What Trafag does

Trafag AG is a privately held Swiss industrial sensor manufacturer founded in 1942 and headquartered in Bubikon, Switzerland. The company designs and produces precision sensors for pressure, temperature, gas density, and level measurement, with core technology centered on a proprietary thin-film-on-steel sensor cell that delivers long-term stability, media-temperature measurement capability, and accuracy of 0.3%–0.5% FS. Products include pressure transmitters, electronic and electromechanical pressure switches, manometers, thermostats, temperature transmitters and gauges, gas density monitors and sensors (for SF6 and alternative insulating gases in high- and medium-voltage switchgear), and level sensors. A subset of pressure transmitters (NAI 8273, FPI 8237) supports the IO-Link digital communication standard for Industry 4.0 integration. Manufacturing is conducted in-house under clean-room conditions at the Minergie-certified headquarters, and the company operates an ISO 17025-accredited SCS calibration laboratory.

Trafag sells primarily to enterprise industrial customers across eight core verticals: railway, hydraulics, shipbuilding, large engines, gas density (power grid), hydrogen, hazardous areas (ATEX), and test and measurement. The go-to-market model combines direct enterprise field sales via wholly-owned subsidiaries in Switzerland, Germany, Austria, the USA, Spain, Italy, the UK, Japan, China, and India, with a distributor network extending reach to more than 40 countries. Pricing is quote-based and application-specific rather than list-priced, reflecting customized configurations and B2B contract terms. Revenue is generated through hardware sales (sensors, switches, gauges, accessories), calibration services from the accredited laboratory, and a growing share of digital/IO-Link-enabled smart-sensor products. Recent strategic activity includes a March 2026 product launch (Gas Density Monitor 8719) targeting renewable energy infrastructure and the September 2025 establishment of a China subsidiary focused on gas density for the power grid industry.

Name

Trafag

Legal name

Trafag AG

Website

https://trafag.com

Company type

Private

Founded year

1942

Operating status

Operating

Headcount range

251–500 employees

Short description

Trafag AG is a Swiss manufacturer of precision industrial sensors—pressure, temperature, gas density, and level measurement—built on proprietary thin-film-on-steel technology, serving enterprise customers in railway, hydraulics, shipbuilding, power grid, hydrogen, and hazardous-area applications across 40+ countries via wholly-owned subsidiaries and distributors.

Ownership category

akta.pro rank

Product category

Industrial Sensors and Measurement Instruments

NAICS

Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513)

SIC

Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Sensors & Feedback Devices (Pressure, Flow, Position, Encoders, Transducers) (IMAHAGAK)

akta.pro secondary industries

Environmental Sensors (Temperature/Humidity/Gas/Air Quality) (HDAHALAD), Industrial-Grade Sensors & Transducer Components (Discrete sensing elements, transducers, MEMS sensors) (IMAGAJAO)

Keywords

• Industrial pressure sensors
• Gas density monitoring
• Temperature measurement instruments
• Switchgear monitoring systems
• Sensor calibration services

Headquarters

HQ city

Bubikon

HQ country

Switzerland

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Industrial sensor hardware sales: Trafag generates revenue primarily through the sale of precision sensors including pressure transmitters, electronic and electromechanical pressure switches, thermostats, temperature transmitters and gauges, gas density monitors and sensors, and level sensors and switches. Products are sold directly through subsidiaries and via distributor networks to industrial customers.
2. Calibration services: SCS-certified calibration laboratory providing ISO 17025 compliant calibration services for sensors and instruments, offered as an additional service to customers.
3. Accessories and spare parts: Wide range of original accessories matched to Trafag products, including spare parts and complementary components.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Trafag AG designs, manufactures, and sells precision industrial sensors for pressure, temperature, gas density, and level measurement, including pressure transmitters, electronic and electromechanical pressure switches, manometers, thermostats, temperature transmitters and gauges, gas density monitors and sensors, and level sensors and switches. The company also operates an ISO 17025 accredited SCS-certified calibration laboratory. Products are built on proprietary thin-film-on-steel sensor technology and serve safety-critical applications across railway, hydraulics, shipbuilding, large engines, hazardous areas, gas insulated switchgear, hydrogen, and renewable energy infrastructure.

Product overview

Trafag offers a comprehensive portfolio of precision sensor products for industrial applications. The core product lines include pressure transmitters, electronic and electromechanical pressure switches, pressure gauges (manometers), thermostats, temperature transmitters and gauges, gas density monitors and sensors, and level sensors and switches. The company also provides original accessories and an ISO 17025 accredited calibration service. A subset of pressure transmitter products feature IO-Link digital communication technology (NAI 8273 and FPI 8237 models), enabling Industry 4.0 applications with smart sensor capabilities. The newest product is the Gas Density Monitor 8719, launched in March 2026 for renewable energy infrastructure.

Differentiator

Problem solved

Functional benefit

Products and services

• Pressure Transmitters Electronic pressure measurement instruments used for electronically measuring and evaluating pressure, proven in demanding applications in harsh environments across industrial sectors.
• Electronic Pressure Switches Robust electronic pressure switches that monitor pressure behavior of liquid and gaseous media in plant construction, mechanical engineering, hydraulic systems, process engineering, rail vehicles, shipbuilding, and water treatment.
• Electromechanical Pressure Switches Mechanical pressure switches providing high vibration resistance and switch point precision combined with an extremely robust and durable design for industrial applications.
• Manometers (Pressure Gauges) Pressure gauges for gauge, absolute, and differential pressure measurement, proven millions of times over in industrial use.
• Thermostats Robust thermostats that have proven their reliability in the most adverse environmental conditions for over 70 years of industrial use.
• Temperature Transmitters Temperature measurement instruments for electronic temperature measurement and evaluation in industrial processes.
• Temperature Gauges Temperature gauges for displaying and measuring temperature in various industrial applications.
• Gas Density Monitors and Gas Density Sensors Precise, reliable, and maintenance-free instruments developed for monitoring SF6 and other gases in high- and medium-voltage switchgear.
• Level Sensors and Switches Level measurement instruments for monitoring liquid and material levels in industrial processes.
• Accessories Original accessories optimally matched to Trafag products including pressure transmitters, pressure switches, and thermostats, including spare parts and complementary components.
• NAI 8273 IO-Link Pressure Transmitter and Switch Smallest pressure transmitter with media temperature measurement featuring 0.3% or 0.5% FS accuracy, COM3 IO-Link communication at 230.4kBaud, 1ms process cycle time, two configurable switching outputs (PNP/NPN/Push-Pull), and optional 5-fold overpressure resistance for Industry 4.0 applications.
• FPI 8237 IO-Link Flush Membrane Transmitter and Switch Flush-membrane pressure transmitter with absolutely smooth and robust flush-mounted measuring diaphragm made of corrosion-resistant duplex steel, featuring wide temperature range and excellent long-term stability with thin-film-on-steel sensor technology and IO-Link communication.
• Gas Density Monitor 8719 Monitoring device designed for gas insulated switchgear in renewable energy applications including solar farms and offshore wind turbines, featuring precise density measurement, temperature compensation down to -60°C, up to five galvanically separated circuits, IP65/IP67 protection, and compliance with SF6 and alternative gases.
• Accredited Calibration Laboratory Independent SCS-certified laboratory calibrating in accordance with ISO 17025, offering short throughput times, close proximity, many years of expertise, attractive conditions, and additional calibration services for sensors and instruments.

Quantifiable outcome

• Precise gas density measurement with temperature compensation down to -60°C
• +3 more outcomes

Named customers4 records

Segments8 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability1 record

Feature5 records

Partnerships

Five partnerships are on record, tiered core, strategic and major.

• Hitachi EnergycoreChannel Partner/ Reseller/ Distributor · 3 October 2025Hitachi Energy sources Trafag gas density sensors for integration into their high-voltage switchgear solutions. Awarded Trafag Controls India Best Partner Award for the second consecutive year recognizing outstanding partnership performance.
• China IntegratedstrategicImplementation/ SI/ Consulting Partner · 30 September 2025Local implementation and support partner for Trafag China subsidiary establishment. Assisted with market entry, local business development, and customer engagement in China market.
• GE VernovamajorChannel Partner/ Reseller/ Distributor · 17 September 2025GE Vernova sources Trafag products for energy infrastructure applications. Honored Trafag India as a very reliable partner recognizing consistent quality and service delivery.
• Doppelmayr/GaraventacoreStrategic or Co-development PartnerCollaboration to develop high-precision pressure sensor solutions for cable car operations. Trafag sensors ensure maximum safety and reliability in cable car systems under extreme environmental conditions. Case study published demonstrating application outcomes.
• Gomero and RegalcoreStrategic or Co-development PartnerJoint development of AI-supported micro-leak detection solution for high-voltage switchgear. Combines Trafag's gas density sensor technology with Gomero's analytics platform and Regal's infrastructure expertise for intelligent wireless monitoring.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• ABB Measurement & Analytics: ABB supplies industrial pressure, temperature, gas density, and analytical instrumentation as part of its broader electrification and process-automation portfolio. It overlaps Trafag's gas density and process measurement lines and competes in the same power and process end markets.
• Honeywell Process Solutions: Honeywell offers pressure, temperature, and analytical instrumentation within its broader process-control and industrial automation stack. It overlaps with Trafag in process industries and rail/specialty applications but operates at significantly greater scale.
• Emerson Electric (Rosemount): Emerson's Rosemount division is a global incumbent in pressure, temperature, and level instrumentation for process industries. It overlaps Trafag's portfolio broadly but competes from a much larger scale and broader automation/control platform.

Direct peers

• ifm electronic GmbH: ifm electronic manufactures industrial sensors (pressure, temperature, level, position) with a focus on IO-Link and Industry 4.0 connectivity, directly competing with Trafag's NAI 8273 and FPI 8237 IO-Link transmitters in factory automation and mobile machinery.
• VEGA Grieshaber KG: VEGA specializes in level, pressure, and switching instrumentation for industrial process automation, with strong positions in water/wastewater, chemicals, and food. Its pressure measurement line and Switzerland/Germany mid-market industrial heritage make it a close comparable to Trafag.
• Endress+Hauser Group: Endress+Hauser is a Swiss-German family-owned supplier of industrial process instrumentation including pressure, temperature, level, and analytical measurement, serving the same process-industry, energy, and rail end markets as Trafag with comparable B2B field-sales motion.
• Baumer Group: Baumer is a Swiss industrial sensor manufacturer offering pressure, temperature, level, force, and vision sensors for factory and process automation, with a comparable mid-size family-owned profile and overlapping hydraulics and process-industry customers.
• Keller Pressure / Keller AG für Druckmesstechnik: Keller is a Swiss specialist in piezoresistive and thin-film pressure sensors and transmitters, competing directly with Trafag in high-precision pressure measurement for hydraulics, gas, and test/measurement applications.
• WIKA Alexander Wiegand SE & Co. KG: WIKA is a German-headquartered global leader in pressure, temperature, force, and level measurement instrumentation, with a broad industrial sensor portfolio that directly overlaps Trafag's core pressure/temperature product lines across hydraulics, rail, and process industries.

Emerging players

• BD|SENSORS (BD-Industrial): BD|SENSORS is a mid-sized German specialist in pressure measurement and level sensing with similar product breadth to Trafag (pressure transmitters, switches, level probes) and a comparable focus on industrial OEM and process customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Trafag