Manufacturer of custom force sensors, pressure transducers and overload systems with in-house calibration up to 10 MN.
BROSA GmbH
Tettnang (DE) · Rüthi SG (CH) · Oss (NL) · Singapore (SG) · Nanjing (CN)New on Amplifa
About BROSA
BROSA GmbH, headquartered in Tettnang on Lake Constance, has been developing and manufacturing force sensors, pressure transducers and systems for load and pressure measurement for safety-critical applications since 1935. The product range includes force measuring pins, force measuring shackles, force measuring rings, load cells, support force and bearing force transducers, angle sensors as well as weighing and overload electronics. The sensors are made of stainless steel and fine-grained steel and are custom-adapted to the respective installation situation using strain gauge technology or MEMS design concepts. With an in-house manufacturing depth of over 95 percent, machining is carried out on modern machining centers, and calibration up to a measuring range of 10 MN is performed on in-house calibration presses. The electronic components are developed and produced by the subsidiary BROSAtronic AG in Rüthi, Switzerland. Customer industries include offshore and marine, construction, container handling, crane technology and mechanical engineering. The medium-sized family business employs well over 100 people and has sales offices in the Netherlands, Singapore and China.
- Site
- Tettnang
- Processes
- Machining (machining centers), Sensor manufacturing / assembly of force sensors and pressure transducers (custom), Calibration of sensors up to 10 MN on in-house calibration presses, Electronics manufacturing (PCB assembly, electronic amplifiers and modules), Development and design of custom sensors and systems, Development and design, Custom sensor solutions, In-house calibration up to 10 MN
- Materials
- Stainless steel, High-strength stainless steel, Fine-grained steel, Steel, Machining on machining centers, Strain gauge technology, MEMS measurement technology, Calibration up to 10 MN
- Certificates
- ISO 9001:2015, ISO 14001:2015, DIN EN IEC 80079-34, ATEX quality assurance system, OIML R60/2000-SE1-17.01 (force measuring ring), IECEx BVS 15.0021 (load cell 0113), IECEx BVS 14.0110X (load pin 0203), ISO 9001, ISO 14001, ATEX / IECEx (Ex production), OIML R60
- Founded
- 1935
- Employees
- well over 100
- Industries
- Offshore and marine, Construction industry, Container handling, Mechanical engineering, Crane technology, Testing and weighing technology
- 01
Technical consulting and requirements capture
- 02
Development and design of the custom sensor
- 03
Machining on machining centers
- 04
Electronics manufacturing and assembly at BROSAtronic AG
- 05
Sensor assembly
- 06
Calibration up to 10 MN in a simulated installation situation
- 07
Documentation, on-site commissioning and sales via branch offices
Materials and Processes
Stainless steel
High-quality stainless steel for force measuring pins, load cells and pressure transducers with robust welded construction.
Fine-grained steel
Material for force measuring shackles with measuring ranges up to 8,000 kN, manufactured without welding.
Steel
Material for force measuring pins in cylindrical housing design.
Machining on machining centers
Regularly invested, modern machining centers ensure the high in-house manufacturing depth.
Strain gauge technology
Proven strain gauge technology with sophisticated amplifiers for precise measurement results under the most demanding environmental conditions.
MEMS measurement technology
Integrated angle measurement based on MEMS for calculating boom load in slewing crane booms.
Calibration up to 10 MN
In-house calibration presses set up sensors with large measuring ranges in a simulated installation situation.
Sites
Tettnang
DEHeadquarters, administration, production, development
- Materials
- Stainless steel, fine-grained steel, steel
- Machining centers
- Calibration presses (up to 10 MN)
Rüthi SG
CHSubsidiary BROSAtronic AG: electronics, development, production
- Electronics manufacturing (PCB assembly, amplifiers, modules)
Oss
NLSales office BROSA B.V. (offshore market)
Singapore
SGSales office BROSA Pte Ltd (Asian market)
Nanjing
CNSales office BROSA (Nanjing) Co., Ltd.
Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Machining (machining centers)Machining | – | – | – | – | Stainless steel, Fine-grained steel |
| Sensor manufacturing / assembly of force sensors and pressure transducers (custom)Assembly | – | – | – | – | Stainless steel, Fine-grained steel |
| Calibration of sensors up to 10 MN on in-house calibration pressesTesting | – | – | – | – | – |
| Electronics manufacturing (PCB assembly, electronic amplifiers and modules)Assembly | – | – | – | – | – |
| Development and design of custom sensors and systemsEngineering | – | – | – | – | – |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Machining center | – | – | – | – | Tettnang, Germany |
| Calibration press (sensors up to 10 MN) | – | – | – | – | Tettnang, Germany |
Additional services
Quality and Certification
The entire value chain is audited by independent audits according to ISO 9001 and ISO 14001; every sensor is calibrated in a simulated installation situation, including a test report. ATEX and IECEx certifications according to DIN EN IEC 80079-34 are held for the Ex area.
| Evidence | Tettnang | Rüthi SG |
|---|---|---|
| ISO 9001 | ||
| ISO 14001 | ||
| ATEX / IECEx (Ex production) | ||
| OIML R60 |
History
- 1935
Erich Brosa starts developing and producing electrical measuring transducers in Berlin
- 1956
Relocation of the company to Tettnang/Lake Constance
- 1974
Dr. Bernd Brosa expands the business field by acquiring an electronics company in Rüthi/Switzerland
- 2000
The company with 32 employees is acquired by two family entrepreneurs
- 2003
New production site with 2,500 sqm; modernization of the Swiss site
- 2004
Founding of the sales companies in Singapore and the Netherlands
- 2007
Acquisition of a 17,000 sqm site in Tettnang-Bürgermoos
- 2008
Occupancy of the new administration and production building with 6,000 sqm
- 2018
Founding of BROSA (Nanjing) Co., Ltd. in China
- 2021
Acquisition of Rüthi Electronic AG; the group grows to well over 100 employees; IBR Industriebeteiligungen becomes sole shareholder
- 2022
Change of legal form to BROSA GmbH; Rüthi Electronic AG becomes BROSAtronic AG
- 2025
Markus Weber joins the management board as of 01.01.2025