Duro-sense

What Duro-sense does

Duro-Sense is a U.S.-based manufacturer of precision temperature measurement sensors and accessories, founded in Carson, California in 1979/1980 and operating as a private company until its October 2025 acquisition by Industrial Control Solutions (ICS), a portfolio company of LDR Partners LP. The company's core product lines are thermocouples (including mineral-insulated 'Sheath-Pak' constructions, industrial, high-temperature, plastics-industry, and engine/compressor variants across types J, K, T, E, N, R, S, B, and C) and resistance temperature detectors (Pt100/Pt1000 RTDs), supported by a full accessory catalog of insulated wire, extension wire, connectors, thermowells, connection heads, head-mount transmitters (4-20 mA, HART, Fieldbus), protection tubes, fittings, insulators, and terminal blocks. A differentiated capability is its in-house ISO/IEC 17025:2017 accredited calibration laboratory, which provides N.I.S.T. traceable calibration and certification for thermocouples, RTDs, and thermocouple wire across a -109°F to 2000°F range.

Duro-Sense sells to industrial manufacturing, aerospace & defense, power generation, and OEM customers, with the first two verticals marked as primary. Quality systems are aligned with ISO-9001, AS-9100, MIL-I-45208, MIL-STD-45662A, ISO 10012:2003, ASTM Z-540-2006, AMS2750E, and several ASTM and ANSI inspection standards, consolidated under the company's internal DSQ-2000 quality standard. The aerospace and defense exposure is the principal source of regulatory moat: AS-9100 and MIL-spec compliance are prerequisites for many defense and aviation programs, and the company explicitly markets solutions for aviation, spacecraft, military aircraft, chemical processing, petroleum refining, plastics processing, medical/research, and power generation applications. GTM is sales-led and direct: a quote-based model with a $25 minimum order, Net 30 payment terms (1.5% monthly service charge on past-due balances), and a 30-day warranty claim window, supported by an informational blog, social channels, and a Request a Quote workflow on duro-sense.com.

Revenue is generated through two streams: hardware sales (sensors, wire, accessories) and professional services (ISO/IEC 17025 accredited calibration). Pricing is opaque (no public price list), reflecting the custom/quote-driven nature of B2B industrial sensor sales and OEM specifications. Following the ICS acquisition, Duro-Sense operates as a brand within a multi-brand instrumentation platform (alongside Thomas Products, Whitman Controls, and Load Controls) intended to offer integrated temperature, pressure, level, flow, and power sensing. Headcount is reported in the 11–50 range, and financial figures (revenue, margins, deal volume) are not publicly disclosed.

Name

Duro-sense

Legal name

Duro-Sense LLC

Website

https://duro-sense.com

Company type

Private

Founded year

1980

Operating status

Acquired

Headcount range

11–50 employees

Short description

Duro-Sense manufactures precision thermocouples, RTDs, and temperature-sensor accessories for industrial, aerospace & defense, power generation, and OEM customers. The Carson, California firm runs an ISO/IEC 17025:2017 accredited calibration lab and was acquired by Industrial Control Solutions in October 2025.

Ownership category

akta.pro rank

Product category

Industrial Temperature Sensors

NAICS

Other Measuring and Controlling Device Manufacturing (334519)

SIC

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

akta.pro primary industry

Thermistors & Temperature Sensors (NTC/PTC/RTD Elements) (HDAHANAH)

akta.pro secondary industry

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

Keywords

• Industrial temperature sensors
• Thermocouples
• Resistance temperature detectors
• Calibration services
• Sensor accessories

Headquarters

HQ city

Carson

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Temperature Sensor Hardware Sales: Duro-Sense generates revenue through the manufacture and sale of temperature sensors including thermocouples, RTDs, thermowells, and accessories. Products are sold directly to industrial customers with quote-based pricing and Net 30 payment terms.
2. Calibration Services: ISO/IEC 17025 accredited calibration services for thermocouples, RTDs, and thermocouple wire with N.I.S.T. traceable certification. Lead time dependent on quantity and laboratory capacity.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Duro-Sense manufactures precision temperature measurement sensors including thermocouples (J, K, T, E, N, R, S, B, and C types) and resistance temperature detectors (RTDs/Pt100/Pt1000), along with supporting accessories such as wire, connectors, thermowells, and transmitters. The company also operates an ISO/IEC 17025:2017 Accredited Calibration Laboratory offering N.I.S.T. traceable calibration and certification, plus custom design and fabrication services for unique temperature sensing applications.

Product overview

Duro-Sense Corporation is a manufacturer of high-quality precision temperature sensors serving industrial, aerospace, power generation, and process industries. The product portfolio centers on two core sensor technologies: thermocouples (including mineral insulated 'Sheath-Pak', industrial, high-temperature, plastics industry, and engine compressor variants) and RTDs/Resistance Temperature Detectors (Pt100/Pt1000). These core products are supported by a comprehensive range of accessories including thermocouple/RTD wire, connectors, thermowells, connection heads, transmitters (4-20 mA, HART, Fieldbus), protection tubes, fittings, insulators, and terminal blocks. The company also provides value-added services including ISO/IEC 17025 accredited calibration, N.I.S.T. traceable certification, and custom sensor fabrication and design assistance. Following acquisition by Industrial Control Solutions in October 2025, the product line complements ICS's broader portfolio of pressure, level, flow, and power sensing products.

Differentiator

Problem solved

Functional benefit

Products and services

• Mineral Insulated 'Sheath-Pak' Thermocouples

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators2 records

Recent moves4 records

Expansion highlights5 records

Direct peers

• Watlow: Watlow is one of the largest dedicated manufacturers of industrial temperature sensors, heaters, and controllers, serving the same aerospace, defense, and process-industrial customers as Duro-Sense with a broader portfolio and global footprint.
• Omega Engineering: Omega Engineering (part of Spectris) manufactures and distributes a comprehensive catalog of thermocouples, RTDs, and temperature instrumentation, directly overlapping with Duro-Sense's core product lines and industrial/OEM customer base.
• Pyromation: Pyromation is a US-based manufacturer of thermocouples, RTDs, and thermowells serving industrial process, aerospace, and OEM markets, making it a closely comparable direct competitor in mid-market temperature sensor manufacturing.
• Thermo Electric: Thermo Electric manufactures temperature sensors, thermocouple wire, and assemblies for industrial and process applications, overlapping directly with Duro-Sense's sensor, wire, and accessory portfolio.
• WIKA: WIKA is a global manufacturer of measurement instrumentation including temperature sensors and thermowells for industrial process, oil & gas, and power generation, competing head-to-head with Duro-Sense in many of the same end markets.

Broad incumbents

• Endress+Hauser: Endress+Hauser is a global process instrumentation incumbent offering temperature, flow, level, and analytical instruments; it competes with Duro-Sense in industrial process temperature measurement but as part of a much broader portfolio.
• Emerson Electric (Rosemount): Emerson's Rosemount line is a leading process temperature and pressure instrumentation franchise, serving the same industrial process and power customers as Duro-Sense but at significantly greater scale and breadth.
• Honeywell Sensing & Productivity Solutions: Honeywell manufactures a broad range of temperature, pressure, and position sensors, including aerospace-grade devices that compete with Duro-Sense in mission-critical aerospace and defense applications.
• Yokogawa Electric: Yokogawa supplies process control and field instrumentation including temperature transmitters and sensors to industrial process and power customers that overlap with Duro-Sense's served markets.
• TE Connectivity: TE Connectivity manufactures sensors, connectors, and wire/cable products that overlap with Duro-Sense's thermocouple wire, connector, and sensor accessory portfolio, particularly in industrial and aerospace applications.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UCKtU2bNSJB02AQVChTZ7UbA
• Facebookfacebook.com/DuroSense
• LinkedInlinkedin.com/company/duro-sense-corp
• Xx.com/DuroSense

Compliance10 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 Duro-sense