Flusso
Flusso is a Cambridge, UK-based semiconductor company that designs ultra-miniature flow, air velocity, and hydrogen sensors using proprietary TMEMS thermal sensing technology, serving consumer appliance, data centre, HVAC, medical, automotive, semiconductor, and hydrogen energy customers globally.
- Company typePrivate
- Founded2016
- HeadquartersCambridge, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Flusso does
Flusso is a UK-based semiconductor company that designs and manufactures ultra-miniature flow, air velocity, and gas sensors built on its proprietary TMEMS (Thermal Micro-Electromechanical Systems) technology. Founded in 2016 as a spin-out from the University of Cambridge with support from Cambridge Enterprise, the company commercialises a tungsten-based thermal sensing platform implemented in standard CMOS processes, enabling sensors it describes as the world's smallest in their categories — 3.5mm x 3.5mm for flow and air velocity, claimed to be 80% smaller than the nearest competitive device. The product lineup is anchored by the FLS112 mass flow sensor (the June 2024 replacement for the legacy FLS110) and the FLS122 air velocity sensor, with a 2025 expansion into hydrogen sensing via the FLS310 thermal conductivity sensor and the GSM5310 hydrogen leak detection module. All sensors are supported by evaluation kits and are designed to be SMD-assembly compatible for high-volume manufacturing.
The underlying technology delivers fully temperature-compensated flow measurement across a range of 0.001 to over 500 standard litres per minute, repeatability of 0.5 sccm +0.5% measured value, and air speed measurement to 20 m/s with ±5% span accuracy. Manufacturing is fabless, leveraging CMOS MEMS foundry partners to achieve scalability described as "tens of millions of parts per month." Patent-protected innovations underpin the platform, with the CTO holding 150 patents and the CEO holding 16 patents and 70+ publications, and the company holds ISO 9001 and ISO 14001:2015 certifications.
Flusso operates a horizontal go-to-market targeting seven use-case segments: consumer appliances (vacuum cleaners, smart inhalers), hyperscale data centres (where cooling accounts for ~40% of power consumption and demand is growing 15% year-on-year), industrial HVAC, medical, automotive (in-cabin air quality, EV battery cooling), semiconductor manufacturing, and hydrogen energy. Revenue is generated through hardware sales of sensors and evaluation kits, supplemented by engineering support services covering firmware, design guides, and application engineering. Distribution is primarily direct enterprise field sales with consultative engagement, complemented by self-serve evaluation kit ordering via the website. Following a $5.7 million Series A in June 2020 led by Parkwalk Advisors, Flusso was jointly acquired in August 2022 for £28 million by an undisclosed company and a global private equity fund focused on semiconductor and high-tech investments; under new ownership, the company has expanded headcount to 100+, doubled its Cambridge facilities, and broadened its product portfolio into hydrogen safety.
Flusso firmographics
Firmographics- Name
- Flusso
- Legal name
- Flusso Ltd
- Website
- https://flussoltd.com
- Company type
- Private
- Founded year
- 2016
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Flusso is a Cambridge, UK-based semiconductor company that designs ultra-miniature flow, air velocity, and hydrogen sensors using proprietary TMEMS thermal sensing technology, serving consumer appliance, data centre, HVAC, medical, automotive, semiconductor, and hydrogen energy customers globally.
- Ownership category
- akta.pro rank
Flusso industry classification
Industry- Product category
- MEMS Flow and Air Velocity Sensors
- NAICS
- Other Measuring and Controlling Device Manufacturing (334519), Totalizing Fluid Meter and Counting Device Manufacturing (334514)
- SIC
- Industrial Instruments For Measurement, Display, And Control (3823), Totalizing Fluid Meters & Counting Devices (3824)
- akta.pro primary industry
- Industrial Sensors (Pressure, Temperature, Flow, Level, Proximity, Vibration) (IMAGAFAA)
- akta.pro secondary industries
- Environmental Sensors (Temperature/Humidity/Gas/Air Quality) (HDAHALAD), Sensor Fusion, Interface ICs & Modules (AFE/Readout/Packaging/Calibration) (HDAHALAO), Sensors & Feedback Devices (Pressure, Flow, Position, Encoders, Transducers) (IMAHAGAK)
Keywords
Where Flusso is headquartered
LocationHeadquarters
- HQ city
- Cambridge
- HQ country
- United Kingdom
- HQ region
- Europe
Offices2 records
Markets served
Flusso business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Operations, Personnel, Marketing or Sales, Infrastructure
Revenue model
- Flow Sensors: Sale of mass flow sensors (FLS110/FLS112) and air velocity sensors (FLS122) as hardware components for integration into customer products
- Evaluation Kits: Sale of evaluation kits that allow customers to assess sensor performance in their applications before committing to volume production
- Engineering Support Services: Full package of electronic, mechanical and fluidic engineering knowhow and support to incorporate flow measurement into products, including firmware, software configuration tools, design guides, and application engineering support
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom hardware pricing based on volume and customisation requirements |
Go-to-market motion2 records
Distribution channels2 records
Marketing channels7 records
Flusso product offering
Product offeringCore offering
Flusso designs, develops, and supplies ultra-miniature MEMS flow, air velocity, and thermal conductivity sensors based on its proprietary TMEMS tungsten-based thermal sensing technology, manufactured using standard CMOS processes. Its product lineup includes the FLS112 mass flow sensor, FLS122 air velocity sensor, FLS310 thermal conductivity sensor, and GSM5310 hydrogen leak detection module, sold as components for integration into customer products across consumer appliances, HVAC, data centres, medical, automotive, and hydrogen safety applications. Evaluation kits and engineering support services are provided alongside the sensors.
Product overview
Flusso provides a portfolio of ultra-miniature flow and air velocity sensors powered by proprietary TMEMS (Thermal MEMS) technology, which uses tungsten-based thermal sensing principles within standard CMOS manufacturing processes. The product lineup centers on the FLS112 mass flow sensor (replacing the legacy FLS110) and FLS122 air velocity sensor, both sharing a 3.5 mm x 3.5 mm footprint. The company has expanded into hydrogen sensing with the FLS310 thermal conductivity sensor and GSM5310 hydrogen leak detection module. All products are supported by evaluation kits. Target applications span consumer appliances, hyperscale data centres, industrial HVAC, automotive, medical, and semiconductor manufacturing sectors.
Differentiator
Problem solved
Functional benefit
Products and services
- FLS112 Mass Flow Sensor Compact mass flow sensor with 3.5 mm x 3.5 mm footprint that replaces the FLS110. Offers accurate bidirectional flow measurements particularly at low flow rates, improved moisture resistance, and real-time fully temperature-compensated measurement of mass flow, volumetric flow, air speed, or differential pressure. Measures flow to 500 slm or more with repeatability of 0.5 sccm +0.5% measured value.
- FLS122 Air Velocity Sensor World's smallest air velocity sensor with 3.5 mm x 3.5 mm footprint, 80% smaller than competitive devices. Silicon-MEMS thermal air velocity sensor with air speed range up to 20 m/s and span accuracy of +/- 5% measured value. Designed for board-mounted air velocity measurements for thermal management and filter monitoring in space-constrained environments.
- FLS310 Thermal Conductivity Sensor CMOS MEMS thermal conductivity sensor for hydrogen detection applications. Features ultra-small surface mount package (3×3 mm) and membrane crack detection circuit. Fully compatible with SMD assembly processes. Suitable for high-volume consumer and industrial applications.
- GSM5310 Hydrogen Leak Detection Module Hydrogen leak detection sensor module using Flusso's FLS310 thermal conductivity sensor. Features accuracy ± max (1000 ppm, 10% m.v.) across temperature range of -40 – 85 °C and humidity range of 0 – 40 g/m3. Fast start up (<1 s) and response time (<4 s), with high selectivity to hydrogen in humid air and very high immunity to poisoning. Equipped with CAN interface.
- Evaluation Kits Hardware evaluation kits enabling users to assess Flusso sensor performance within their own applications before committing to volume production. Available for both the FLS122 air velocity sensor and FLS112 mass flow sensor product lines, supporting product-led adoption.
Quantifiable outcome
- Footprint 80% smaller than nearest competitive air velocity sensor
- +4 more outcomes
Companies that use Flusso
Customer profileSegments7 records
Ideal customer profiles6 records
Flusso technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Flusso partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Williams Advanced EngineeringcorePart of the Foresight Williams Technology EIS Fund. Provides expertise in fluid dynamics and valuable commercial insights to Flusso. Unique collaboration supporting the company in development and commercialisation.
Scale indicators6 records
Recent moves10 records
Expansion highlights6 records
Flusso competitors and assessment
Company assessmentDirect peers
- Sensirion: Swiss-based specialist manufacturer of MEMS flow, gas, humidity, and temperature sensors for HVAC, medical, and consumer markets. Directly comparable to Flusso as a sensor company using MEMS technology to address flow and environmental sensing use cases.
- Innovative Sensor Technology (IST): Specialist manufacturer of thermal mass flow and thermal conductivity sensors for industrial and medical applications. Directly comparable to Flusso's TMEMS-based thermal flow and gas sensing products and serves overlapping customer segments.
Broad incumbents
- STMicroelectronics: European integrated device manufacturer offering a broad MEMS sensor portfolio including flow, environmental, and gas sensors under the ISM brand. Comparable as a semiconductor company with CMOS-based MEMS flow/gas sensor products targeting similar industrial applications.
- TE Connectivity: Global sensor and connector manufacturer serving industrial, automotive, and medical markets with a broad MEMS portfolio. Compares to Flusso as a large incumbent in industrial sensor components with global manufacturing footprint.
- Bosch Sensortec: MEMS sensor division of Robert Bosch producing accelerometers, gyroscopes, and environmental sensors at massive scale. Competes with Flusso as a fabless-leveraged MEMS specialist targeting consumer and industrial IoT applications.
- Infineon Technologies: German semiconductor company with the Xensiv sensor family covering environmental, flow, and gas detection. Overlaps with Flusso in CMOS-based gas and flow sensing for HVAC, automotive, and industrial safety.
- Omron Electronic Components: Industrial sensing specialist with broad flow, pressure, and environmental sensor offerings. Overlaps with Flusso's industrial HVAC and consumer appliance flow sensing focus from a larger incumbent position.
- SICK AG: German industrial measurement and automation specialist producing flow, gas, and environmental sensors for factory automation and HVAC. Overlaps with Flusso in flow sensing use cases for industrial customers.
- Honeywell Sensing & Safety Technologies: Diversified industrial sensor and controls giant offering flow, pressure, and gas sensors across HVAC, medical, and industrial automation. Directly competes with Flusso in flow measurement but from a much broader portfolio serving global OEM customers.
Emerging players
- Posifa Technologies: US-based MEMS flow sensor company offering miniature mass flow and air velocity sensors for HVAC, medical, and industrial markets. Directly comparable to Flusso as a smaller specialist competing in similar flow sensing applications and form factors.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Flusso social profiles
Digital presenceFlusso compliance and trust
Trust signalCompliance2 records
Flusso financial estimates
Financial estimateRevenue estimate
Valuation estimate
Flusso leadership team
Management profileNumber of profiles
Profiles6 records
Flusso funding detail
Funding detailFunding overview
Funding rounds2 records
Investors6 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Flusso M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Flusso
What does Flusso do?
Flusso designs, develops, and supplies ultra-miniature MEMS flow, air velocity, and thermal conductivity sensors based on its proprietary TMEMS tungsten-based thermal sensing technology, manufactured using standard CMOS processes. Its product lineup includes the FLS112 mass flow sensor, FLS122 air velocity sensor, FLS310 thermal conductivity sensor, and GSM5310 hydrogen leak detection module, sold as components for integration into customer products across consumer appliances, HVAC, data centres, medical, automotive, and hydrogen safety applications. Evaluation kits and engineering support services are provided alongside the sensors.
Is Flusso a public or private company?
Flusso is a private company. It is classified as private equity controlled and is currently operating.
When was Flusso founded?
Flusso was founded in 2016. It employs 11 to 50 people.
Where is Flusso based?
Flusso is headquartered in Cambridge, United Kingdom, in the Europe region.
How does Flusso make money?
Three revenue lines are on record. Flow Sensors are the primary driver. The others are evaluation Kits and engineering Support Services.
Who are Flusso's main competitors?
Direct peers on record are Sensirion and Innovative Sensor Technology (IST). Broad incumbents are STMicroelectronics, TE Connectivity, Bosch Sensortec, Infineon Technologies, Omron Electronic Components, SICK AG and Honeywell Sensing & Safety Technologies. Posifa Technologies is listed as an emerging player.
Does Flusso have an API?
No public API is recorded for Flusso.
What industry is Flusso in?
Flusso's product category is MEMS Flow and Air Velocity Sensors. Its primary akta.pro industry code is IMAGAFAA, Industrial Sensors (Pressure, Temperature, Flow, Level, Proximity, Vibration), with a secondary code of HDAHALAD, Environmental Sensors (Temperature/Humidity/Gas/Air Quality). Its NAICS code is 334519 and its SIC code is 3823.