
Development and manufacture of vibration condition monitoring systems for helicopters and rotating machinery
Beran Instruments Ltd / Helitune Ltd (CMTG)
Torrington (Devon) · Fareham · Mildenhall · Gilching · OSNY · Vizzola Ticino · Wood Dale, ILNew on Amplifa
About Beran Instruments and Helitune
Beran Instruments Ltd and Helitune Ltd are part of the Condition Monitoring Technology Group (CMTG) headquartered in Torrington, Devon (UK). Since 1980, Helitune has specialised in Rotor Track and Balance systems (Rotortuner RT-6) as well as vibration and health monitoring systems (HUMS) for helicopters, turboprop aircraft and engines; more than 1,000 Rotortuner systems are in service worldwide. Beran, founded in 1984, develops and manufactures online vibration monitoring and machinery protection systems (PlantProtech™) for the power generation industry, in particular for steam, gas and water turbines, including API670-compliant protection functions. The portfolio also includes transducer calibration systems (TransCal) to ISO 16063-21, as well as calibration, repair and training services at locations in the UK, USA, France and Germany. Customer industries include aerospace, power generation (including nuclear), defence, automotive and manufacturing; customers include EDF, NASA and SSE Thermal, among others.
- Site
- EX38 7HP Torrington, Devon
- Processes
- Rotor Track and Balance (RTB) systems – design and manufacture, Vibration monitoring / health monitoring (HUMS) for helicopters, turboprops and engines, Online vibration monitoring / machinery protection systems (API670-compliant) for rotating, Vibration transducer calibration (5 Hz to 5 kHz, UKAS-traceable, to ISO 16063-21), Calibration, repair and maintenance services for RTB and vibration monitoring systems, Electronics design, software development, manufacturing, repair, calibration (group capabilities), Rotor Track and Balance systems (RT-6, Rotortuner), Vibration and HUMS sensor technology as well as health monitoring for helicopters, turboprops and
- Materials
- Rotortuner RT-6 Rotor Track and Balance System, PlantProtech™ 7600 PCMS, PlantProtech™ 766 Analyser, PlantProtech™ 768 Analyser, PlantProtech™ 767 Portable Analyser, Transducer Calibration System, Accelerometers (DJB Instruments)
- Certificates
- EN9100:2018 / ISO 9001:2015 (equivalent to AS9100D), ISO 45001:2018, ISO 9001:2015 / AS9100 Rev D (quality management, also ZV A1-1525/0-8901 and, ISO 9001:2015, EN 9100:2018 (AS9100D)
- Industries
- Aerospace, Power generation industry (nuclear, gas, steam, hydro, CCGT), Defence, Automotive, Manufacturing industry, Energy sector
- 01
Electronics design and software development
- 02
Manufacture of monitoring and calibration systems
- 03
System installation and commissioning
- 04
Calibration and repair (return-to-factory or on-site)
- 05
Training and technical support
Products and Systems
Rotortuner RT-6 Rotor Track and Balance System
Multi-channel data acquisition system for Rotor Track and Balance on helicopters.
PlantProtech™ 7600 PCMS
API670-compliant automated vibration trip system with integrated condition monitoring.
PlantProtech™ 766 Analyser
Parallel data acquisition for up to 64 vibration sensors, recommended for gas and steam turbines.
PlantProtech™ 768 Analyser
Flexible data acquisition with 4 × 8 sensors for small turbines, fans and feed pumps.
PlantProtech™ 767 Portable Analyser
Portable 32-channel vibration analyser for mobile diagnostics.
Transducer Calibration System
Calibration system for vibration sensors to ISO 16063-21.
Accelerometers (DJB Instruments)
Vibration sensors and accessories, manufactured in Mildenhall, UK.
Locations

Torrington, Devon
GBCMTG Group Head Office; Beran/Helitune development and manufacturing, calibration
- Materials
- Condition monitoring and calibration systems; RTB systems
- Rotortuner RT-6 manufacturing
- PlantProtech 7600 PCMS
- PlantProtech 767/766/768 Analyser
- TransCal
Fareham
GBProsig – NVH systems
Mildenhall
GBDJB Instruments – manufacture of accelerometer/vibration sensors
Gilching
DECMTG GmbH – sales, calibration, repair and service
OSNY
FRSemia/CMTG France – sales, calibration, repair
Vizzola Ticino
ITHelitune subsidiary – sales and support
Wood Dale, IL
USCMTG USA – sales, calibration, repair
Systems and Equipment




Inside the production







Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Rotor Track and Balance (RTB) systems – design and manufactureTesting | – | – | – | – | – |
| Vibration monitoring / health monitoring (HUMS) for helicopters, turboprops and enginesTesting | – | – | – | – | – |
| Online vibration monitoring / machinery protection systems (API670-compliant) for rotatingTesting | – | – | – | – | – |
| Vibration transducer calibration (5 Hz to 5 kHz, UKAS-traceable, to ISO 16063-21)Testing | – | – | – | – | – |
| Calibration, repair and maintenance services for RTB and vibration monitoring systemsTesting | – | – | – | – | – |
| Electronics design, software development, manufacturing, repair, calibration (group capabilities)Engineering | – | – | – | – | – |
9 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Rotortuner RT-6 Rotor Track and Balance System | Helitune RT-6 | – | – | – | Torrington, Devon, UK |
| Portable 32-channel vibration analyser | Beran PlantProtech 767 Portable Analyser | – | – | – | Torrington, Devon, UK |
| Automated vibration trip system (API670 compliant machinery protection) | Beran PlantProtech 7600 PCMS | – | – | – | Torrington, Devon, UK |
| Parallel data acquisition analyser (up to 64 vibration sensors) | Beran PlantProtech 766 Analyser | – | – | – | – |
| Flexible data acquisition analyser (4 x 8 vibration sensors) | Beran PlantProtech 768 Analyser | – | – | – | – |
| Advanced Plant Monitor | Beran PlantProtech 720 | – | – | – | – |
| High-speed mobile data acquisition system for critical rotating machinery | Beran PlantProtech PROTOR Mobile | – | – | – | – |
| Transducer Calibration System (ISO 16063-21) | Beran TransCal | – | – | – | – |
| Accelerometer / vibration sensor manufacturing | DJB Instruments | – | – | – | Mildenhall, UK |
Additional services
Reference customers
Quality and Certifications
The quality management system is certified to ISO 9001:2015 and EN9100:2018 (equivalent to AS9100D) and covers design, manufacture, repair and maintenance of the systems. In addition, there is an ISO 45001:2018 certification for occupational health and safety; calibration results are UKAS-traceable.
| Evidence | Torrington, Devon |
|---|---|
| ISO 9001:2015 | |
| EN 9100:2018 (AS9100D) | |
| ISO 45001:2018 |
History
- 1980
Helitune founded as a specialist in helicopter vibration monitoring.
- 1984
Beran founded in Devon with a focus on signal processing and custom instrumentation.
- 1989
Beran finalist in the Prince of Wales Award for Innovation and Production with a railway sleeper integrity tester for British Railways.
- 1991
Beran relocated to a purpose-built facility in Torrington, North Devon.
- 1992
Strategic focus on Online Vibration Monitoring Systems (OVMS).
- 2000
Beran acquires Helitune; both companies consolidated at the expanded Torrington site.
- 2005
Launch of the PlantProtech™ 767 Portable Analyser.
- 2022
Initial ISO 45001 certification for Beran Instruments Ltd / Helitune Ltd (08.03.2022).
- 2024
CMTG wins the NDMA Manufacturer of the Year Award for the second consecutive time (with the University of Bristol).
- 2025
Golden KTP Awards: national innovation award for rotor technology with the University of Bristol.