/min): 0.04-0.60, 0.05-0.80, 0.10-2.40, 0.15-3.80, 1.40-18.0, 3.00-30.0
Max pressure (bar): 20
Housing: PBT (Arnite), PPS (Ryton), or PVDF
Signal: NPN open collector frequency (pulse) output (0VDC signal)

Highly adaptable for continuous or batch processing across food, beverage, water, chemical, and industrial sectors
Compact footprint with opposing ports for neat installations
Durable materials resist corrosion, even with aggressive liquids
Plug-and-play compatibility with John Guest 3/8” push-fit fittings
High precision with ±2% accuracy and <±0.25% repeatability

For complete specifications and certifications, please refer to the Product Overview Sheet.

Nozzle (mm)	Pulse/Liter	Min Flow (L/min)	Max Flow (L/min)	Pressure Loss (bar)
1.0	2,063	0.041	0.56	1.0
1.2	1,700	0.050	0.82	1.0
2.0	988	0.091	2.40	1.0
2.5	760	0.150	3.74	1.0
3.0	565	0.102	5.63	1.0
4.0	381	0.123	8.38	0.8
5.6	236	0.308	9.26	0.5

Component	Material Options	Notes
Housing	PBT, PPS, or PA (fiberglass reinforced), PVDF	Chemical and temperature resistant
Nozzles	PPS, Inox 1.4305, or housing material	Based on diameter
Turbines	PVDF with embedded magnets	Wetted magnets or sealed options available
O-rings	MVQ (Silicone), Viton, EPDM, Kalrez	Choose based on chemical/media compatibility
Bearing Pin	Inox 1.4305 or 1.4571, PCTFE	Ceramic options for high-wear applications

Tube Size	Pressure (Bar)	Temperature (°C)
5/32"–5/16" (4–5 mm)	Up to 16	–20 °C to +65 °C
1/4"–1/2" (6–22 mm)	Up to 10	–20 °C to +65 °C

Recommended max torque for John Guest plastic threads when mating with BSP / BSPT fittings:

1/8" – 1/4" threads: 1.5 Nm
3/8" – 1/2" threads: 3.0 Nm
3/4" threads: 4.0 Nm

Industrial Applications

The FHKU is used in practically every imaginable field, including the food, chemical, industrial, and semiconductor sectors. This flow sensor is available in various configurations and can be easily adapted to meet specific customer requirements. The newly developed ceramic bearing is also suitable for applications that require continuous, day-and-night operation. Common applications include:

Water filter monitoring
Inline liquid dispensing
Fermentation and brewing processes
Chemical dosing systems
Wine and beverage bottling lines

The FHKU flowmeter is configured to your specific plumbing needs:

Plastic tubes - Polyethylene, nylon, and polyurethane conforming to the tolerances shown below. For soft tubing or thin wall tube, we recommend the use of tube inserts.
Braided tubes - Use of clamps to retain braided tube on barbs is recommended.
Soft metal tubes - Brass, copper, or mild steel.
Hard metal tubes - We do not recommend Super Speedfit fittings for hard metal or chromium-plated tubes.

Choose Daitron to Be Your FHKU Series Digmesa Flow Sensor Distributor

Daitron is a trusted distributor with the technical expertise and product selection to support complex applications. We help OEMs and engineers find the right solutions quickly and reliably. As an authorized Digmesa distributor, we provide genuine FHKU Series flow sensors backed by detailed specs, application notes, and engineering support. When you partner with Daitron, you can rely on:

Technical documentation and application guidance to support confident purchasing decisions
Local stocking is available for your Just In Time manufacturing needs to get the advantage of volume discounts, overnight shipping if needed, and minimal stock on hand.
We supply only genuine, factory-authorized products
U.S.-based support and distribution for fast response times, domestic logistics, and engineering assistance

Learn How Daitron Can Be Your Supplier for FHKU Series Digmesa Flow Sensors

If you're searching for a supplier for the FHKU Series Digmesa Flow Sensor, Daitron is your solution. Contact us to learn more, or request a quote online. Looking for other flowmeters and liquid sensing products? Explore our inventory of high-performance liquid monitoring solutions.

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