Sensors

What Sensors does

Sensors, Inc. is a privately held, employee-owned manufacturing company founded in 1969 in Saline, Michigan, that designs and builds gas analysis and particle measurement instrumentation used primarily for vehicle emissions compliance and, increasingly, for fugitive methane monitoring. The company's flagship SEMTECH-brand Portable Emissions Measurement Systems (PEMS) are used by automotive OEMs and engine manufacturers for in-use compliance testing, by regulatory agencies (EPA, CARB, European JRC) for independent verification and standard-setting, by oil and gas operators for fugitive methane quantification under EPA Subpart W/OOOOb and OGMP 2.0 programs, and by academic and research institutions for emissions characterization studies.

The core product architecture is the modular SEMTECH DS+ platform, the company's fifth-generation PEMS, which accepts plug-in analyzer modules: SEMTECH NOx (NDUV2.0 with <2 ppm zero drift), FID / Dual FID for hydrocarbons, NH3 via tunable diode laser spectroscopy (TDLS), CPN and CPN 23|10 (condensation particle counter-based particle number measurement down to 10 nm / 23 nm), PM2 (real-time ion mobility plus cumulative gravimetric for particulate mass), and EFM4 / EFM5 exhaust flow meters. Beyond the DS+, Sensors supplies inspection & maintenance equipment (APB particle bench, APA, AMBII) under exclusive supplier agreements with Robert Bosch GmbH and MAHLE GmbH for European Periodic Technical Inspection (PTI) programs, plus a fugitive methane product line (HI-FLOW 2 and HI-FLOW 3 for ATEX-classified explosive environments, Bar Hole Sampler, Methane Slip Analyzer, eREM continuous monitoring). The company holds a 2023 USPTO patent on its Particle Concentration Analyzing System, and its particle number calibration laboratories in Saline, Michigan and Erkrath, Germany are ISO/IEC 17025:2017 accredited.

Sensors generates revenue across three streams: (1) capital equipment sales of PEMS and modules, (2) testing services in which the company's own personnel perform in-use compliance and R&D testing for customers (over 150 heavy-duty tests and 1,500+ light-duty test routes completed cumulatively), and (3) recurring technical support, calibration, and managed services. Pricing is quote-based and not publicly disclosed, reflecting custom configurations and regulatory compliance requirements. The go-to-market model combines direct enterprise sales for major OEM and regulatory accounts with a regional distributor network covering the United States, Canada, Europe (Germany HQ, Italy), China, India, Korea, and Latin America. The company employs 51-100 staff, has delivered 400+ PEMS units and 2,000+ modules to 100+ customers, and operates ISO/IEC 17025:2017 accredited calibration laboratories at both Saline, Michigan and Erkrath, Germany.

Name

Sensors

Legal name

Sensors, Inc.

Website

https://sensors-inc.com

Company type

Private

Founded year

1969

Operating status

Operating

Headcount range

51–100 employees

Short description

Sensors, Inc. designs and manufactures SEMTECH portable emissions measurement systems (PEMS) and gas analysis instrumentation for vehicle emissions testing, oil and gas methane monitoring, and industrial environmental applications. The employee-owned company serves OEMs, regulators, and research institutions globally.

Ownership category

akta.pro rank

Product category

Vehicle Emissions Measurement Instrumentation

NAICS

Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513), Analytical Laboratory Instrument Manufacturing (334516), Other Measuring and Controlling Device Manufacturing (334519), Testing Laboratories and Services (54138)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Services-Testing Laboratories (8734)

akta.pro primary industry

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

akta.pro secondary industries

Continuous Emissions Monitoring Systems (CEMS) & Stack Testing (EUAHADAA), Stack/Source Emissions Testing & CEMS Support (EUAHACAB), Leak Detection, Emissions & LDAR Testing (OGI, methane, fugitive emissions) (EUAEAHAL), Emissions Testing (I/M Programs) & Smog Check Stations (TLAKANAF)

Keywords

• Portable emissions measurement systems
• Vehicle emissions testing equipment
• Gas analysis instrumentation
• Fugitive methane detection
• Particle number measurement

Headquarters

HQ city

Saline

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. PEMS Equipment Sales: Sale of Portable Emissions Measurement Systems (PEMS) including SEMTECH DS+ platform and modular components (gas analyzers, particle counters, flow meters). Revenue is primarily one-time capital equipment purchases to OEMs, regulatory agencies, and research institutions.
2. Testing Services: In-use emissions testing services provided by Sensors' trained personnel. Includes heavy-duty compliance testing, light-duty R&D testing, fuel economy testing, and RDE-LDV testing. Can be project-based or ongoing service contracts.
3. Technical Support and Maintenance: Ongoing technical support, calibration, repair, and certification services for PEMS equipment. Includes 24/7 remote support, training, and ISO 17025 accredited calibration services.

Go-to-market motion2 records

Distribution channels8 records

Marketing channels6 records

Core offering

Sensors, Inc. designs, manufactures, and sells SEMTECH-branded Portable Emissions Measurement Systems (PEMS), gas analyzers, particle counters, exhaust flow meters, and related instrumentation used by engine/vehicle manufacturers, regulatory agencies, and oil & gas operators for vehicle emissions certification, real-driving emissions (RDE) testing, and fugitive methane quantification. The company also provides in-house testing services using its own PEMS equipment and offers ISO/IEC 17025-accredited calibration and technical support.

Product overview

Sensors, Inc. offers a comprehensive portfolio of gas analysis and particle measurement instrumentation organized around the SEMTECH® brand. The core offering is a modular PEMS (Portable Emission Measurement System) architecture centered on the SEMTECH DS+ platform, which serves as the main fifth-generation system for vehicle emissions testing. The DS+ supports plug-in modules for specific measurements: gaseous analyzers (NOx, FID, NH3), particle measurement (CPN for particle number, PM2 for particulate mass), and flow measurement (EFM). For inspection and maintenance markets, the company provides the APB particle bench, APA analyzer, and AMBII gaseous measurement system. Environmental gas analysis products include the AGM, AGM 22, and Gasmitter for various gas measurement technologies. The fugitive emissions portfolio centers on the HI-FLOW 2 (and HI-FLOW 3 for ATEX environments), Bar Hole Sampler, Methane Slip Analyzer, and eREM continuous monitoring system. The company also provides testing services using its PEMS equipment for compliance and R&D testing. All products use established measurement technologies including NDUV, NDIR, TDLAS, CPC, FID, gravimetric, and pitot tube methods.

Differentiator

Problem solved

Functional benefit

Brands

• SEMTECH: SEMTECH is the primary product brand for Sensors' Portable Emission Measurement Systems (PEMS), gas analyzers, and particle measurement instruments, including SEMTECH DS+, SEMTECH CPN, SEMTECH PM2, SEMTECH FID, SEMTECH HI-FLOW 2, and related modules.
• SEMTECH EOL
• SEMTECH User Network (SUN)

Products and services

• SEMTECH DS+ (Light-Duty) Fifth-generation Portable Emission Measurement System (PEMS) for light-duty vehicle emissions testing; measures CO, CO2, NO, NO2, THC, and exhaust flow rate with reduced size, weight, and power requirements.
• SEMTECH DS+ (Heavy-Duty) Fifth-generation PEMS for heavy-duty vehicle emissions testing; measures CO, CO2, NO, NO2, O2, and exhaust flow rate for HDIU compliance.
• SEMTECH EOL (End of Line) Gaseous and exhaust flow measurement system for end-of-line testing, engine tuning, and powertrain testing applications at engine/vehicle manufacturing facilities.
• SEMTECH CPN / CPN 23|10 Particle Number measurement module based on Condensation Particle Counter (CPC) technology; CPN 23|10 variant offers switchable detection between 10nm and 23nm ranges for current and future RDE regulations.
• SEMTECH PM2 Particulate Mass measurement system combining real-time ion mobility technique with cumulative gravimetric filter measurement; EPA-approved alternative method for Heavy-Duty In-Use compliance testing.
• SEMTECH FID / Dual FID Flame Ionization Detector for THC and CH4 hydrocarbon measurement; Dual FID enables simultaneous THC and methane detection for non-methane hydrocarbon (NMHC) calculation.
• SEMTECH NH3 Ammonia analyzer using Tunable Diode Laser Absorption Spectroscopy (TDLAS) for direct measurement of ammonia in raw exhaust with fast response times and minimal NH3 loss.
• SEMTECH NOx NOx analyzer using NDUV2.0 optical technology achieving zero drift less than 2 ppm total NOx across -15°C to 50°C; features 45-minute warmup and 1.5-second rise time.
• SEMTECH EFM4 / EFM5 Exhaust Flow Meters using Bernoulli's principle with averaging pitot tubes and dual-stage differential pressure transducers; EFM4 single tube, EFM5 with interchangeable tubes for various engine sizes.
• SEMTECH EFM-HS High-speed exhaust flow meter for vehicle emissions testing with wide dynamic range measurement capability.
• SEMTECH HI-FLOW 2 Battery-powered handheld high-volume sampler for fugitive methane quantification; measures leak rates in 0.0005 to 25 CFM range with accuracy within 5%, meeting EPA OOOOb and American Carbon Registry requirements.
• SEMTECH HI-FLOW 3 Fugitive methane analyzer with ATEX certification for use in explosive atmospheres; designed for hazardous-area leak detection applications.
• SEMTECH Bar Hole Sampler 3-in-1 tool for pinpointing, quantifying, and purging methane leaks from underground sources; features internal gas sensor, extraction pump, Wi-Fi remote operation, and real-time leak grading.
• SEMTECH Methane Slip Analyzer Analyzer for measuring methane slip from lean-burn natural gas engines; measures CH4, CO2, CO, NOx, and O2 for compliance and operational optimization.
• SEMTECH eREM Continuous monitoring system for fugitive emissions monitoring and reporting.
• APB (Automotive Particle Bench) Particle Number bench for vehicle inspection and maintenance applications; uses CPC technology for periodic technical inspections of vehicles.
• AMBII Gaseous measurement system for inspection and maintenance, measuring CO, CO2, HC, NOx, and O2.
• AGM (Ambient Gas Monitor) Environmental gas analyzer using NDIR, NDUV, and thermal conductivity technologies to measure CO, CO2, CH4, C3H8, C6H14, and N2O.
• Gasmitter Gas measurement device for CO, CO2, CH4, and SF6 analysis in environmental monitoring applications.
• Testing Services In-use emissions testing services performed by Sensors' trained personnel using company PEMS equipment; includes heavy-duty HDIU compliance testing, light-duty R&D testing, RDE testing, and fuel economy testing.

Quantifiable outcome

• SEMTECH NH3 analyzer enabled CE-CERT to gather accurate ammonia emissions data across a wide range of vehicles and real-world driving conditions
• +2 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature7 records

Partnerships

13 partnerships are on record, tiered core and minor.

• ITM Instruments Inc.coreChannel Partner/ Reseller/ Distributor · 1 August 2025Official distributor of SEMTECH HI-FLOW 2 in Canada since August 2025, expanding North American distribution network.
• Heath Consultants Incorporated (Bar Hole Sampler)coreStrategic or Co-development Partner · 7 May 2025Expanded partnership to release groundbreaking Bar Hole quantification technology for utilities industry. Developed through strategic collaboration between Heath Consultants and Sensors.
• Robert Bosch GmbHcoreOEM/ Whitelabel/ Licensing Partner · 6 October 2022Exclusive supplier agreement for BEA 090 Particle Number Analyzer to Robert Bosch for European Periodic Technical Inspection (PTI) programs.
• MAHLE GmbHcoreOEM/ Whitelabel/ Licensing Partner · 6 October 2022Exclusive supplier agreement for Automotive Particle Bench (APB) to MAHLE for European PTI programs.
• Shenzhen Anche Technologies Co., Ltd.coreChannel Partner/ Reseller/ Distributor · 6 January 2022Official distributor of SEMTECH products in People's Republic of China since January 2022. Previously collaborated on Motor Vehicle Inspection market products.
• Heath Consultants IncorporatedcoreChannel Partner/ Reseller/ DistributorPrimary US distributor for SEMTECH HI-FLOW 2 methane emission analyzers. Long-standing partnership for methane emissions management solutions. Developed Bar Hole Sampler technology in collaboration with Sensors.
• Panatech Asia Pvt. Ltd.coreChannel Partner/ Reseller/ DistributorDistributor for SEMTECH products in India (Pune, Maharashtra) serving BS 6 regulatory market.
• JASTEC Co., Ltd.coreChannel Partner/ Reseller/ DistributorDistributor for SEMTECH products in Korea.
• Mustang DynamometerminorStrategic or Co-development PartnerStrategic partner that includes SEMTECH EOL in their product portfolio for dynamometer testing applications.
• The Tuning SchoolminorStrategic or Co-development PartnerStrategic partner that includes SEMTECH EOL in their tuning school curriculum and offerings.
• Emissions AnalyticscoreStrategic or Co-development PartnerOfficial test services partner in UK. Provides bespoke projects, contract test services, and data subscriptions using Sensors PEMS equipment. Conducts REAL MPG testing and EQUA index ratings.
• Well Done FoundationminorStrategic or Co-development PartnerNonprofit using Bar Hole Sampler technology for methane leak detection in orphaned oil and gas wells. Founded 2019 by former oil executive Curtis Shuck.
• Montrose Environmental GroupcoreChannel Partner/ Reseller/ DistributorChannel partner providing methane measurement solutions, OGMP 2.0 compliance consulting, and technical blog content on emissions measurement.

Scale indicators5 records

Recent moves11 records

Expansion highlights6 records

Emerging players

• Aeroqual: Specialist in air quality and gas monitoring sensors; competes in environmental gas analysis segments where Sensors offers AGM, AGM 22, and Gasmitter products.
• Cambustion: UK-based specialist in fast-response gas analyzers and aerosol instrumentation for engine and vehicle emissions research — competes in the PEMS-adjacent gaseous and particulate measurement niche.

Broad incumbents

• Testo SE & Co. KGaA: Broad-line measurement instrument maker with combustion and emissions analyzers used in industrial and HVAC settings; competes with Sensors' AMBII and environmental gas analysis products in adjacent applications.
• SICK AG: Large industrial sensor and gas analyzer manufacturer supplying process, environmental, and emissions gas measurement solutions. Overlaps with Sensors' environmental gas analysis (AGM, Gasmitter) and industrial emissions work.
• Dragerwerk: Industrial and safety gas detection manufacturer with measurement technologies applicable to environmental emissions, fugitive gas detection, and worker exposure monitoring — adjacent competitor in gas analyzer markets.

Direct peers

• TSI Incorporated: Manufacturer of particle measurement instruments (including condensation particle counters used in vehicle PN measurement) and aerosol research equipment — direct overlap with Sensors' CPN particle number product line.
• AVL: Global developer of powertrain and vehicle emissions development and testing tools, including PEMS-compatible measurement systems used by OEMs to demonstrate compliance with EPA, EU, and other emissions regulations.
• Horiba: Major diversified provider of automotive emissions measurement systems, particle counters, and PEMS via its HORIBA Automotive Test Systems business. Head-to-head competitor in vehicle emissions analyzers and regulatory testing equipment used by OEMs and agencies globally.
• Emissions Analytics: UK-based testing services and data provider (REAL MPG, EQUA Index) using PEMS equipment to deliver vehicle emissions and fuel-economy data — both a strategic partner and a buyer of comparable PEMS hardware and services.

Regional players

• Bacharach (now part of Bacharach & MSA): Combustion and emissions analyzer specialist (now within MSA) focused on commercial and industrial combustion analysis; overlaps with Sensors' AMBII and inspection/maintenance gaseous product line.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/2125316

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries2 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 Sensors