Froment Sigma 50 Dynamometers

Sigma 50 Dynamometers


Unique and innovative design features make the Sigma 50 Dynamometer very simple, safe and easy to use. You have full control over the test with the Sigma Hand-held, with its continuous readout of power, speed, torque and torque backup or torque reserve.

You can complete a test in minutes. The simple but sophisticated design means there's no need to warm up the dynamometer or follow regular calibration procedures. Apart from the input shaft, the rotor of the burden alternator and the cooling fans, there are no moving parts in the whole Sigma 50 Dynamometer. This means that reliability is high, and maintenance costs are minimal.

The Sigma Dynamometer can be supplied in a trailer format with lockable storage space for drive shafts and accessories, ready to run tests at any location with access to a 13amp or 16amp power supply.

Alternatively, it can be supplied as a static unit to set up a professional test cell in your workshop


• PTO (270-1250rpm): Maximum power = 515PS (380kW) at 1000rpm, Torque= 3170Nm at 800rpm
• Direct (480- 2200rpm): Maximum power= 515PS (380kW) at 1800rpm, Torque = 1790Nm at 1400rpm

For full technical data of the SIGMA 50 Dynamometer download our technical data sheet.

Control options

Choose from our robust Hand-held or the sophisicated Dynatest PC software.


Mobile Sigma 50 dynamometer GA drawing
Static Sigma 50 dynamometer GA drawing