TELEMAC SAS
TELEMAC SAS, founded in 1947 in France, designs and manufactures geotechnical and structural instrumentation — vibrating wire, fiber optic, and MEMS sensors — for monitoring dams, tunnels, bridges, nuclear plants, mining, and LNG infrastructure globally.
- Company typePrivate
- Founded1947
- HeadquartersGretz-Armanvilliers, France, France
- Headcount1–10
- GTM typeB2B
- OfferingHardware or Manufacturing
What TELEMAC SAS does
TELEMAC SAS is a French geotechnical and structural instrumentation company founded in 1947 in Gretz-Armainvilliers, France, and operated as a subsidiary of the Canadian-headquartered Roctest Ltd. group alongside sister companies Smartec SA (Switzerland) and Enomfra (France). The company designs and manufactures sensors and data acquisition systems for monitoring deformation, strain, temperature, displacement, and other physical parameters in civil engineering infrastructure. Its technology platform spans three product lines: conventional vibrating wire sensors (extensometers, strain gauges, load cells, piezometers), fiber optic sensing systems (SOFO interferometric sensors, DiTeSt distributed strain, DiTemp distributed temperature), and MEMS-based inclinometers (GEOSTRING, PROFIL-H), supplemented by wireless dataloggers (RT-VLOG, LSVW5) and a software suite for data acquisition and visualization. Its go-to-market is enterprise field sales targeting owners and operators of dams, tunnels, bridges, nuclear plants, LNG terminals, mining operations, and high-rise or heritage buildings, with project-based quoting, multi-year contracts, and a global distributor network of 40+ partners. Notable reference projects include the Olkiluoto Nuclear Power Plant (Finland), ITER (France), the Grand Ethiopian Renaissance Dam, the Grand Paris metro, the I-35W St. Anthony Falls Bridge (USA), Dunkerque LNG (France), Anglo American, Rio Tinto, Freeport-McMoRan tailings projects, and CERN-LHC. Differentiators include pioneering status in vibrating wire extensometer technology since 1947, SIL 2-certified fiber optic leak detection, GOST certification for the SOFO line, ISO 9001:2015 group certification, and an installed base covering more than 400 dams in 75 countries.
TELEMAC SAS firmographics
Firmographics- Name
- TELEMAC SAS
- Legal name
- TELEMAC SAS
- Website
- https://telemac.fr
- Company type
- Private
- Founded year
- 1947
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- TELEMAC SAS, founded in 1947 in France, designs and manufactures geotechnical and structural instrumentation — vibrating wire, fiber optic, and MEMS sensors — for monitoring dams, tunnels, bridges, nuclear plants, mining, and LNG infrastructure globally.
- Ownership category
- akta.pro rank
TELEMAC SAS industry classification
Industry- Product category
- Geotechnical and Structural Instrumentation
- NAICS
- Other Measuring and Controlling Device Manufacturing (334519)
- SIC
- Industrial Instruments For Measurement, Display, And Control (3823)
- akta.pro primary industry
- Condition Monitoring & Predictive Maintenance Instrumentation (Vibration/ultrasound, oil analysis sensors, IIoT monitoring) (IMAGAFAG)
- akta.pro secondary industries
- Industrial Sensors (Pressure, Temperature, Flow, Level, Proximity, Vibration) (IMAGAFAA), Industrial-Grade Sensors & Transducer Components (Discrete sensing elements, transducers, MEMS sensors) (IMAGAJAO)
Keywords
Where TELEMAC SAS is headquartered
LocationHeadquarters
- HQ city
- Gretz-Armanvilliers, France
- HQ country
- France
- HQ region
- Europe
Offices2 records
Markets served
TELEMAC SAS business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Supply Chain, Operations, Personnel, Marketing or Sales, Infrastructure
Revenue model
- Instrumentation Hardware Sales: Sale of geotechnical and structural monitoring instruments including vibrating wire sensors, fiber optic sensors, MEMS inclinometers, load cells, extensometers, and data loggers. Products sold as standalone instruments or as integrated monitoring systems for large infrastructure projects.
- Software Products: Sale of software packages including SDB software for SMARTEC monitoring systems, Logger Manager, PROFIL Manager, and various Android applications for data acquisition and visualization. Software includes both free and licensed versions with activation keys.
- Inspection and Maintenance Services: Inspection services for monitoring systems, maintenance contracts, calibration services, and training on installation and data acquisition systems.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom quotation based on project requirements |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels7 records
TELEMAC SAS product offering
Product offeringCore offering
TELEMAC SAS designs, manufactures, and supplies geotechnical and structural health monitoring instrumentation for civil engineering infrastructure. Its core offerings span vibrating wire sensors (strain gauges, load cells, extensometers, piezometers), fiber optic sensors (SOFO long-gage interferometric sensors, DiTeSt distributed strain and DiTemp distributed temperature sensors), MEMS-based in-place inclinometers (GEOSTRING), in-situ and laboratory testing equipment for soil and rock (pressuremeters, dilatometers such as TEXAMe, PROBEXe, DMPe), wired and wireless dataloggers (RT-VLOG, LSVW5, LSGWAY base station), and dedicated software (SDB, PROFIL Manager, PISA-M Manager, LOGGER MANAGER, DP BOX READER) for data acquisition, visualization, and analysis.
Product overview
TELEMAC SAS is a leading supplier of geotechnical and structural instrumentation established in 1947, offering three main product lines: Conventional Sensing (vibrating wire sensors, inclinometers, load cells), Fiber Optic Sensing (SOFO, DiTeSt, DiTemp systems for distributed strain and temperature monitoring), and In-Situ/Laboratory Testing Equipment for soil and rocks (pressuremeters, dilatometers). The portfolio includes sensor products like GEOSTRING MEMS inclinometers, C-110 strain gauges, VH load cells, and fiber optic sensing cables; datalogger solutions including RT-VLOG and LSVW5 wireless loggers with LSGWAY base station; and software packages for data acquisition and management. The company specializes in structural health monitoring for dams, tunnels, bridges, buildings, mining, LNG terminals, nuclear facilities, and cryogenic applications.
Differentiator
Problem solved
Functional benefit
Products and services
- GEOSTRING In Place MEMS Inclinometer String of closely spaced MEMS sensors for real-time, continuous, and unattended monitoring of lateral displacement of soil, rock, and structures. Designed for civil engineering and geotechnical professionals.
- DMPe Borehole Dilatometer Flexible dilatometer equipment for in-situ determination of the deformation modulus of rock masses in 96 mm or 101 mm boreholes. Used by geotechnical engineers for rock mass characterization.
- PROFIL-H Horizontal Digital Inclinometer System
- C-110 Vibrating Wire Strain Gauges
- DiTemp Ordinary Temperature Sensing Cable HDPE
- DiTeSt SMARTape II Strain Sensor
- DiTeSt / DiTemp Hydro & Geo Strain and Temperature Sensing Cable
- VH Vibrating Wire Load Cell
- RT-VLOG Vibrating Wire Datalogger Compact and cost-effective vibrating wire datalogger in 4 or 8-channel configurations for monitoring piezometers, load cells, and extensometers, with non-volatile memory storage.
- LSVW5 5CH VW Wireless Datalogger
- LSGWAY Wireless Base Station
- SOFO Fiber Optic Sensors Long-gage fiber optic interferometric sensors for structural health monitoring, intrinsically safe and immune to electromagnetic interference, GOST certified for Russia and Central Asia.
- DP BOX READER Android Application
- SDB Software Package
- PROFIL Manager Software
- PISA-M MANAGER Software
- LOGGER MANAGER Software
- Distributed Fiber Optic Leak Detection System (SIL 2 Certified) Fiber optic distributed leak detection system with SIL 2 certification for ammonia, LNG, LPG, CO2, ethylene, hydrogen, and oxygen pipelines and storage in hazardous (SEVESO) environments.
Quantifiable outcome
- Monitored more than 400 dams in 75 countries worldwide
- +1 more outcomes
Companies that use TELEMAC SAS
Customer profileNamed customers10 records
Segments9 records
Ideal customer profiles6 records
TELEMAC SAS technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
TELEMAC SAS partnerships and signals
Strategic signalPartnerships
Twelve partnerships are on record, tiered core and major.
- Roctest Ltd.coreParent company of TELEMAC SAS. Roctest Ltd. is the data controller for personal data processing and owns the telemac.fr website. The group includes Roctest, Smartec, TELEMAC, Enomfra, and FISO brands under unified management.
- Smartec SA (Switzerland)coreSister company providing innovative Fiber Optic Solutions for Structural Health Monitoring and Geotechnical Instrumentation. Located in Manno, Switzerland. Products are marketed together with TELEMAC instrumentation.
- Enomfra (France)coreSister company providing Hydrogeological & Geotechnical Services including investigations, monitoring, and testing. Based in France. Offers field services complementing TELEMAC instrumentation products.
- GeoMediciones/C.Fahrenkrog y Cía. Ltda. (Chile)majorDistributor for Chile market. Contact: Mr. Arturo Fahrenkrog, Av. Blanca Estela 1086, Bosques de Montemar, Concón, Chile. Specializes in geotechnical instrumentation distribution.
- SPL Consultants Limited (Canada)majorDistributor for Canada. Located at 6221 Highway 7 West, Unit 16, Vaughan, ON L4H 0K8. Provides geotechnical instrumentation products and support.
- SOFOTEC Singapore Pte LtdmajorDistributor for Singapore market. Located at 61 Kaki Bukit Avenue 1, #03-27 Shun Li Complex, Singapore 417943. Contact: Mr. Lionel Chia.
- Sphere (Russia)majorRussian partner instrumental in obtaining GOST certification for SOFO Fiber Optic sensors. Worked on business development in Russian and Central Asian markets for structural health monitoring technology.
- Environmental Systems and Services (Australia)majorDistributor for Australia. Located at 141 Palmer Street, Richmond, Victoria 3121. Contact: Mr Chris Coseski.
- Earth Products China Ltd (Hong Kong)majorDistributor for China/Hong Kong market. Room 1205-6 Seapower Centre, 73-77 Lei Muk Road, Kwai Chung, Hong Kong. Contact: Mr Frank Ko.
- MESUREX S.L. (Spain)majorDistributor for Spain. Parque Tecnológico Andalucia, C/ María Curie 4-D 10, 29590 Málaga, Spain. Contact: Mr Antonio D. Soler Heredia.
- All-Star Technology Corporation (Taiwan)majorDistributor for Taiwan. Located at 1F, No. 36, Lane 312, Section 2, ChengGong Road, Taipei City 11467. Contact: Mr. Huang Long-Lih.
- United Group (Egypt)majorGeotechnical works integrator for instrumentation and hydraulic works. Have worked with TELEMAC since 2015. Exhibiting together at ICSGASE'26 conference in Egypt.
Scale indicators3 records
Recent moves6 records
Expansion highlights5 records
TELEMAC SAS competitors and assessment
Company assessmentDirect peers
- RST Instruments Ltd. Canadian manufacturer of geotechnical and structural monitoring instruments, including inclinometers, extensometers, and data loggers. Direct competitor across civil engineering and mining applications, with parallel focus on vibrating wire and MEMS technologies.
- Measurand Inc. Canadian manufacturer of ShapeArray — a MEMS-based inclinometer for deformation monitoring of soil, rock, and structures. Direct peer in the MEMS inclinometer category, competing against TELEMAC's GEOSTRING product.
- Soil Instruments Ltd: UK-based manufacturer and supplier of geotechnical and structural monitoring equipment. Direct competitor in vibrating wire sensors, inclinometers, and load cells for civil engineering projects, with a similarly long heritage in the niche.
- Sisgeo S.r.l. Italian manufacturer of geotechnical, structural, and environmental monitoring instruments. Direct competitor in inclinometers, extensometers, load cells, and piezometers, serving the same infrastructure and mining customer segments.
- Geokon Inc. US-based manufacturer of vibrating wire and MEMS geotechnical/structural instrumentation. Closest direct competitor to TELEMAC, with overlapping product portfolio (strain gauges, load cells, inclinometers, piezometers) and shared customer base in dams, tunnels, and mining.
- Geosense Ltd: UK-based supplier of geotechnical and structural monitoring instruments. Direct peer across inclinometers, piezometers, extensometers, and data loggers, serving overlapping infrastructure, tunneling, and mining customers.
- Encardio Rite Geotechnical Instruments: Indian manufacturer of geotechnical and structural health monitoring instruments. Direct competitor in vibrating wire sensors, inclinometers, and extensometers for dams, tunnels, bridges, and high-rise buildings across emerging and developed markets.
Others
- Smartec SA: Sister company under the Roctest group providing fiber optic sensing solutions for structural health monitoring. Affiliated rather than competitive; included to highlight the corporate group structure that shapes TELEMAC's market positioning.
Broad incumbents
- Keller Group plc: UK-based ground engineering and geotechnical services group that consumes and supplies monitoring instrumentation. A broader incumbent in the geotechnical value chain, indirectly comparable as both customer and competitor to instrumentation-only players.
- Campbell Scientific: US-based manufacturer of data acquisition systems, dataloggers, and environmental/geotechnical monitoring solutions. A broader incumbent that overlaps in datalogger hardware and structural monitoring platforms, though not a direct vibrating-wire sensor competitor.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
TELEMAC SAS social profiles
Digital presenceTELEMAC SAS compliance and trust
Trust signalCompliance3 records
TELEMAC SAS financial estimates
Financial estimateRevenue estimate
Valuation estimate
TELEMAC SAS leadership team
Management profileNumber of profiles
Profiles1 record
TELEMAC SAS subsidiaries and ownership
Company hierarchySubsidiaries3 records
TELEMAC SAS funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
TELEMAC SAS 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 TELEMAC SAS
What does TELEMAC SAS do?
TELEMAC SAS designs, manufactures, and supplies geotechnical and structural health monitoring instrumentation for civil engineering infrastructure. Its core offerings span vibrating wire sensors (strain gauges, load cells, extensometers, piezometers), fiber optic sensors (SOFO long-gage interferometric sensors, DiTeSt distributed strain and DiTemp distributed temperature sensors), MEMS-based in-place inclinometers (GEOSTRING), in-situ and laboratory testing equipment for soil and rock (pressuremeters, dilatometers such as TEXAMe, PROBEXe, DMPe), wired and wireless dataloggers (RT-VLOG, LSVW5, LSGWAY base station), and dedicated software (SDB, PROFIL Manager, PISA-M Manager, LOGGER MANAGER, DP BOX READER) for data acquisition, visualization, and analysis.
Is TELEMAC SAS a public or private company?
TELEMAC SAS is a private company. It is classified as corporate owned and is currently operating.
When was TELEMAC SAS founded?
TELEMAC SAS was founded in 1947. It employs 1 to 10 people.
Where is TELEMAC SAS based?
TELEMAC SAS is headquartered in Gretz-Armanvilliers, France, France, in the Europe region.
How does TELEMAC SAS make money?
Three revenue lines are on record. Instrumentation Hardware Sales are the primary driver. The others are software Products and inspection and Maintenance Services.
Who are TELEMAC SAS's main competitors?
Direct peers on record are RST Instruments Ltd., Measurand Inc., Soil Instruments Ltd, Sisgeo S.r.l., Geokon Inc., Geosense Ltd and Encardio Rite Geotechnical Instruments. Smartec SA is listed as an others. Broad incumbents are Keller Group plc and Campbell Scientific.
Does TELEMAC SAS have an API?
No public API is recorded for TELEMAC SAS.
What industry is TELEMAC SAS in?
TELEMAC SAS's product category is Geotechnical and Structural Instrumentation. Its primary akta.pro industry code is IMAGAFAG, Condition Monitoring & Predictive Maintenance Instrumentation (Vibration/ultrasound, oil analysis sensors, IIoT monitoring), with a secondary code of IMAGAFAA, Industrial Sensors (Pressure, Temperature, Flow, Level, Proximity, Vibration). Its NAICS code is 334519 and its SIC code is 3823.