Froment Sigma 680 Dynamometers

Sigma 680 Dynamometers


The Sigma 680 Dynamometer stands out with its distinctive and inventive design features, ensuring simplicity, safety, and ease of use. Take command of your tests effortlessly with the Sigma Hand-held, providing continuous readouts of power, speed, torque, and torque backup or reserve.

Conducting tests is a swift process, typically completed within minutes. Thanks to its uncomplicated yet refined design, there's no need for dynamometer warm-up or adherence to regular calibration procedures. With the exception of the input shaft, rotor of the burden alternator, and cooling fans, the Sigma 680 Dynamometer boasts a lack of moving parts, ensuring heightened reliability and minimal maintenance costs.

Choose the Sigma Dynamometer in a trailer format, equipped with lockable storage for drive shafts and accessories, making it ready for tests at any location with access to a 13amp or 16amp power supply. Alternatively, opt for the static unit configuration to establish a professional test cell in your workshop.


• PTO (270-1250rpm): Maximum power = 680PS (500kW) at 1000rpm, Torque= 4150Nm at 800rpm
• Direct (480- 2200rpm): Maximum power= 680PS (500kW) at 1800rpm, Torque = 2340Nm at 1400rpm

For full technical data of the SIGMA 60 Dynamometer download our technical data sheet.

Control options

Choose from our robust intelligent hand-held terminal or the sophisicated Dynatest PC software.


Mobile and Static Sigma 680 dynamometer GA drawing