
Application-specific OEM temperature sensors, thermocouples and temperature transmitters – from design to series production

Testo Sensor GmbH
LenzkirchNew on Amplifa
OEM specialist for temperature sensors
Testo Sensor GmbH was founded in 2010 as a subsidiary of Testo SE & Co. KGaA and specializes in the development and manufacture of application-specific OEM temperature sensors. As a competence partner and OEM supplier, the company handles projects from specification through design and sample and prototype construction to series production and supply logistics. The semi-automated series production is characterized by high reproducibility, hour-precise traceability and a 100% end-of-line functional test at the start of series production. The required quality and functionality are ensured by means of design and process FMEAs as well as stress tests, life-cycle tests and functional tests in the company's own laboratory. The sensors are used, among other things, in heating and air-conditioning technology, refrigeration, heat meters, mechanical engineering, the plastics industry, household appliances and HoReCa applications. In addition to the OEM business, Testo Sensor operates an online shop with a configurator for over 1,000 temperature sensors, thermocouples and temperature transmitters. The site with development and production is Lenzkirch in the Black Forest.
- Site
- Lenzkirch
- Processes
- OEM temperature sensor production (semi-automated, series production), Sample, prototype and field-test sensor construction (handcrafting and pre-series tools), Specification and design of temperature sensors (application-specific), Qualification: stress tests, life-cycle tests and functional tests in the company's own laboratory;, 100% end-of-line functional testing at start of series production, Specification / requirements analysis, Design of application-specific temperature sensors, Sample and prototype construction
- Materials
- Specification and design, Sample and prototype construction, Series production, Design and process FMEA, Qualification
- Certificates
- Design and process FMEA, 100% end-of-line functional testing at start of series production, Hour-precise traceability in production, Own qualification laboratory
- Founded
- 2010
- Industries
- Heating & air conditioning, Refrigeration technology, Mechanical and plant engineering, Energy / heat meters, Plastics industry, HoReCa (hotels, restaurants, catering)
- 01
Specification / requirements analysis
- 02
Design
- 03
Sample and prototype construction
- 04
Qualification (stress tests, life-cycle tests, functional tests)
- 05
Series production with 100% end-of-line functional testing
- 06
Supply logistics (Kanban, consignment warehouse, EDI)
Manufacturing processes and services
Specification and design
Application-specific design and development of temperature sensors according to customer specifications.
Sample and prototype construction
Production of sample sensors, prototypes and field-test sensors by handcrafting and with pre-series tools.
Series production
Cost-efficient semi-automated production with high reproducibility and 100% end-of-line functional testing.
Design and process FMEA
Ensuring the quality and functionality of the sensor designs.
Qualification
Stress tests, life-cycle tests and functional tests in the company's own laboratory and partner network.
Location

Lenzkirch
DEHeadquarters, development and production
- Lot size
- Prototypes to series production
- Materials
- Temperature sensors, thermocouples, temperature transmitters
- Semi-automated production lines
- Own qualification laboratory
- Pre-series tools
Temperature sensor portfolio








Inside the production

Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| OEM temperature sensor production (semi-automated, series production)Assembly | – | – | – | Series production | – |
| Sample, prototype and field-test sensor construction (handcrafting and pre-series tools)Assembly | – | – | – | – | – |
| Specification and design of temperature sensors (application-specific)Engineering | – | – | – | – | – |
| Qualification: stress tests, life-cycle tests and functional tests in the company's own laboratory;Testing | – | – | – | – | – |
| 100% end-of-line functional testing at start of series productionTesting | – | – | – | – | – |
Additional services
Quality assurance
Testo Sensor operates an effective QM system for zero-defect quality with a field failure rate of less than 400 ppm. Qualification takes place in the company's own laboratory through stress tests, life-cycle tests and functional tests, backed up by design and process FMEAs.
| Evidence | Lenzkirch |
|---|---|
| Design and process FMEA | |
| 100% end-of-line functional testing at start of series production | |
| Hour-precise traceability in production | |
| Own qualification laboratory |
History
- 2010
Spin-off of Testo Sensor GmbH as a subsidiary of Testo SE & Co. KGaA (according to Wikipedia founded in January 2011)
- 2011
Founding of Testo Sensor GmbH (according to Wikipedia, January 2011); development, production and sales of temperature sensors, among others for heating and solar systems, automotive air conditioning and coffee machines