ESI Technology
Founded in 1983 in Wrexham, UK, ESI Technology designs and manufactures pressure transducers and transmitters using proprietary Silicon-on-Sapphire sensor technology. The company serves aerospace, marine, oil & gas, subsea, hydrogen, and industrial markets globally with both standard catalogue and custom-engineered solutions.
- Company typePrivate
- Founded1983
- HeadquartersWrexham, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What ESI Technology does
ESI Technology Limited is a privately-held UK manufacturer of pressure transducers and pressure transmitters, headquartered at Wrexham Technology Park and operating in the pressure measurement market since 1983. The company designs and builds products spanning general-purpose industrial transmitters (GS4200, GS4400/GS4500), high-precision transducers (HI2000 series), high-pressure transmitters up to 5,000 bar (HP1000 series with one-piece titanium sensing assembly), subsea units rated to 3,000 metres depth (PR3913/14/15/20/30), submersible depth and level transmitters (PR3441, PR3420), hazardous-area units (PR3900), and custom-engineered variants for aerospace and defence. Its core sensing platform is Silicon-on-Sapphire (SOS) technology supplemented by piezoresistive sensors, supported by an extensive certification stack including ATEX (zones 0 and 20, Group I M1), IECEx, DNV-GL marine type approval, AS9100D aerospace quality management, and CE marking.
The company's commercial model is direct B2B equipment sales plus aftermarket service. Primary verticals are oil & gas and subsea, aerospace, marine, and hydrogen, with secondary exposure in industrial, test, and water/environmental applications. Sales execute through direct engagement (web quote, phone, email) and a global network of sales partners spanning the UK, US, Germany, France, Netherlands, Norway, Australia, China, Japan, and South Korea. Pricing is project- and configuration-based rather than list price, with multi-year contracts typical in regulated environments. Aftermarket revenue comes from re-calibrations, returns, and repairs, providing a recurring service layer on the installed base.
The business is privately funded with no disclosed external investment, parent company, or public ticker. Recent product activity has concentrated on hydrogen-compatible productisation (HI6200H, HP1000H to ISO 11114), compact high-specification industrial variants (HI6200), and deeper vertical penetration in submersible (PR3441), downhole (HI5000), and aerospace-custom segments, indicating an active R&D and certification pipeline targeting energy-transition and harsh-environment niches.
ESI Technology firmographics
Firmographics- Name
- ESI Technology
- Legal name
- ESI Technology Limited
- Website
- https://esi-tec.com
- Company type
- Private
- Founded year
- 1983
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Founded in 1983 in Wrexham, UK, ESI Technology designs and manufactures pressure transducers and transmitters using proprietary Silicon-on-Sapphire sensor technology. The company serves aerospace, marine, oil & gas, subsea, hydrogen, and industrial markets globally with both standard catalogue and custom-engineered solutions.
- Ownership category
- akta.pro rank
ESI Technology industry classification
Industry- Product category
- Industrial Pressure Measurement Instrumentation
- NAICS
- Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513), Other Measuring and Controlling Device Manufacturing (334519)
- SIC
- Industrial Instruments For Measurement, Display, And Control (3823), Measuring & Controlling Devices, Nec (3829)
- akta.pro primary industry
- Industrial Sensors (Pressure, Temperature, Flow, Level, Proximity, Vibration) (IMAGAFAA)
- akta.pro secondary industries
- Sensors & Feedback Devices (Pressure, Flow, Position, Encoders, Transducers) (IMAHAGAK), Pressure & Force Sensors (Pressure/Strain/Load Cells) (HDAHALAB), Industrial-Grade Sensors & Transducer Components (Discrete sensing elements, transducers, MEMS sensors) (IMAGAJAO)
Keywords
Where ESI Technology is headquartered
LocationHeadquarters
- HQ city
- Wrexham
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
ESI Technology business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Technology or R&D, Operations, Marketing or Sales
Revenue model
- Pressure Transducers and Transmitters Sales: Sale of hardware products including pressure transducers, pressure transmitters, and associated measurement equipment. Products range from general purpose to custom-engineered solutions.
- Re-calibrations, Returns & Repairs: Aftermarket services for existing equipment including recalibration, repairs, and returns processing.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom/Project-based pricing |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels8 records
ESI Technology product offering
Product offeringCore offering
ESI Technology designs and manufactures pressure transducers and pressure transmitters using proprietary Silicon-on-Sapphire (SOS) sensor technology and piezoresistive sensors. The portfolio ranges from general purpose industrial units to custom-engineered solutions capable of measuring from a few inches of water up to 5,000 bar (72,500 psi) across aerospace, marine, oil & gas, subsea, hydrogen, and general industrial sectors. The company also provides re-calibration, repair, and returns services for installed equipment.
Product overview
ESI Technology is a pressure measurement specialist offering a comprehensive portfolio of pressure transducers and transmitters. The product range spans multiple technology platforms including Silicon-on-Sapphire (SOS) sensing technology and piezoresistive sensors. Key product lines include: General purpose transmitters (GS4200, GS4400/GS4500) for industrial applications; High precision transducers (HI2000 Series) for demanding accuracy requirements; High pressure transmitters (HP1000 Series, HP1400) capable of measuring up to 5,000 bar; Subsea pressure transmitters (PR3913, PR3914, PR3915, PR3920, PR3930) rated for submersion to 3,000 meters; Submersible depth and level transmitters (PR3441, PR3420) for hydrostatic level measurement; Hazardous area transmitters (PR3900) with ATEX/IECEx certification; Custom-designed solutions for aerospace, oil and gas, and other specialized applications. The company also offers ESI-USB software for digital pressure measurement connectivity and an online unit converter tool. Products are certified for hazardous areas (ATEX/IECEx), marine applications (DNV), and aerospace (AS9100D).
Differentiator
Problem solved
Functional benefit
Products and services
- GD4200-USB Digital Pressure Transmitter
- GS4200 General Purpose Pressure Transmitter
- HI2000 Series High Precision Pressure Transducer
- HI5000 Downhole Pressure Transmitter
- HP1000 Series High Pressure Transmitter
- PR3914 Subsea Pressure Transmitter
- PR3915 Dual Redundant Subsea Pressure Transmitter
- PR3913 Subsea Control Valve Pressure Transmitter
- PR3930 Subsea Pressure Transmitter with RS-485/Modbus RTU
- PR3920 Differential Subsea Pressure Transmitter
- GS4400/GS4500 General Purpose Pressure Transmitter with RS-485/Modbus RTU
- HI6000 High Temperature Pressure Transmitter
- HP1400 High Pressure Transmitter with RS-485 Interface
- PR3900 Hazardous Area Pressure Transmitter
- PR9000 Heavy Duty Pressure Transmitter
- PR3200 High Pressure Differential Transmitter
- PR3441 Submersible Depth & Level Pressure Transmitter
- PR3420 Submersible Depth & Level Pressure Transmitter with Sludge Platform
- PR3110 Industrial Pressure Transmitter
- Custom-Designed Pressure Transducers and Transmitters
- HI6200 Compact High Specification Pressure Transmitter
- HI6200H Hydrogen Compatible Pressure Transmitter
- HP1000H Hydrogen Compatible High Pressure Transmitter
- Re-calibrations, Returns & Repairs Service
Quantifiable outcome
- Products capable of measuring from few inches of water up to 5,000 bar (72,500 psi)
- +2 more outcomes
Companies that use ESI Technology
Customer profileSegments6 records
Ideal customer profiles5 records
ESI Technology technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
ESI Technology partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- SAP (via Ariba Network)minorESI Technology is registered on the SAP Ariba Network, enabling electronic procurement and business transactions with Ariba-enabled customers.
Scale indicators3 records
Recent moves6 records
Expansion highlights5 records
ESI Technology competitors and assessment
Company assessmentDirect peers
- Keller (Keller Pressure): UK-headquartered specialist manufacturer of piezoresistive pressure transducers and transmitters serving oil & gas, subsea, aerospace and industrial markets. Directly comparable niche specialist with overlapping technology platforms and end-market mix.
Broad incumbents
- Sensata Technologies (Kavlico / BEI Sensors): Large-scale pressure sensor and transducer manufacturer serving industrial, aerospace, oil & gas and heavy vehicle applications. Comparable in product category and end markets but operates at vastly larger scale and with broader sensor coverage.
- IFM Electronic: Industrial sensor specialist offering pressure, level and flow sensors for factory automation and process applications. Direct overlap with ESI's industrial/process-control segment, though broader automation portfolio.
- Baumer Group: European sensor manufacturer providing pressure, force and level sensors for industrial and process applications. Comparable in product category and European mid-market positioning, though Baumer has broader sensor breadth.
- TE Connectivity (Measurement Specialties): Global sensor manufacturer with significant piezoresistive and MEMS-based pressure sensor products serving industrial, medical and aerospace markets. Comparable technology platforms but with vastly larger R&D and commercial footprint.
- Gems Sensors & Controls (a Fortive company): Industrial pressure, level and flow sensor manufacturer serving similar hydraulic, pneumatic and OEM markets. Direct product overlap in general-purpose and high-pressure transmitters, with broader portfolio and global channel reach.
- Honeywell Sensing & Productivity Solutions: Major pressure transducer and transmitter supplier with strong aerospace, defence and industrial process exposure. Competes with ESI in aerospace-qualified and high-reliability applications while also serving broader automation customers.
- Omega Engineering (Spectris / Spectris-Omega): Broad-line instrumentation supplier including a wide range of pressure transducers and transmitters for industrial and process applications. Overlaps with ESI's general-purpose and industrial SKUs but at greater scale and via catalogue distribution.
- Emerson Rosemount (Emerson Automation Solutions): Leading process-industry pressure transmitter supplier for oil & gas, chemical and power applications. Competes with ESI in subsea and process pressure measurement, but Rosemount focuses on higher-volume process automation with broader system offerings.
- WIKA Alexander Wiegand SE & Co. KG: Global market leader in industrial measurement with a comprehensive pressure transducer/transmitter portfolio including hazardous-area, marine and high-pressure variants. Competes with ESI across most end markets but offers much broader instrumentation breadth.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks3 records
Key highlights7 records
Customer concentration
ESI Technology social profiles
Digital presenceESI Technology compliance and trust
Trust signalCompliance5 records
ESI Technology financial estimates
Financial estimateRevenue estimate
Valuation estimate
ESI Technology leadership team
Management profileNumber of profiles
ESI Technology funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
ESI Technology 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 ESI Technology
What does ESI Technology do?
ESI Technology designs and manufactures pressure transducers and pressure transmitters using proprietary Silicon-on-Sapphire (SOS) sensor technology and piezoresistive sensors. The portfolio ranges from general purpose industrial units to custom-engineered solutions capable of measuring from a few inches of water up to 5,000 bar (72,500 psi) across aerospace, marine, oil & gas, subsea, hydrogen, and general industrial sectors. The company also provides re-calibration, repair, and returns services for installed equipment.
Is ESI Technology a public or private company?
ESI Technology is a private company. It is classified as unknown and is currently operating.
When was ESI Technology founded?
ESI Technology was founded in 1983. It employs 11 to 50 people.
Where is ESI Technology based?
ESI Technology is headquartered in Wrexham, United Kingdom, in the Europe region.
How does ESI Technology make money?
Two revenue lines are on record. Pressure Transducers and Transmitters Sales are the primary driver. The others are re-calibrations, Returns & Repairs.
Who are ESI Technology's main competitors?
Keller (Keller Pressure) is listed as a direct peer. Broad incumbents are Sensata Technologies (Kavlico / BEI Sensors), IFM Electronic, Baumer Group, TE Connectivity (Measurement Specialties), Gems Sensors & Controls (a Fortive company), Honeywell Sensing & Productivity Solutions, Omega Engineering (Spectris / Spectris-Omega), Emerson Rosemount (Emerson Automation Solutions) and WIKA Alexander Wiegand SE & Co. KG.
Does ESI Technology have an API?
No public API is recorded for ESI Technology.
What industry is ESI Technology in?
ESI Technology's product category is Industrial Pressure Measurement Instrumentation. Its primary akta.pro industry code is IMAGAFAA, Industrial Sensors (Pressure, Temperature, Flow, Level, Proximity, Vibration), with a secondary code of IMAHAGAK, Sensors & Feedback Devices (Pressure, Flow, Position, Encoders, Transducers). Its NAICS code is 334513 and its SIC code is 3823.