What SST Sensing does

SST Sensing Limited is a UK-headquartered (Coatbridge, Scotland) specialty manufacturer of gas and liquid sensors, founded in 2002 and operating with 51-100 employees. The company designs and produces optical oxygen sensors under the LuminOx brand (luminescence-quenching technology), zirconia oxygen sensors across multiple form factors (flange mount, miniature, probe, PCB mounted, screwfit), the OXY-Flex in-situ oxygen analyzer, and an extensive family of optically-based liquid level switches under the Optomax, LLHP, LLHT, and LLIS brands, as well as NDIR CO2 sensors (CozIR, SprintIR, ExplorIR). Core proprietary technologies include a hybrid zirconia sensing system that integrates ion pumping with the Nernst effect for high-temperature oxygen partial pressure measurement, and an infrared LED optical level detection method using total internal reflection. The company's revenue model is hardware sales of sensors and analyzers combined with bespoke customization services, sold via direct application-engineer-led sales and a global distributor network of 17+ partners across Europe, North America, and Asia-Pacific.

SST Sensing serves industrial OEM and end-user customers across at least nine verticals, with industrial manufacturing (combustion control, boiler optimization, emissions monitoring) as the primary segment, followed by automotive and transportation (DEF/AdBlue level monitoring), data centers and telecom (cooling leak detection), oil and gas (ATEX/IECEx level switching), aerospace (OBIGGS fuel tank inerting), medical and healthcare (equipment fluid detection), food and beverage (controlled atmosphere storage), logistics and cold chain, and additive manufacturing (build chamber inerting). Commercial motion is consultative: in-house application engineers work directly with customers' engineers, customization modifies standard sensors to exact specifications when needed, and pricing is quotation-based with multi-year contract cadences. Only one named customer outcome is disclosed (Kurita achieving 20% reduction in wastewater treatment chemical consumption with annual savings of 25,000 euros).

In November 2024, SST Sensing was acquired by DwyerOmega as part of its acquisition of Process Sensing Technologies (PST), making SST a wholly-owned subsidiary brand within DwyerOmega's Sensors Business Unit alongside Analytical Industries Inc., Dynament, and Sensore Electronic GmbH. The company holds ISO 9001:2015 quality certification and product-level approvals including ATEX, IECEx, UKCA, cMETus, MDSAP, and FDA for hazardous area and medical applications. No revenue, funding, or ownership details beyond the parent relationship are publicly disclosed.

Name

SST Sensing

Legal name

SST Sensing Limited

Website

https://sstsensing.com

Company type

Private

Founded year

2002

Operating status

Operating

Headcount range

51–100 employees

Short description

SST Sensing Limited is a UK-based specialty manufacturer of optical oxygen sensors (LuminOx), zirconia oxygen sensors, optical liquid level switches (Optomax, LLIS), and NDIR CO2 sensors, serving industrial OEMs across combustion, aerospace, medical, automotive, and data center applications. Now a wholly-owned subsidiary of DwyerOmega.

Ownership category

akta.pro rank

Product category

Industrial Gas and Liquid Sensor Manufacturing

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

Process Analytical Instrumentation (Gas analyzers, spectroscopy, pH/ORP, conductivity) (IMAGAFAE)

akta.pro secondary industry

Environmental Sensors (Temperature/Humidity/Gas/Air Quality) (HDAHALAD)

Keywords

• Gas sensor manufacturing
• Liquid level switches
• Oxygen sensor technology
• NDIR carbon dioxide sensors
• Hazardous area sensors

Headquarters

HQ city

Cambridge

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Sensor Hardware Sales: SST Sensing generates revenue through the sale of physical sensors and sensor systems including optical oxygen sensors, zirconia oxygen sensors, liquid level switches, and CO2 sensors. The company also offers customization services to modify standard products to customer specifications, adding value through application-specific engineering.
2. Custom Sensor Solutions: In-house ability to take any standard range of sensors and customize to exact customer specification when standard specs are unsuitable. This customization capability provides additional revenue streams through bespoke engineering services.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

SST Sensing designs and manufactures gas and liquid sensor products including optical oxygen sensors, zirconia oxygen sensors, optical liquid level switches, and NDIR carbon dioxide sensors. The company's portfolio spans standard and customized sensor configurations with multiple form factors (flange mount, PCB mounted, screwfit, probe) for industrial, hazardous area, and OEM integration applications. SST operates a consultative sales model with in-house customisation capability to adapt standard sensors to exact customer specifications.

Product overview

SST Sensing is a global provider of gas and liquid sensor solutions, specialising in optical oxygen sensors (LuminOx series), zirconia oxygen sensors (flange mount, miniature, probe, PCB mounted, screwfit variants), liquid level switches (LLIS hazardous area, Optomax Industrial Glass, Industrial Range, Digital, Basic, LLHP, LLHT series), and CO2/NDIR gas sensors (CozIR, SprintIR, ExplorIR families). The company also offers associated brands under the DwyerOmega Sensors Business Unit including Analytical Industries (oxygen analysers, PI2-MS), Dynament (NDIR gas sensors), and Sensore Electronic (zirconia oxygen transmitters, OXY-ProXT, Microx ProSafe). These products serve industrial combustion control, hazardous area safety, semiconductor manufacturing, aerospace, additive manufacturing, data centres, telecommunications, HVAC, and automotive applications. All sensors are manufactured under ISO 9001:2015 certification with ATEX, IECEx, UKCA, cMETus, MDSAP, and FDA approvals for hazardous area applications.

Differentiator

Problem solved

Functional benefit

Brands

• Optomax: Optical liquid level switch product line including Industrial, Digital, and Basic ranges.
• LuminOx
• LLIS
• OXY-Flex

Products and services

• LuminOx Optical Oxygen Sensor Miniaturised luminescence-based optical oxygen sensor using an oxygen-sensitive luminescent dye (luminophore) to measure oxygen through luminescence quenching, offering high selectivity and minimal cross-sensitivity to other gases. For industrial gas monitoring, controlled atmosphere, and OEM integration.
• LuminOx Sealed Optical Oxygen Sensor Sealed version of the LuminOx optical oxygen sensor designed for environments requiring hermetic sealing.
• LuminOx Flow-Through Optical Oxygen Sensor Flow-through variant of the LuminOx optical oxygen sensor designed for inline gas stream monitoring.
• Flange Mount Zirconium Dioxide Oxygen Sensor Flange-mounted zirconia oxygen sensor for industrial combustion control applications, designed for high-temperature environments up to 400°C.
• Miniature Zirconium Dioxide Oxygen Sensor Compact zirconia oxygen sensor designed for space-constrained industrial applications requiring high-temperature oxygen measurement.
• OXY-Flex Oxygen Analyser In-situ zirconia-based oxygen analyser for continuous measurement in flue gases and industrial combustion monitoring, with measurement range of 0.1-25% O2 or 0.1-100% O2, operating up to 400°C.
• Probe Zirconium Dioxide Oxygen Sensor Probe-style zirconia oxygen sensor for direct insertion into industrial processes and flue gas monitoring.
• PCB Mounted Zirconium Dioxide Oxygen Sensor PCB-mounted zirconia oxygen sensor designed for OEM integration into electronic systems and control equipment.
• Screwfit Zirconia Oxygen Sensor Threaded screwfit zirconia oxygen sensor for easy installation in industrial process connections.
• Zirconia Oxygen Sensor System Complete zirconia oxygen sensor system with integrated control electronics and stainless steel probe for industrial combustion monitoring.
• Zirconia Oxygen Probe Module Kit Probe module kit for high-temperature oxygen measurement applications, rated up to 400°C, with no reference gas required.
• LLIS Hazardous Area Approved Liquid Level Switch Intrinsically safe optical liquid level switch certified for hazardous environments (ATEX, IECEx, UKCA for Zones 0, 1, and 2) with infrared detection and ±1mm repeatability.
• Optomax Industrial Glass Liquid Level Switch Harsh environment optical liquid level switch with stainless steel housing and glass sensing tip, rated up to 125°C, designed for aggressive chemical environments.
• Optomax Industrial Range Liquid Level Switch Industrial-grade optical liquid level switch capable of driving loads up to 1A, suitable for industrial environments with high-power signalling requirements.
• LLHP Liquid Level Switch High-performance liquid level switch with robust stainless steel housing and larger mounting threads, supporting high switching currents for harsh environments.
• LLHT Glass Tip Liquid Level Switch High-temperature liquid level switch with stainless steel housing and Simax crystal glass sensing tip, rated up to 140°C for extreme industrial and chemical environments.
• Optomax Digital Liquid Level Switch Compact, low-power digital optical liquid level switch with Polysulfone or Trogamid housing, designed for space-constrained applications with digital output.
• Optomax Basic Range Liquid Level Switch Cost-effective analogue optical liquid level switch for high-volume OEM applications such as vending machines, white goods, and automotive.
• LLC Series Liquid Level Switch (Honeywell Alternative) Optical liquid level switch designed as an alternative to Honeywell float switches for industrial and commercial applications.
• CozIR-A Ambient Air CO2 Sensor Low-power NDIR CO2 sensor for ambient air monitoring applications.
• CozIR LP2 Ambient Air CO2 Sensor Low-power NDIR CO2 sensor for ambient air monitoring with enhanced performance specifications.
• SprintIR-R CO2 Sensor High-speed NDIR CO2 sensor for applications requiring rapid response time.
• SprintIR-6S Fast Response CO2 Sensor Ultra-fast response NDIR CO2 sensor designed for applications with rapidly changing CO2 levels.
• ExplorIR-M NDIR CO2 Sensor Robust NDIR CO2 sensor designed for demanding industrial environments with high vibration or variable conditions.
• OXY-ProXT Oxygen Transmitter Pre-calibrated SMART zirconia oxygen transmitter providing precise plug-and-play oxygen monitoring from 10ppm to 96% with 4-20mA, 0-5V, RS485 Modbus RTU outputs.
• Microx ProSafe SIL2 Dual Channel Oxygen Transmitter SIL2-rated dual channel oxygen transmitter designed for Safety Instrumented Systems (SIS) and industrial control networks with current-limiting zirconia sensors.
• PI2-MS Ultra Trace Oxygen Analyzer Ultra-trace oxygen analyser measuring ppb levels using AII's 2nd generation Pico-Ion electrochemical sensor with LDL below 2.5ppb, designed for semiconductor and UHP gas applications.
• GPR-1200 Portable Trace Oxygen Analyzer Portable trace oxygen analyser for measuring ultra-low oxygen levels in various industrial applications.
• GPR-1500GB & GPR-2500GB Trace Oxygen Transmitters Trace oxygen transmitters measuring from 0-10ppm to 0-25% O2 with ±2% accuracy, 4-20mA loop-powered output, designed for glove boxes and nitrogen generators with up to 24-month sensor life.
• NDIR Gas Sensors (Platinum & Standard Series) NDIR infrared gas sensors for measuring CO2, hydrocarbons, nitrous oxide, and refrigerants across Standard and Platinum series with plug-and-play design.
• Data Center Cooling Series Liquid Level Switch Optical liquid level switch from the Data Center Cooling Series for coolant leak detection in data centre and server room applications.
• LuminOx Evaluation Interface Board Evaluation interface board enabling customers to evaluate and integrate the LuminOx oxygen sensor into prototypes and OEM systems.
• Probe Screened Zirconia Oxygen Sensor Probe zirconia oxygen sensor with screened cable for shielded installations in electrically noisy industrial environments.
• Custom Sensor Configuration and Modification Service In-house engineering service that takes any standard range of SST sensors and modifies or customizes it to exact customer specifications when standard options are unsuitable. Delivered as bespoke hardware configurations.

Quantifiable outcome

• SST sensors enable 20% reduction in wastewater treatment chemical consumption and annual savings of 25,000 euros for customers

Named customers1 record

Segments9 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

21 partnerships are on record, tiered core and standard.

• DwyerOmegacoreStrategic or Co-development Partner · 1 November 2024In November 2024, DwyerOmega acquired Process Sensing Technologies (PST) and its associated brands including SST Sensing Limited. DwyerOmega strives to be the global leader of precision measurement solutions with over 800+ years of combined engineering excellence.
• WEEK TECHNOLOGY LTDstandardChannel Partner/ Reseller/ DistributorGlobal distributor based in Hong Kong serving the Asia-Pacific region. Provides local sales and support for SST Sensing products.
• IBA-SENSORIK GmbHstandardChannel Partner/ Reseller/ DistributorGerman distributor providing SST Sensing sensors to industrial customers in Germany.
• DICO FILTROstandardChannel Partner/ Reseller/ DistributorPortuguese distributor serving the Iberian market with SST Sensing products.
• GARDANET S.R.LstandardChannel Partner/ Reseller/ DistributorItalian distributor for SST Sensing sensor products.
• GLOBAL ELECTRONICS CORPORATIONstandardChannel Partner/ Reseller/ DistributorJapanese distributor based in Tokyo, serving the Japanese market with SST Sensing products.
• MADISON COstandardChannel Partner/ Reseller/ DistributorUS-based distributor serving the American market with SST Sensing sensors.
• MARITEXstandardChannel Partner/ Reseller/ DistributorPolish distributor providing SST Sensing products in the Polish market.
• REPCOMstandardChannel Partner/ Reseller/ DistributorItalian distributor serving the northern Italy market.
• ROSSMAN ELECTRONIC GmbHstandardChannel Partner/ Reseller/ DistributorGerman distributor specializing in sensor products for industrial applications.
• SENSORSTECNICS & SEMICONDUCTORS S.LstandardChannel Partner/ Reseller/ DistributorSpanish distributor serving the Spanish market with SST Sensing products.
• SENSORWELLstandardChannel Partner/ Reseller/ DistributorAustrian distributor providing SST Sensing products in Austria.
• SENTECHstandardChannel Partner/ Reseller/ DistributorDutch distributor serving the Netherlands market.
• SIBALCOstandardChannel Partner/ Reseller/ DistributorSwiss distributor serving the Swiss market with sensor products.
• SMARTLINE CO. LTDstandardChannel Partner/ Reseller/ DistributorSouth Korean distributor based in Seoul, serving the Korean market.
• TELESONstandardChannel Partner/ Reseller/ DistributorDutch distributor serving the Dutch market.
• STRAIN MEASUREMENT DEVICESstandardChannel Partner/ Reseller/ DistributorDistributor with operations in both UK and USA, serving multiple markets.
• nbn Austria GmbHstandardChannel Partner/ Reseller/ DistributorAustrian distributor serving the Austrian market.
• Analytical Industries Inc.coreStrategic or Co-development PartnerPart of the DwyerOmega Sensor Business Unit alongside SST Sensing. Based in Pomona, California, Aii specializes in advanced gas analysis solutions including oxygen sensors and analyzers for industrial, natural gas, medical, and professional diving applications.
• Dynament LtdcoreStrategic or Co-development PartnerPart of the DwyerOmega Sensor Business Unit. Leading provider of miniature infrared gas sensors for OEM gas detection applications. Products enable precise measurement of toxic and combustible gases in oil and gas, chemical, and environmental monitoring sectors.
• Sensore Electronic GmbHcoreStrategic or Co-development PartnerPart of the DwyerOmega Sensor Business Unit. Founded in 2010 in Klosterneuburg, Austria, Sensore specializes in zirconia oxygen sensor performance and manufacturing, expanding PST capabilities in high-performance oxygen sensing.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Honeywell: Global industrial sensing incumbent whose oxygen sensors and float-based liquid level switches are direct alternatives to SST's LuminOx, zirconia, Optomax, and LLC product lines. SST explicitly markets its LLC Series as a Honeywell alternative.
• Emerson (Rosemount): Major process automation vendor with oxygen/combustion analyzers and level instrumentation competing across the same industrial customers SST targets, typically as part of larger integrated control solutions.
• Endress+Hauser: Global process instrumentation leader offering oxygen, liquid level, and analytical sensors. Competes with SST across industrial process and hazardous area applications, though from a much broader instrumentation portfolio.
• Mettler Toledo: Global lab and process instrumentation supplier with liquid level and oxygen sensing solutions for pharmaceutical, food, and chemical customers — overlaps with SST's regulated-vertical strategy.

Direct peers

• City Technology (Honeywell): Specialist in OEM gas sensor modules (electrochemical, NDIR, pellistor) used in safety and emissions monitoring — closely comparable to SST's NDIR/CO2 lines in target applications and OEM sales motion.
• Servomex: Specialist in industrial gas analysis (oxygen, combustion, emissions) with overlapping zirconia and paramagnetic oxygen analyzer portfolios targeted at combustion and process markets — the closest direct specialist peer to SST.
• Dynament: Sister brand under DwyerOmega focused on miniature NDIR gas sensors for OEM gas detection. Overlaps with SST's NDIR/CO2 sensing capability and shares the same parent distribution infrastructure.
• Figaro Engineering: Japanese sensor manufacturer with broad gas sensor portfolio (semiconductor, electrochemical) targeted at OEM and industrial customers — comparable to SST's OEM gas and CO2 sensor business.
• Sensore Electronic GmbH: Sister brand under DwyerOmega specialising in zirconia oxygen sensor technology (OXY-ProXT, Microx ProSafe). Directly comparable to SST's zirconia core and shares parent engineering and sales resources.
• Analytical Industries Inc. Sister brand under the DwyerOmega Sensors Business Unit, specialising in electrochemical oxygen sensors and trace oxygen analyzers (e.g., PI2-MS, GPR series). Closest internal comparable for oxygen analyzer technology.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/sstsensingltd

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

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 SST Sensing